https://publicacoes.softaliza.com.br/ise2024 pt-BR International Symposium on Energy: Energy Transition, Green Hydrogen and Sustainable Industry - ISE 2024 https://publicacoes.softaliza.com.br/ise2024/article/view/11159 The rising CO₂ levels and ongoing fossil fuel dependence have spurred research into its catalytic conversion. Projections indicate CO₂ could reach 970 ppm in the next century. While CO₂ has industrial uses, its application in fine chemistry is limited. Recent advances aim to convert CO₂ into valuable products like organic carbonates, improving sustainability by replacing phosgene. Metal-porphyrin catalysts (zinc, manganese, copper) have shown high efficiency, with an activation energy of 39.76 kJ mol⁻¹. Effective catalysts and understanding reaction mechanisms are key for further progress. Álvaro Farias A. da Mata Dayse C. S. Martins Jorge L. S. Milani Rafael P. das Chagas Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.6406135 https://publicacoes.softaliza.com.br/ise2024/article/view/11175 Sustainable transitions involve not only a phase of creation and adoption of new technologies and processes, but also a dynamic of destruction and destabilization of consolidated sociotechnical regimes. This research investigated, through content analysis, the recent set of policies developed by the State of São Paulo, aimed at reducing greenhouse gas emissions and decarbonizing the land transportation sector. Based on the proposed analysis framework, it was possible to verify that the Plans analyzed tend to focus more on the dimension of the emergence and diffusion of new low-carbon transportation technologies, to the detriment of actions aimed at weakening established regimes. Rodrigo Foresta Wolffenbüttel Flávia Consoni Tatiana Bermudez Luciana Cristina Lenhari da Silva Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.3936780 https://publicacoes.softaliza.com.br/ise2024/article/view/11191 This paper presents a brief review of the studies on thermal energy storage systems utilizing both sensible and latent heat in Brazil. The primary objective is to identify and evaluate the storage technologies that have been studied or installed in the country, with a focus on pinpointing key challenges and prospects for these systems. The bibliographic research was performed in the Scopus database, focusing on works in the fields of Engineering, Energy, and Physics and Astronomy, published between 2015 and 2024. The review reveals that most studies have concentrated on improving heat transfer to energy storage materials/fluids, either through the development of new materials or by incorporating fins in storage tanks. Furthermore, only one study addressed an installation in Northeast Brazil. Paulo Henrique Neves Pimenta Gino Colherinhas Getúlio Santiago dos Santos Junior Gabriela Miguel Fraga Felipe Pamplona Mariano Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.3024815 https://publicacoes.softaliza.com.br/ise2024/article/view/11150 This work presents a GIS-based approach to identifying locations for installing solar cooperatives in a densely populated urban neighborhood. This approach allows us to analyze the impact of heat islands in urban areas on the energy production of solar cooperatives. The identified regions by the approach are close to the power distribution network, seeking to reduce power losses. The findings show the feasibility of integrating solar cooperatives in high-density urban environments, where strategic site selection can optimize solar energy generation and improve power distribution efficiency. Luciano Curvello Amaro Christian Jhojan Palacios Quispe Joel David Melo Trujillo Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8460718 https://publicacoes.softaliza.com.br/ise2024/article/view/11166 Electrode materials based on NiCo2O4 associated with CoNi-LDH are interesting in the area of ​​energy storage. In this work, the obtaining of CoNi-LDH from ZIF-67, according to XRD data, was successful. The association of NiCo2O4 and CoNi-LDH proved to be efficient, where the NiCo2O4@CoNi-LDH material presented superior electrochemical results when compared to its precursors individually. Furthermore, are observed for NiCo2O4@CoNi-LDH specific capacitance of 586.96 F g-1 and coexistence of charge storage mechanisms controlled by diffusion and capacitive processes, emphasizing the excellent potential of this material in the composition of positive electrodes of energy storage devices. Cristiane Garcia Silva Raylander rodrigues Paulo Roberto Martins Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7374860 https://publicacoes.softaliza.com.br/ise2024/article/view/11182 This study assesses the feasibility of integrating hydro and solar power with a Hydrogen-based Electrical Energy Storage System (H2EESS) at the Serra da Mesa hydroelectric Brazilian power plant. Hydrogen would be produced through water electrolysis, taking advantage of the available excess renewable energy, and subsequently converted back into electricity through fuel cells. The integration of hydro and solar power with H2EESS resulted in an increase of 11.10% in the energy produced compared to conventional hydroelectric generation, with 36.06% of this increase coming from H2EESS. Additionally, there was a 9.71% increase in the utilization of substation capacity. These results highlight the feasibility and benefits of integrating hydro and solar power with H2EESS. John Villena Fernando Nunes Belchior José Luis Domingos Julian David Hunt Pedro José Abrão Gabriel Machado Lima1 Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8240866 https://publicacoes.softaliza.com.br/ise2024/article/view/11198 Data mining plays a crucial role in the analysis of energy data by enabling the extraction of valuable information from large and complex datasets. In the energy sector, this technique helps identify patterns, trends, and correlations that are not easily detectable through traditional methods. When combined with data visualization tools like PowerBI, it provides decision-makers with clear and actionable insights, facilitating strategic planning and operational efficiency. In the context of the energy transition, this article presents an analysis of data on installed generation capacity in the State of Goiás in Brazil. Data analysis revealed a clear trend in the adoption of distributed solar photovoltaic generation across most projects in the state and concluded that the southern and central regions possess the greatest potential for energy generation. Saymon Fonseca Santos Mendes Getúlio Santiago dos Santos Júnior Gustavo da Costa Vergara Lina Paola Garces Negrete Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8153681 https://publicacoes.softaliza.com.br/ise2024/article/view/11157 The present work aims to analyze the Bills presented regarding the topic of the Implementation of Green Hydrogen as a new sustainable and renewable energy source. Throughout the text, topics such as the quality of hydrogen to be used, incentives for research, development of production, regulation, inspection, and production of green hydrogen are addressed. In addition, it analyzes and gathers the ideas present in existing Bills s to unify clear guidelines on the production, use, transport, storage, and trade of this resource. Ítalo Vinicuis Marques dos Santos Yaeko Yamashita Joaquim José Guilherme Aragão Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.9092242 