Pub Date : 2025-02-13DOI: 10.1016/j.cles.2025.100181
Siti Nuramirah Rabbani Muhammad Zaki , Nurul Fatahah Asyqin Zainal , Chia Chay Tay
The rapid accumulation of end-of-life tires, driven by global vehicle use, presents severe environmental challenges. Each year, approximately 3 billion tires are produced globally, with 800 million reaching end-of-life, of which 41% are landfilled without material or energy recovery. Pyrolysis has emerged as a sustainable solution, converting waste tires into valuable by-products, including pyrolysis oil, gas, and recovered carbon black (rCB). This bibliometric review analyzes 1,431 publications (2000–2024) sourced from Scopus to map research trends, advancements, and gaps in tire pyrolysis. Three primary research hotspots are identified: (1) co-pyrolysis, emphasizing feedstock optimization and microwave-assisted methods to enhance efficiency and product quality, (2) pyrolysis oil, addressing challenges in upgrading for industrial use, and (3) recovered carbon black (rCB), focusing on advanced demineralization and activation techniques to improve its properties. Key challenges identified include feedstock variability, catalytic system optimization, and process scalability. This review provides insights and a strategic framework for advancing tire pyrolysis, fostering sustainable practices, and driving innovation across energy, materials, and environmental applications.
{"title":"Global trends of waste tire pyrolysis research: a bibliometric analysis","authors":"Siti Nuramirah Rabbani Muhammad Zaki , Nurul Fatahah Asyqin Zainal , Chia Chay Tay","doi":"10.1016/j.cles.2025.100181","DOIUrl":"10.1016/j.cles.2025.100181","url":null,"abstract":"<div><div>The rapid accumulation of end-of-life tires, driven by global vehicle use, presents severe environmental challenges. Each year, approximately 3 billion tires are produced globally, with 800 million reaching end-of-life, of which 41% are landfilled without material or energy recovery. Pyrolysis has emerged as a sustainable solution, converting waste tires into valuable by-products, including pyrolysis oil, gas, and recovered carbon black (rCB). This bibliometric review analyzes 1,431 publications (2000–2024) sourced from Scopus to map research trends, advancements, and gaps in tire pyrolysis. Three primary research hotspots are identified: (1) co-pyrolysis, emphasizing feedstock optimization and microwave-assisted methods to enhance efficiency and product quality, (2) pyrolysis oil, addressing challenges in upgrading for industrial use, and (3) recovered carbon black (rCB), focusing on advanced demineralization and activation techniques to improve its properties. Key challenges identified include feedstock variability, catalytic system optimization, and process scalability. This review provides insights and a strategic framework for advancing tire pyrolysis, fostering sustainable practices, and driving innovation across energy, materials, and environmental applications.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100181"},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-05DOI: 10.1016/j.cles.2025.100178
Sascha Christian Burmeister , Daniela Guericke , Guido Schryen
Dynamic energy tariffs in combination with energy storage systems (ESS) and renewable energy sources (RES) offer manufacturers new opportunities to optimize their energy consumption. Flexible production planning empowers decision-makers not only to minimize makespan, but also to reduce energy costs and emissions. However, flexible production planning is a major challenge due to the fact that scheduling decisions affect energy demand, whose costs and emissions depend on energy procurement decisions. In Operations Research, the Green Flexible Job Shop Scheduling Problem (FJSP) addresses production planning decisions incorporating resource, environmental, and economic objectives. The Energy Procurement Problem (EPP) aims to efficiently acquire energy resources. In the literature, existing approaches for energy-aware scheduling neglect to procure energy from sources such as an uncertain dynamic energy market, RES, and ESS. We aim to close this research gap and propose a two-level approach based on a memetic Non-dominated Sorting Genetic Algorithm (NSGA-III) and linear programming with the goal of minimizing the makespan, energy costs, and emissions of a schedule, incorporating dynamic energy prices and emissions, RES, and ESS. We evaluate the approach in computational experiments using FJSP benchmark instances from the literature as part of a rolling horizon approach with real energy market data. We investigate the impact of RES and ESS by presenting estimated Pareto fronts, showing potential savings in energy cost and carbon emissions.