https://publicacoes.softaliza.com.br/ise2024/article/view/11173 The energetic use of biogas from waste contributes to meeting global energy demand while addressing environmental issues, especially in developing countries like Brazil. Despite increased biogas production capacity, its utilization for energy remains below potential indicating the existence of bottlenecks to its development. This study reviews literature to identify relevant barriers, categorizing findings by substrate and energy use. High investment costs was the most common barrier, regardless of substrate. Lack of infrastructure, technological maturity, and knowledge were also noticeable. The study suggests decentralizing policies and targeted subsidies, based on regional specifics and environmental benefits, to enhance biogas’s energy potential in Brazil. ANA PAULA BEBER VEIGA Gilberto Martins Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.6676550 https://publicacoes.softaliza.com.br/ise2024/article/view/11189 This paper investigates the technological (re)configuration within Brazil's mobility sector, emphasizing the simultaneous development of e-mobility (EVs) and well established biofuels pathway. By applying the theoretical frameworks of path dependence and technological trajectories, the study examines how Brazil's historical investment in internal combustion engines (ICEs) and biofuels has shaped current technological landscapes. The analysis reveals that Brazil's transition is not confined to a singular technological path but involves a coexistence of EVs and biofuels. This dual approach, characterized by the integration of emerging technologies with established ones, presents both challenges and opportunities. The paper discusses the implications of this coexistence and provides strategic recommendations for policymakers and industry stakeholders to support and optimize the integration of these technological paths. Edgar Barassa Marcelo Ferreira Tete Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.9667563 https://publicacoes.softaliza.com.br/ise2024/article/view/11205 SummaryAgro-industrial effluents are composed of food waste and chemical compounds, discharged from industry with a high organic load, pH outside neutrality, with high COD and BOD, and with a high solids. If not treated, the agro-industrial effluent can cause serious damage to the river and the environment. Biological treatment, both aerobic and anaerobic, is widely used in the treatment of agro-industrial effluents. The objective of this work was to evaluate the communities of microorganisms in the anaerobic reactor treatment of agro-industrial effluent, investigating the efficiency of the system in the transformation of organic matter into biogas. All operating parameters of a full-scale anaerobic IC reactor of an agroindustry were monitored. The preliminary results showed that the organic load, pH, redox potential, temperature influence the performance of the reactor and consequently the generation of biogas. In relation to the biological sludge, the alkalinity was between 660 and 940, values that allow a good buffering of the medium, the volatile fatty acids were between 96 and 162 avoiding the acidification of the reactor, the temperature of 29 and 34ºC favored anaerobic digestion. The macronutrient analysis showed that the influent to the reactor had total nitrogen between 34.6 and 58.5 mg/L, P between 7.86 and 17mg/L and ammonia nitrogen between 9.34 and 12.5 mg/L, well meeting the need of anaerobic microorganisms. The volatile solids were between 58 and 85%, optimal values for biodegradability, with all these parameters well monitored, a COD removal between 72 and 84% was observed and the generation of biogas at an average of 1072 m³/d. It is concluded that for a good performance of an anaerobic reactor and efficiency in anaerobic digestion and biogas generation, it is necessary that the physicochemical parameters are well monitored. Analice Pereira Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.4151405 https://publicacoes.softaliza.com.br/ise2024/article/view/11164 A life cycle assessment approach, replacing the hydrogen production method of natural gas steam reforming with eucalyptus biomass gasification, based on the state-of-the-art hydrogen production under Brazilian conditions, considering the internal and external resources involved and the main equivalent carbon dioxide emissions of each method to quantify and compare the carbon footprint. This study aims to estimate and compare the life cycle environmental impacts of producing 1 kg of hydrogen in three scenarios: i) S1H2 - grey, ii) S2H2 - blue, and iii) S3H2 -eucalyptus biomass gasification. The ReCiPe midpoint (H) method was used to assess eight impact categories. The results show that S1H2 and S2H2 have total emissions of 17.5 and 11 kg CO2 eq., respectively, while S3H2 avoids the emission of 0.234 kg CO2 eq. Potential reductions in greenhouse gas emissions are found by replacing fossil fuels with eucalyptus biomass in the S3H2 due to photosynthesis, which CCUS. Samuel Alberto Ouana Adriano Viana Ensinas2 Halima Khalid Marcio Montagnana Vicente Leme Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.2744496 https://publicacoes.softaliza.com.br/ise2024/article/view/11180 Savonius rotors are vertical-axis wind turbines characterized by their "S" shape, low speed, low noise, and effective startup capabilities. Composed of two semi-cylindrical blades, the rotation is initiated by the interaction of the fluid with the blade surfaces, generating combined torques. To enhance understanding of this turbine's behavior, this study presents a simplified model of the flow around the rotor using the Fourier Pseudospectral Method coupled with the Immersed Boundary Method. The model assumes an incompressible, Newtonian fluid with constant properties, no heat transfer or gravitational effects, and a two-dimensional analysis. The results, based on ReD = 200, evaluate the flow over the static rotor and show that the advancing blade has a higher drag coefficient at startup compared to the returning blade. This behavior suggests the rotor's direction of rotation under the pre-established flow conditions in an induced rotation. Mylena Carvalho Silva Andreia Aoyagui Nascimento Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7323319 https://publicacoes.softaliza.com.br/ise2024/article/view/11196 Industrial activities are major generators of solid organic waste and liquid effluents which, due to environmental preservation principles, need to be treated before disposal to avoid pollution. This waste has a high organic matter content, which makes it a potential substrate for biogas production. The aim of this work is to assess the potential for biogas production from a mixture of industrial effluents from different industries, using a batch system. Samples of substrate and inoculum were collected at the Maringaense Wastewater Treatment Company, after which their physical and chemical characteristics were determined. The biogas was quantified by measuring the volume produced each day, and its composition was determined using a gas chromatograph. After the tests, the highest biogas and methane yields were 721.29 NmL gSV-¹ and 461.69 NmL gSV-¹, respectively. Bacar Mané Nehemias Curvelo Pereira Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.9498689 https://publicacoes.softaliza.com.br/ise2024/article/view/11155 