{"title":"A two-level approach for multi-objective flexible job shop scheduling and energy procurement","authors":"Sascha Christian Burmeister , Daniela Guericke , Guido Schryen","doi":"10.1016/j.cles.2025.100178","DOIUrl":"10.1016/j.cles.2025.100178","url":null,"abstract":"<div><div>Dynamic energy tariffs in combination with energy storage systems (ESS) and renewable energy sources (RES) offer manufacturers new opportunities to optimize their energy consumption. Flexible production planning empowers decision-makers not only to minimize makespan, but also to reduce energy costs and emissions. However, flexible production planning is a major challenge due to the fact that scheduling decisions affect energy demand, whose costs and emissions depend on energy procurement decisions. In Operations Research, the Green Flexible Job Shop Scheduling Problem (FJSP) addresses production planning decisions incorporating resource, environmental, and economic objectives. The Energy Procurement Problem (EPP) aims to efficiently acquire energy resources. In the literature, existing approaches for energy-aware scheduling neglect to procure energy from sources such as an uncertain dynamic energy market, RES, and ESS. We aim to close this research gap and propose a two-level approach based on a memetic Non-dominated Sorting Genetic Algorithm (NSGA-III) and linear programming with the goal of minimizing the makespan, energy costs, and emissions of a schedule, incorporating dynamic energy prices and emissions, RES, and ESS. We evaluate the approach in computational experiments using FJSP benchmark instances from the literature as part of a rolling horizon approach with real energy market data. We investigate the impact of RES and ESS by presenting estimated Pareto fronts, showing potential savings in energy cost and carbon emissions.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100178"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-30DOI: 10.1016/j.cles.2025.100176
J. Gutierrez , G. Merino , D. Lara , R. Borquez , N. Romero
This study explores a sustainable solution to address water scarcity in rural coastal areas. Using field data and simulations, the production cost of water was determined for a small-scale desalination plant designed and built by the University of Concepción. The plant employs nanofiltration technology and is powered by a hybrid system that includes solar panels, batteries, and a backup diesel generator, reducing reliance on non-renewable resources. This plant has been operational in the Cobquecura area of the Ñuble Region, Chile, since 2022. The methodology involved identifying an optimal operating profile, validated via simulations with Homer-Pro software, and calculating both the potable and irrigation water production and the average production cost of water. The results indicate an average water production cost of USD 3.19/m³, with 56 % of the cost attributed to the initial investment, 26 % to operational expenses, and 18 % to planned component replacements. This cost is significantly lower than the estimated cost of water delivered by tanker trucks, which can reach up to USD 24/m³ in the region. Additionally, tanker trucks are limited to operating under favorable weather conditions due to challenges posed by rural road infrastructure. This analysis highlights the technical and economic viability of integrating advanced desalination technologies with renewable energies, demonstrating their potential to address one of the most pressing environmental challenges in ensuring a reliable water supply for communities in remote areas. These findings offer a sustainable and innovative pathway to improve water scarcity and confirm the cost-effective application of renewable-energy-powered desalination solutions.