In the ongoing quest to mitigate climate change and reduce environmental impact, the substitution of fossil fuels with biofuels has emerged as a critical strategy. Ethanol and biodiesel, as renewable biofuels, offer a promising alternative to traditional gasoline and diesel, respectively, understanding the carbon dioxide (CO2) equivalent emissions of these fuels is key to evaluating their potential benefits. Gasoline and diesel, derived from petroleum, are major contributors to greenhouse gas emissions, particularly CO2. When combusted, these fossil fuels release significant amounts of CO2, a greenhouse gas that contributes to global warming. The carbon intensity of gasoline and diesel is high, making them a primary target for reduction in efforts to combat climate change. In contrast, ethanol, primarily produced from crops like corn or sugarcane, and biodiesel, derived from vegetable oils or animal fats, offer a lower carbon footprint. Larissa da Silva Freire Paulo Takao Okigami Caroline Winter Catharin Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.9272427 https://publicacoes.softaliza.com.br/ise2024/article/view/11171 The rapid increase in waste generation from industrial, municipal, and domestic sources, coupled with stricter environmental regulations, highlights the need for innovative residues valorization routes. Concurrently, global decarbonization goals and climate neutrality commitments have driven the search for technologies that reduce fossil fuel emissions. In this context, hydrothermal processes are gaining attention for their role in converting biomass into valuable products such as biofuels. Hydrothermal processes, including hydrothermal carbonization, liquefaction, and gasification, operate under distinct conditions to produce solid, liquid, or gaseous products. This review evaluates the scale and economic aspects of HTC and HTL processes, highlighting their potential in waste valorization and biofuel production. Pedro Marra Alves da Costa Lucas Clementino Mourão Isabela Milhomem Dias Christian Gonçalves Alonso Guilherme Botelho Meireles de Souza Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1085648 https://publicacoes.softaliza.com.br/ise2024/article/view/11187 This paper presents the perspectives of battery swap stations (BSS) to form virtual energy storage systems (VSS) considering electric micromobility (e-micromobility). A description of VSS and BSS characteristics describes the advantages and potential for these concepts. Then, the models required in decision-making are discussed. Finally, information about Brazilian real implementation is presented. CAMILO ALBERTO SEPULVEDA RANGEL LUCIANE NEVES CANHA VICTOR GOMES Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.2516200 https://publicacoes.softaliza.com.br/ise2024/article/view/11203 This study developed and evaluated a biogas purification method usingactivated carbon impregnated with iron oxide. The biogas was studied beforeand after passing through the filter, focusing on the removal of ammonia andhydrogen sulfide, two highly corrosive compounds that affect engineperformance and public health. The results indicated the effectiveness of thefilter in eliminating these contaminants, which contributes to the safety andefficiency of the use of biogas as a renewable energy source. The maincontributions of this work include the improvement in equipment durability andthe reduction of toxic emissions, with potential for future optimizations andapplicability in other industries that use polluting gases. LAYSA B. M. DE ARAUJO MAGALHÃES Sérgio Botelho de Oliveira Mariana do Prado e Silva Paulo Vinicius da Silva Resende Jair Dinoah de Araujo Junior Rafael Scherer da Silva Basso Geovanne Pereira Furriel Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8662581 https://publicacoes.softaliza.com.br/ise2024/article/view/11162 With the increase in demand for fossil fuels, biodiesel has assumed an important role in the global energy matrix. Brazil has also followed this scenario. One of the states that stands out is Goiás, one of the largest biodiesel producers in the country. Therefore, the objective of this study was to identify the current overview regarding raw materials, installed capacity, production and prospects for biodiesel in the state of Goiás, Brazil. This analysis was carried out using a bibliometric analysis methodology, combined with research in yearbooks and reports about biodiesel. The results showed that Brazil is the fourth largest producer of biodiesel in the world. Goiás is the third largest Brazilian producer, with approximately 1.2 million m³ of biodiesel in 2023. Highlight for the mesoregions of South Goiás and North Goiás, which together produce 70% of Goiás' biodiesel. Diogo Colvero Frank Willis da Silva Sena Daniel Fernandes da Cunha Rodrigo Costa Silveira Glaucilene Duarte Carvalho Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.5380777 https://publicacoes.softaliza.com.br/ise2024/article/view/11178 Second generation ethanol (E2G), also called bioethanol, green ethanol or cellulosic ethanol, is an advanced biofuel, made from residues left over from the manufacturing process of common ethanol (first generation ethanol, E1G) and sugar. It is a product that uses low environmental impact raw materials that would otherwise be discarded and has excellent logistical benefits. It is also considered one of the fuels with the lowest carbon footprint in the world. Chemically, second generation ethanol (E2G) is like first generation ethanol (E1G), the difference is in the way they are produced. E2G uses lignocellulosic plant biomass, reusing plant waste, such as straw, leaves, bagasse and wood chips. Gabriela Ferreira Matos Dione Neves de Souza Caroline Winter Catharin Larissa da Silva Freire Paulo Takao Okigami Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.3830795 https://publicacoes.softaliza.com.br/ise2024/article/view/11194 This work explores an alternative method for producing green hydrogen through water electrolysis. We employed NaNbO3 fiber-like particles as electrodes in an alkaline medium. The fibers were obtained through conventional thermal treatment at 550 °C for 240 minutes from the Na2Nb2O6·H2O metastable phase, previously synthesized by a microwave-assisted hydrothermal method. The synthesis of Na2Nb2O6·H2O was conducted at 160 ºC for 40 minutes. Electrodes were prepared by dropping a suspension containing NaNbO3 fibers onto a glassy carbon electrode. We compared the use of pure NaNbO3 with NaNbO3 combined with Vulcan carbon. Both conditions demonstrated activity for hydrogen production; however, NaNbO3 combined with Vulcan carbon yielded a higher current density. Guilhermina Ferreira Teixeira Luiz Felipe Cabral Lino Fláavio Colmati Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.4496539 https://publicacoes.softaliza.com.br/ise2024/article/view/11153 This article assesses the relevant organizational capabilities needed for the electric bus industry in Brazil to achieve significant market performance. The qualitative research relies on a literature review to analyze the state of the art and identify sector gaps. The results indicate that, to address challenges such as lack of funding, it is essential to develop organizational capabilities such as governance, leadership, innovation, and organizational culture. These capabilities are crucial for mobilizing resources, consolidating strategic partnerships, and implementing policies and practices that promote the transition to sustainable mobility, both for decarbonizing public transport and strengthening the national industry. Raquel Teixeira Gomes Magri Flávia Consoni Luiz Carlos Pereira da Silva Tatiana Bermúdez-Rodríguez Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.9207996 https://publicacoes.softaliza.com.br/ise2024/article/view/11169 Chemical fixation of CO2 for the formation of cyclic carbonates is an excellent strategy to reduce this gas in the atmosphere and invests in the production of value-added chemical products. The utilization of ionic liquids (ILs) immobilized on metal oxide supports represents a significant strategy for atmospheric CO2 mitigation, particularly through the fixation of CO2 into epoxides. In this regard, 1-methyl-3-(3-(trimethoxysilyl)propyl)imidazolium trichlorozincate IL incorporated onto Al2O3 are prepared that represents remarkable catalytic activity for the chemical fixation of CO2 in different with epoxides with 80-90% conversion. The catalytic activity is influenced by the electron-withdrawing groups or low steric hindrance of epoxides. Blendo Almeida Da Silva Jonas Xavier Torres Rafael Pavão das Chagas Muhammad Irfan Qadir1 Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.6267379 https://publicacoes.softaliza.com.br/ise2024/article/view/11185 The introduction of battery-electric buses (BEBs) in Brazil faces significant resistance, mainly due to the path-dependence on diesel buses and the uncertainties surrounding this new technology among regime actors, particularly incumbents in automotive industry. This paper aims to analyze the governance of actors involved in the deployment of BEBs in Brazil through the governance dynamics across the Multi-Level Perspective levels. We argue that the successful deployment of BEBs in Brazil requires governance arrangements that promote coordination among actors across different sectors (government, industry, academy, society) as well as coherence between public policies at national and state levels. Tatiana Bermúdez Rodríguez Flávia Luciane Consoni Luciana Cristina Lenhari da Silva Rodrigo Foresta Wolffenbüttel Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7730355 https://publicacoes.softaliza.com.br/ise2024/article/view/11201 The transmission grid consists of interconnected substations and power lines enabling the flow of energy from generation sources to distribution centers. Auxiliary services, essential for the supervision, control, and protection of the transmission network, are typically powered by internal sources (tertiary winding), external sources (distribution grid) or by diesel generators. This work presents a comparative analysis between the traditional diesel generator and an innovative solution consisting of lithium-ion batteries coupled with photovoltaic generation. Employing HOMER PRO, technical and economic assessments were conducted. Although the renewable system incurs a higher initial investment, it exhibits significantly lower operational costs and environmental impact. This alternative offers great potential for use, especially in substations without availability of internal power sources or those far from the distribution grid. Marcelo Nogueira Bousquet Leovir Cardoso de Aleluia Junior Luciano Coutinho Gomes Enes Gonçalves Marra Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8371588 https://publicacoes.softaliza.com.br/ise2024/article/view/11160 This study aimed to synthesize and evaluate metal catalysts supported on Al2O3 applied to the supercritical water gasification of ethanol. Monometallic catalysts based on Cu and Ni at 5% by mass and bimetallic catalysts with Mg addition were prepared to achieve this. The catalysts were produced via aqueous impregnation of metal nitrates with excess solvent, followed by calcination and characterization (SEM, XRD, N2 adsorption/desorption, XRF, and TG/DTA). Catalytic tests were performed in a continuous-flow reactor with a feed flow rate of 5 ml/min, ethanol:H2O molar ratio of 1:10, and 5 g of catalyst, with a temperature range from 450 to 60 ºC. Results revealed that the best ethanol conversions were achieved with Mg in the active phase (58% for Cu-Mg/Al2O3). However, higher ethanol conversion with bimetallic catalysts did not significantly increase H2 production, with the maximum gas flow achieved at 600 ºC using the Ni/Al2O3 catalyst. João Francisco Ponse Isabela Milhomem Dias Guilherme Botelho Meireles de Souza Lucas Clementino Mourão Jarbas Almeida de Melo Christian Gonçalves Alonso Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8495767 https://publicacoes.softaliza.com.br/ise2024/article/view/11176 The use of sustainable aviation fuels, better known as SAF, is essential for Brazil to advance in the decarbonization of the aviation sector and meet the goal established by the International Civil Aviation Organization (ICAO): zero carbon emissions in international aviation by 2050. The use of SAF represents less than 0.5% of the fuel volume used by air transport. Brazil has the potential to lead this new market globally, due to the availability of raw materials, technologies and extensive experience in the production of biofuels. The matter is being discussed in the Brazilian National Congress through the Fuel of the Future Bill (PL 528/2020). One of the proposals is that air operators will be required to reduce greenhouse gas emissions on domestic flights using SAF. Caroline Winter Catharin Larissa da Silva Freire Paulo Takao Okigami Gabriela Ferreira Matos Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1293748 https://publicacoes.softaliza.com.br/ise2024/article/view/11192 Concentrated solar power (CSP) emerges as a promising solution to address the intermittency of renewable sources, such as photovoltaic solar energy, due to its ability to store thermal energy without the need for immediate conversion to electricity. This study aims to identify thermal storage systems applicable to CSP generation, with a focus on maximizing the use of solar energy in Goiás. The methodology includes a literature review on CSP plants with thermal storage systems. Four types of solar concentrators were identified: parabolic trough, solar tower, linear Fresnel reflector, and parabolic dish. The thermal storage method can be by sensible or latent heat. Goiás' geographical location is advantageous for CSP production, further enhanced by Brazil's industrial capacity, which already includes key components of the CSP supply chain. Paulo Henrique Neves Pimenta Felipe Pamplona Mariano Gino Colherinhas Getúlio Santiago dos Santos Junior Gabriela Miguel Fraga Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8372020 https://publicacoes.softaliza.com.br/ise2024/article/view/11151 The Amazon region, especially the state of Amapá, lacks biofuel producing units, despite there being a large consumption of it. This work analyzes the feasibility and impacts of a biodiesel plant in the state of Amapá, using all soy produced in the state itself. For this, an economic analysis was carried out using NPV (Net Present Value) and an environmental analysis using LCA (Life Cycle Assessment). It was concluded that a biodiesel plant with 10m³ of daily production will bring income and jobs to the region, without significantly impacting the environment, since the main environmental impact is