{"title":"Cost determination of water production in a nanofiltration desalination plant powered by a hybrid renewable energy system. Case study of Cobquecura, Chile","authors":"J. Gutierrez , G. Merino , D. Lara , R. Borquez , N. Romero","doi":"10.1016/j.cles.2025.100176","DOIUrl":"10.1016/j.cles.2025.100176","url":null,"abstract":"<div><div>This study explores a sustainable solution to address water scarcity in rural coastal areas. Using field data and simulations, the production cost of water was determined for a small-scale desalination plant designed and built by the University of Concepción. The plant employs nanofiltration technology and is powered by a hybrid system that includes solar panels, batteries, and a backup diesel generator, reducing reliance on non-renewable resources. This plant has been operational in the Cobquecura area of the Ñuble Region, Chile, since 2022. The methodology involved identifying an optimal operating profile, validated via simulations with Homer-Pro software, and calculating both the potable and irrigation water production and the average production cost of water. The results indicate an average water production cost of USD 3.19/m³, with 56 % of the cost attributed to the initial investment, 26 % to operational expenses, and 18 % to planned component replacements. This cost is significantly lower than the estimated cost of water delivered by tanker trucks, which can reach up to USD 24/m³ in the region. Additionally, tanker trucks are limited to operating under favorable weather conditions due to challenges posed by rural road infrastructure. This analysis highlights the technical and economic viability of integrating advanced desalination technologies with renewable energies, demonstrating their potential to address one of the most pressing environmental challenges in ensuring a reliable water supply for communities in remote areas. These findings offer a sustainable and innovative pathway to improve water scarcity and confirm the cost-effective application of renewable-energy-powered desalination solutions.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cles.2025.100177
Shedrack Thomas Mgeni , Lewis Atugonza Mtashobya , Jovine Kamuhabwa Emmanuel
The increasing global energy consumption and carbon dioxide emissions from fossil fuel burning pose a significant issue in the modern era. Alternative energy sources are now necessary due to depletion of fuels derived from petroleum sources and their associated environmental impact. Fruit wastes can be utilized to make bioethanol which have the potential to decrease pollution and carbon dioxide emissions. In this study, bioethanol from a mixture of fruit wastes was produced through fermentation and distillation process. The physical pre-treatment of fruit wastes produced a juice with an average total soluble solids content of 9.7 ± 0.06 °Brix. Fruit wastes juice was enriched with sorghum and millet flour to provide additional fermentable sugars. Fruit wastes juice mixture with millet and sorghum produced an alcohol content of 25 % for the first 100 mL aliquot while fruit wastes juice mixture without millet and sorghum yielded 22 %. This confirms the potential of millet and sorghum as an additional fermentable sugar in the production of bioethanol. Re-distillation of the first aliquots improved the quality of bioethanol to 91 % alcohol content. Bioethanol production from fruit wastes offers significant environmental advantages including reduced landfill waste and reduced emissions of greenhouse gases due to decomposition. This process enhances resource efficiency by converting low-value agricultural residues into biofuel thus, supporting circular economy. Bioethanol is a renewable energy source that reduces carbon emissions and non-renewable resource reliance, thereby promoting sustainable energy practices. The use of fruit wastes mixture rich in natural sugars, supplemented with millet and sorghum as additional fermentable sugars, has improved bioethanol yield. Additionally, the application of a range of technologies from pre-treatment, fermentation to distillation that avoid use of corrosive chemicals has contributed to improved environmental management practices.
{"title":"Bioethanol production from fruit wastes juice using millet and sorghum as additional fermentable sugar","authors":"Shedrack Thomas Mgeni , Lewis Atugonza Mtashobya , Jovine Kamuhabwa Emmanuel","doi":"10.1016/j.cles.2025.100177","DOIUrl":"10.1016/j.cles.2025.100177","url":null,"abstract":"<div><div>The increasing global energy consumption and carbon dioxide emissions from fossil fuel burning pose a significant issue in the modern era. Alternative energy sources are now necessary due to depletion of fuels derived from petroleum sources and their associated environmental impact. Fruit wastes can be utilized to make bioethanol which have the potential to decrease pollution and carbon dioxide emissions. In this study, bioethanol from a mixture of fruit wastes was produced through fermentation and distillation process. The physical pre-treatment of fruit wastes produced a juice with an average total soluble solids content of 9.7 ± 0.06 °Brix. Fruit wastes juice was enriched with sorghum and millet flour to provide additional fermentable sugars. Fruit wastes