from the planting and harvesting of soybeans. This work could serve as a basis for future industrial ventures in the biofuels sector. Erich Potrich Rafael Lima Perreira Larissa Souza Amaral Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7938356 https://publicacoes.softaliza.com.br/ise2024/article/view/11167 This work aims to estimate the theoretical production potential of renewable hydrogen for use in ammonia production in Minas Gerais and assess the economic viability of the proposed systems. Using mixed integer linear programming with LINGO 20® and Excel® software, the optimization model confirmed the viability of the ammonia production routes, demonstrating the profitability of the project. The highest investment was found in case 3 (0.00041 M$/ton.NH3), offset by the low cost of the raw material. Case 1 had the second highest investment due to the installation of PEM electrolysis cells (0.00024 M$/ton.NH3), while cases 2 and 4 had lower investments. Sales revenue was 0.0015 M$/ton.NH3 in all cases. Long-term economic sustainability requires continuous optimization, cost management and consideration of the specific context of each project. Halima Khalid Adriano Viana Ensinas Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.3621574 https://publicacoes.softaliza.com.br/ise2024/article/view/11183 This approach is an appealing alternative for energy production in Brazil, which is the largest fruit and vegetable producer worldwide. Parameters such as pH, stirring, temperature, and FOS/TAC ratio were continuously evaluated for process optimization. Results demonstrated that this process could reach a biogas production (60% CH₄) of 1.200 m³/day, equivalent to 788.4 MWh/year, taking into account an energy conversion factor for biogas with 60% methane adjusted to 1.8 kWh/Nm³. It encourages the continuity of optimizations for increasing biogas production and, consequently, to continue towards a sustainable energy generation economy. Roberta Ferreira Calebe Abrenhosa Matias Wister Fernandes Alves Laysa Bernardes Marques de Araujo Danns Barbosa Pereira Sérgio Paulo Coelho Sérgio Botelho de Oliveira Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.3263536 https://publicacoes.softaliza.com.br/ise2024/article/view/11199 Photovoltaic systems and energy storage have proven to be promising solutions for the management and generation of electrical energy, especially in low-voltage units. This work aims to evaluate the impacts of implementing a photovoltaic system combined with a lithium-ion battery system in School of Engineering of the Federal University of Goiás. Simulations will be conducted using the HOMER software. In this environment, simulations of the installations of the same generation set and battery system will be carried out to evaluate the results in different applications and identify the benefits that the consumer will receive in the proposed scenarios. The following scenarios will be evaluated: an increase in solar generation without the battery system and an increase in solar generation with the battery system. From this analysis, it is expected to measure the gains from adding batteries to photovoltaic systems installed in low voltage (LV), which are responsible for the significant growth of microgeneration in recent years. Lucas Pimenta Frederico Marques Costa Lucas Gomes de Mello Tiago Alves Barros Rosa Enes Goçalves Marra Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1971242 https://publicacoes.softaliza.com.br/ise2024/article/view/11158 Photocatalysis has drawn the attention of researchers worldwide as a promising sustainable approach to reduce fossil fuel dependency, thus decreasing the advance of the greenhouse effect. In this context, Nb2O5 is a wide bandgap semiconductor, with good synthetic versatility, as its structural and morphological parameters can be tuned with ease. In the present work, pristine Nb2O5 was modified by changing the pH of the hydrothermal media. The properties of the resulting materials were rationalized based on the synthesis pH, and they were tested against H2 evolution assays, using methanol as a sacrificing agent. Only the material obtained at pH = 8 was able to produce H2, which was attributed to the higher incidence of structural defects induced by hydroxyl ions, allowing improved charged transfer between the photocatalyst and the Pt co-catalyst. Paulo Henrique Horta Nunes Higor de Oliveira Alves Lucas Leão Nascimento Rafael Aparecido Carvalho Souza Antonio Otavio de Toledo Patrocinio Adrielle Domingos dos Santos Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8217143 https://publicacoes.softaliza.com.br/ise2024/article/view/11174 The cement industry is an energy intensive sector. The production of one ton of cement requires 4 GJ of thermal energy, which is produced through the combustion of fossil fuels and 100 kWh used to drive electrical machines. A considerable portion of the heat produced is discarded into the environment without proper utilization. Currently, approximately 7% of global CO2 emissions come from the cement industry. The gases used in the process containing waste heat are discharged through the outlets of the cyclone tower and clinker cooler at temperatures of 300 to 450°C, available for WHR energy recovery systems, such as the Organic Rankine Cycle. Wil be studied the reduction of fossil fuel consumption and CO2 emissions through the production of electrical energy using waste heat. FERNANDO HARAOKA Antonio Garrido Gallego Reynaldo Palacios Bereche Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8898098 https://publicacoes.softaliza.com.br/ise2024/article/view/11190 In face of the increasing adoption of renewable sources like solar and wind, traditional reliability assessments need revision. Conventional methodologies, designed for predictable and controllable energy sources, fall short in addressing the uncertainty of renewables. This study aims to develop a methodology for assessing the reliability of Generation Systems (GS), focusing on renewable integration and analyzing a real Brazilian system. The innovation lies in incorporating probabilistic models to handle the variability and unpredictability of renewable resources, resulting in robust reliability analysis. The proposed methodology employs sequential and synchronous Monte Carlo simulations to calculate reliability indices, such as Loss of Load Expectation, Loss of Load Probability and Expected Energy Not Served. Validation was done on a real system from Minas Gerais. Results show that including renewables can significantly improve reliability indices. Thus, advanced reliability assessment methodologies are vital for addressing renewable uncertainties and enhancing system robustness. Vinicius Faria Costa Mendanha Jordanna Coelho Neves Lina Paola Garcés Negrete Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.6244723 https://publicacoes.softaliza.com.br/ise2024/article/view/11206 The construction sector is responsible for about 37% of global energy-related CO₂ emissions, reaching record levels in 2021, with a 5% increase compared to 2020. This growth undermines the 2050 decarbonization targets, requiring innovative solutions to mitigate its environmental impact. This article proposes urban reforestation, through planned tree planting, as a nature-based solution (NbS) for capturing and storing CO₂ generated in urban areas from new construction sites. In addition to capturing CO₂, tree planting offers additional benefits such as improving air quality, reducing energy consumption, combating global warming, and promoting health and well-being. The study examines the gap between the sector's climate performance and the urgent need for decarbonization, considering sustainable practices aligned with ESG principles and the UN Agenda 2030 guidelines. Gustavo Braz Carneiro Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.6336015 https://publicacoes.softaliza.com.br/ise2024/article/view/11149 The integration of distributed energy resources challenges the financial stability of distribution companies and, thereby affects their future investment capacity. Under these conditions, determining efficient tariff structures is essential to balance the interests of both distribution companies and consumers. By grouping distributed energy resources owners into energy communities, it is possible to optimize the management and utilization of these resources, aligning them with tariff structures within the day-ahead market context. This work presents an innovative two-stage framework for determining tariff structures in the day-ahead market, with a focus on the charge management of plug-in hybrid electric vehicles. This methodology was applied in a 4-node medium voltage distribution network. The findings show an improvement of 29.4% in the load factor, reducing the need for major investments in the distribution network and guaranteeing the distribution company's revenues. Christian Jhojan Palacios Quispe Joel David Melo Trujillo Jesús Maria López Lezama Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1232545 https://publicacoes.softaliza.com.br/ise2024/article/view/11165 Electrode materials based on NiCo2O4 associated with CoNi-LDH are interesting in the area of ​​energy storage. In this work, the obtaining of CoNi-LDH from ZIF-67, according to XRD data, was successful. The association of NiCo2O4 and CoNi-LDH proved to be efficient, where the NiCo2O4@CoNi-LDH material presented superior electrochemical results when compared to its precursors individually. Furthermore, are observed for NiCo2O4@CoNi-LDH specific capacitance of 586.96 F g-1 and coexistence of charge storage mechanisms controlled by diffusion and capacitive processes, emphasizing the excellent potential of this material in the composition of positive electrodes of energy storage devices. Raylander rodrigues Cristiane Garcia Silva Paulo Roberto Martins Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7727277 https://publicacoes.softaliza.com.br/ise2024/article/view/11181 Why is the State of São Paulo (SSP) betting on biogas, biomethane, and low-carbon hydrogen as alternatives for reducing greenhouse gas emissions? This research is based on analyzing the main public policy instruments of SSP that outline long-term actions for the state to meet the international agreements it is a signatory to. The conclusion highlights that this strategy is justified by the potential to leverage the economic power and established production and distribution infrastructure of the sugar-energy sector and the potential regarding the disposal of its solid waste. The incorporation of biogas, biomethane, and hydrogen is expected to serve as alternative sources to fossil fuels, reinforcing the need for a combination of various solutions to advance the decarbonization of the transportation sector. Luciana Lenhari João Vitor Leme Flavia Consoni Tatiana Bermudez Rodrigo Wolffenbüttel Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.5776660 https://publicacoes.softaliza.com.br/ise2024/article/view/11197 Brazil has a relatively clean energy matrix; however, it faces significant structural challenges to advance in decarbonization. This article highlights the country's dependence on imported inputs, such as fertilizers and rare earth minerals, which are essential for the energy transition. The integration between the mining and agribusiness sectors emerges as a strategic opportunity to overcome these obstacles, promoting the development of internal supply chains and strengthening national autonomy. Furthermore, this integration encourages technological innovation in renewable energies and biofuels, allowing Brazil to reduce its carbon footprint and increase its global competitiveness in the context of the green economy, meeting international climate commitments. Gustavo Braz Carneiro Kátia Regina de Abreu Gomes Moisés Pinto Gomes Helder Quadros Santos Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.4214385 https://publicacoes.softaliza.com.br/ise2024/article/view/11156 Hydrogen is a crucial energy vector for the global energy transition, with significant potential to decarbonize industrial and transportation sectors. Excessive reliance on fossil fuels can increase vulnerability to price fluctuations and geopolitical issues, making the adoption of a diversified and resilient energy mix necessary. Diversifying pathways by incorporating renewable and green hydrogen not only reduces emissions but also stimulates innovation, creates jobs in emerging sectors, and strengthens collaboration among governments, industries, and research institutions. This approach is important for the development of technologies that integrate different production processes, such as carbon capture and the use of renewable sources, for the transition to a low-carbon economy. Yaeko Yamashita Felipe Azevedo Rios Silva João Vitor Lima Sousa Renato Cabral Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.6661658 https://publicacoes.softaliza.com.br/ise2024/article/view/11172 The global energy crisis, exacerbated by the depletion of fossil resources and the impacts of climate change, underscores the urgent need for a transition to renewable energy systems. The Fischer-Tropsch process presents a viable solution for producing synthetic fuels by converting syngas (H₂ and CO) into longer-chain hydrocarbons, suitable for various fuels and chemical products. This study focuses on the synthesis of an efficient and cost-effective catalyst, evaluating its performance in a Fischer-Tropsch reaction within a continuous-flow reactor aiming a process integration within hydrogen-rich gas production. In this study, a 20% Co/Al2O3 catalyst was synthesized via the impregnation method and evaluated in Fischer-Tropsch synthesis to produce synthetic crude oil. Characterization confirmed successful impregnation of the active phase, with minimal alteration to the material's morphology following thermal treatment. The reaction tests demonstrated an average CO conversion rate exceeding 80%. The liquid fraction analysis revealed a significant presence of aliphatic hydrocarbons, primarily in the C16 to C26 range. Thalyta da Cruz Assis Pontes Rafael Felipe de Rezende Lucas Clementino Mourão Isabela Milhomem Dias Guilherme Botelho Meireles de Souza Christian Gonçalves Alonso Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.4143227 https://publicacoes.softaliza.com.br/ise2024/article/view/11188 This paper aims to present a mathematical model developed and applied via software to evaluate the performance of electric buses. The purpose of developing this model is to enable the assessment of battery charge behavior in these buses, thereby facilitating the installation of fast chargers at strategic points in the road network. Jeiel Carvalho de Souza Santos Augusto Henrique Nogueira Nunes Geyverson Teixeira de Paula Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8517960 https://publicacoes.softaliza.com.br/ise2024/article/view/11204 The present work aims to perform a computational simulation of a Proton Exchange Membrane (PEM) reactor in the water electrolysis process for green hydrogen production using Ansys Fluent software. The geometry of the electrolyzer was designed using Solid Edge software, followed by a mesh quality study. Subsequently, the current density was analyzed by varying voltage values between 1.5V and 1.8V, and a polarization curve of electric voltage as a function of current density was generated. This work has the potential to contribute in the development of more efficient and commercially viable PEM electrolyzers. Marcos Montezuma ENIO PONTES DE DEUS ANTONIO JEFFERSON MANGUEIRA SALES MILENA PEIXOTO RODRIGUES SANTINO LORUAN SILVESTRE DE MELO RUAN RODRIGUES SANTOS Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7775603 https://publicacoes.softaliza.com.br/ise2024/article/view/11163 The drag and lift coefficients are dimensionless numbers that describe the force interactions between a fluid flow and solid objects, and they are essential for designing and optimizing wind turbine blades to improve efficiency. The computational approach enables the study of different aerodynamic profiles, allowing for a detailed analysis of their behavior under various flow conditions. To investigate these coefficients, a geometric model and three-dimensional complex meshes were developed to study airflow over a wind turbine blade based on a NACA 4415 profile, with a 10° angle of attack, unit length, and chord, and a Reynolds number of 750,000. For this purpose, the OpenFOAM software was chosen, as it is a free, open-source tool dedicated to solving Computational Fluid Dynamics problems. The main result is the development of a process for conducting computer simulations of three-dimensional turbulent flows over complex geometries, specifically wind turbine blades. Isadora Venancio Bastos Felipe Pamplona Mariano Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1429316 https://publicacoes.softaliza.com.br/ise2024/article/view/11179 This study investigates the efficiency of bifunctional catalysts [Bu4N]n[MCl4] (where M = Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+) in the reaction between CO2 and propylene oxide for the synthesis of the respective cyclic carbonate. Among the tested catalysts, [Bu4N]2[CoCl4] was the most effective, achieving up to 77% conversion with 100% selectivity for propylene carbonate. The results indicate that the choice of the metal ion is crucial for catalytic performance. Moreover, the simplicity of synthesis and low cost of these catalysts make them viable for industrial applications. The next step involves optimizing the reaction conditions and evaluating the catalysts' efficiency with different substrates. Jhonny Willians de Oliveira Maciel Rafael Pavão das Chagas Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.5788530 https://publicacoes.softaliza.com.br/ise2024/article/view/11195 In the present work, the XFLR5 software is used to analyze the flow behavior over different airfoils, which can be applied to the profile of a wind turbine blades. First, the essential parameters for calculating the Reynolds number (Re) are defined, such as the kinematic viscosity of the air at the turbine installation site, the estimated average wind speed, and the mean chord. After determining the Re, a two-dimensional analysis is performed using the XFLR5 software. Then, 20 airfoil profiles available in the free Airfoil Tools database are selected. A comparative analysis of the lift, efficiency, and drag coefficients is carried out, leading to the selection of four profiles: CH10SM, EPPLER423, EPPLER420, and S1210. As a result, the CH10SM airfoil proved to be the most suitable, especially due to its ability to generate lift efficiently while minimizing the adverse effects of wingtip vortices and reducing drag. In conclusion, a trapezoidal wing with a CH10SM airfoil was designed, highlighting both aerodynamic and structural details. Guilherme Henrique Moura Guimarães Arthur Inácio Santos Silveira Felipe Pamplona Mariano Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.5628186 https://publicacoes.softaliza.com.br/ise2024/article/view/11154 The transition to electric buses as a solution to environmental and climate challenges in urban transportation is recognized as an effective approach to reduce CO2 emissions and to promote sustainable practices. This study aims to assess the impacts and challenges associated with the implementation of these vehicles, considering aspects such as public health, the environment, and quality of life, as well as understanding society's perspective on the issue. The research adopts a predominantly qualitative approach, complemented by a survey to collect data from the community of the State University of Campinas. The results reveal significant consensus on the environmental benefits of electric buses and the importance of service quality, while divergences are observed regarding preference for environmentally friendly options and economic issues associated with their adoption. Raquel Teixeira Gomes Magri Orlando Fontes Lima Júnior Janaina Antonino Pinto Luiz Carlos Pereira da Silva Daniel Iwao Suyama Joni de Almeida Amorim Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1677995 https://publicacoes.softaliza.com.br/ise2024/article/view/11170 The present study explores thermal comfort provided by air conditioning systems in confined spaces using Computational Fluid Dynamics (CFD) through the OpenFOAM software. The research simulates various airflow scenarios in a 2.44 m x 2.44 m room with different inlet angles of the air conditioner. Three simulations with oscillation periods of 6 s, 12 s, and 24 s were conducted, analyzing temperature stabilization and air quality using the EDT index. The results indicate that faster louver movements lead to better air distribution and energy efficiency. Additionally, OpenFOAM proves effective in optimizing ventilation to enhance thermal comfort and achieve energy savings. Marcelo Ramos Jordão Felipe Pamplona Mariano Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7113323 https://publicacoes.softaliza.com.br/ise2024/article/view/11186 This paper explores the impact of energy efficiency measures across key sectors in Goiás, Brazil, including agriculture, transportation, and industry. Through a review of current literature and case studies, the study highlights the adoption of advanced technologies such as precision irrigation, bagasse cogeneration, lightweight materials in vehicles, and energy-efficient logistics platforms. The findings reveal significant reductions in energy consumption and greenhouse gas emissions, contributing to regional economic growth and sustainability. Furthermore, the analysis emphasizes the role of policy initiatives and technological innovation in promoting energy optimization, particularly in agribusiness, transportation, and mining industries. This research provides a comprehensive understanding of how energy efficiency strategies can foster sustainable development and enhance competitiveness in Goiás. Gino Colherinhas Paulo Henrique Neves Pimenta Getúlio Santiago dos Santos Junior Gabriela Miguel Fraga Felipe Pamplona Mariano Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7417900 https://publicacoes.softaliza.com.br/ise2024/article/view/11202 The growing demand for renewable and sustainable energy sources has fuelled the development of alternative technologies for producing clean fuels. In this context, hydrogen (H₂) and methane (CH₄) stand out for their high energy potential and are viable alternatives for replacing fossil fuels. This review aims to analyse the efficiency of two-stage systems in the combined production of hydrogen and methane. Anaerobic digestion in two-stage systems is proving to be a promising approach, as several studies have shown positive results, emphasising the importance of anaerobic treatment in these systems. Bacar Mané Nehemias Curvelo Pereira Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1285061 https://publicacoes.softaliza.com.br/ise2024/article/view/11161 Based on the energy demand for fuels for the transport sector in Colombia, this study analyzed a scenario for replacing diesel with palm oil biodiesel, gasoline with sugar cane ethanol, aviation fuel with palm oil SAF and natural gas with sewage and vinasse treatment biogas. The results showed a reduction in CO2 emissions, circular economy and excellent gains from replacing these fuels. Alvaro Ferney Algarra Rincon Gabriella Vilela Coelho Adriano Viana Ensinas Carlos Eduardo Castilla Alvarez Samuel Alberto Ouana Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.8511239 https://publicacoes.softaliza.com.br/ise2024/article/view/11177 The reduction of carcinogenic carbon dioxide can be achieved by the integration of its capturing and transformations into value added chemicals and fuels. One of the effective strategies is the production of cyclic carbonates from CO2 and epoxides, combining atomic efficiency with environmental benefits. In this study, we prepared an iron-based ionic liquid (IL) that represented a remarkable activity for the efficient chemical fixation of CO2 in various aromatic and aliphatic epoxides. The prepared Tris-butyl-3-methylimidazolium ferricyanide [BMIm]3[Fe(CN)6] IL showed conversions ranging from 20 to 100% with maximum selectivity to their corresponding cyclic carbonated. Our IL formed ionic containers is akin to the catalytic active membrane with confined spaces that significantly controlled the diffusion of reactants, intermediates and products. Aliphatic small sized epoxides exhibit higher conversion and selectivity to cyclic carbonate compared to bulkier ones. This suggests that larger epoxide substrates faced diffusion limitations within the confined spaces of IL, thereby restricting the reactants access to the catalytic active sites. Camila Porto Ebersol Jonas Xavier Torres Muhammad Irfan Qadir Rafael Pavão das Chagas Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.5936710 https://publicacoes.softaliza.com.br/ise2024/article/view/11193 The study of fluid flow around various surfaces is crucial in several applications of mechanical engineering, especially in cylindrical geometries of circular section, common in structures such as bridges, wind turbines, cooling systems, and power towers. In this work, we solve the two-dimensional mass conservation and Navier-Stokes equations in the x and y variables, neglecting gravitational effects, by applying the Fourier pseudospectral method coupled with the immersed boundary method. We define a domain with two cylindrical boundaries of diameter equal to 1 in a rectangular domain, with Reynolds Number (Re), Re=100. The results obtained are promising and closely match the existing literature reviews. Ismar Mascarenhas Mylena Carvalho Silva Andreia Aoyagui Nascimento Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1077951 https://publicacoes.softaliza.com.br/ise2024/article/view/11152 Currently, it has been extremely important to study the açaí production chain with a view to the sustainable destination of the waste generated. Given this scenario, the use of in silico tools would solve part of the problems and provide opportunities for implementing productive solutions on site. According to the Food and Agriculture Organization of the United Nations, Brazil has 1.3 billion tons of waste annually, with 1/3 of food intended for consumption being wasted due to the lack of viable recycling strategies. The generation of electrical energy via cogeneration of biomass waste would solve the major problem of tons of açaí waste produced and would favor the development of local Amazonian communities and regional agribusiness. Larissa Souza Amaral Erich Potrich Jadson Coelho de Abreu Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.9281840 https://publicacoes.softaliza.com.br/ise2024/article/view/11168 This study analyzes the role of the circular economy (CE) in Brazil's energy transition, focusing on the management of lithium-ion batteries (LIBs) used in electric vehicles (EVs). Through the framework of reflexive governance, it examines public policies, industrial initiatives, and innovation projects that promote sustainability in the LIB value chain. Initiatives such as the pilot production plant in Curitiba and the local production of batteries by companies like BYD and Bravo Motor Company highlight Brazil's capacity to foster innovation, reduce costs, and create local employment. Additionally, the integration of CE practices, such as recycling and reuse, enables more efficient resource management, aligning with global decarbonization goals. This study identifies key initiatives driving a transition towards a circular economy for a more sustainable future. Carolina Pineda Tatiana Bermúdez Rodríguez Flávia L. Consoni De Mello Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.2424455 https://publicacoes.softaliza.com.br/ise2024/article/view/11184 This paper presents the steady state modelling of a Wind Power Generation System (WPGS) by using the load flow technique. To be connected to the grid, the WPGS demands the use of a power converter in a back-to-back configuration. The load flow technique requires the use of electrical components and nodal analysis where voltages are the unknown variables, referred to as slack, PV and PQ buses. In this work, the back-to-back power converter is modelled as an interface between the WPGS and the AC-60Hz grid. Simulation results are used to validate the model by using the parameters of a fraction of a WPGS plant located in the northeast of Brazil. Antônio Baleeiro Wander Gonçalves da Silva Bernardo Pinheiro de Alvarenga Geyverson Teixeira de Paula Enes Gonçalves Marra José Wilson Lima Nerys Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.1816664 https://publicacoes.softaliza.com.br/ise2024/article/view/11200 Biofuels play a key role in the energy transition and decarbonization of the planet. This study evaluates the performance of a 200 kW micro gas turbine (MGT) fueled by biogas, biomethane, and green hydrogen. We model and compare the mass flow rates required for each biofuel, highlighting their lowest calorific values (LHV). Biogas, with its lowest methane content, requires the highest mass flow, while hydrogen, with its highest energy density, requires the least. The analysis supports MGTs as a sustainable alternative to diesel generators, especially in rural areas. Future work will focus on implementing demonstration systems for practical applications Leonardo Pedrini Sérgio Botelho de Oliveira Copyright (c) 2025-02-07 2025-02-07 2 1 10.5224/SP.2024.7956096