juice mixture with millet and sorghum produced an alcohol content of 25 % for the first 100 mL aliquot while fruit wastes juice mixture without millet and sorghum yielded 22 %. This confirms the potential of millet and sorghum as an additional fermentable sugar in the production of bioethanol. <em>Re</em>-distillation of the first aliquots improved the quality of bioethanol to 91 % alcohol content. Bioethanol production from fruit wastes offers significant environmental advantages including reduced landfill waste and reduced emissions of greenhouse gases due to decomposition. This process enhances resource efficiency by converting low-value agricultural residues into biofuel thus, supporting circular economy. Bioethanol is a renewable energy source that reduces carbon emissions and non-renewable resource reliance, thereby promoting sustainable energy practices. The use of fruit wastes mixture rich in natural sugars, supplemented with millet and sorghum as additional fermentable sugars, has improved bioethanol yield. Additionally, the application of a range of technologies from pre-treatment, fermentation to distillation that avoid use of corrosive chemicals has contributed to improved environmental management practices.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100177"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143288087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-22DOI: 10.1016/j.cles.2025.100174
Raihan Chowdhury , Abu Shufian , Saima Nusrat , Nur Mohammad
Agro-photovoltaic (APV) technology addresses the challenges of land-use competition by enabling simultaneous solar power generation and food production, thus mitigating potential economic, ecological, political, and social conflicts in Bangladesh's future energy landscape. This study investigates the growth and yield of shade-tolerant crops, including tomato, brinjal, green chili, lettuce, aloe vera, under shaded and non-shaded conditions. Key plant growth parameters such as height, number of leaves, flowers, fruits, and fruit weight are measured to evaluate crop performance in the APV system. The Land Equivalent Ratio (LER) is utilized to compare the efficiency of food and energy production in APV systems against traditional monoculture farming, identifying optimal crops for APV integration. Energy generation from a stand-alone APV (SAPV) system is measured and simulated using PVsyst software to optimize system performance and maximize power output. Results indicate that brinjal, lettuce, aloe vera exhibit yield advantages in the APV system, while green chili show disadvantages, and tomato demonstrates no significant difference. The SAPV system achieves an average yearly performance ratio of 75.4 % and a solar fraction (FR) of 0.914, consistently meeting energy demands with an average daily energy production of 1.157 kWh. This study highlights the feasibility of APV systems as a sustainable model for integrated food and energy production in Bangladesh, demonstrating their potential to enhance land-use efficiency and contribute to the nation's energy and agricultural resilience.
{"title":"Design of an Agro-photovoltaic system to find shade tolerant crops perspective to Bangladesh","authors":"Raihan Chowdhury , Abu Shufian , Saima Nusrat , Nur Mohammad","doi":"10.1016/j.cles.2025.100174","DOIUrl":"10.1016/j.cles.2025.100174","url":null,"abstract":"<div><div>Agro-photovoltaic (APV) technology addresses the challenges of land-use competition by enabling simultaneous solar power generation and food production, thus mitigating potential economic, ecological, political, and social conflicts in Bangladesh's future energy landscape. This study investigates the growth and yield of shade-tolerant crops, including tomato, brinjal, green chili, lettuce, aloe vera, under shaded and non-shaded conditions. Key plant growth parameters such as height, number of leaves, flowers, fruits, and fruit weight are measured to evaluate crop performance in the APV system. The Land Equivalent Ratio (LER) is utilized to compare the efficiency of food and energy production in APV systems against traditional monoculture farming, identifying optimal crops for APV integration. Energy generation from a stand-alone APV (SAPV) system is measured and simulated using PVsyst software to optimize system performance and maximize power output. Results indicate that brinjal, lettuce, aloe vera exhibit yield advantages in the APV system, while green chili show disadvantages, and tomato demonstrates no significant difference. The SAPV system achieves an average yearly performance ratio of 75.4 % and a solar fraction (FR) of 0.914, consistently meeting energy demands with an average daily energy production of 1.157 kWh. This study highlights the feasibility of APV systems as a sustainable model for integrated food and energy production in Bangladesh, demonstrating their potential to enhance land-use efficiency and contribute to the nation's energy and agricultural resilience.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100174"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-22DOI: 10.1016/j.cles.2025.100175
Peter Akhator , Bilainu Oboirien
The push to decarbonize the energy sector by incorporating renewable sources is increasing the complexity of power plant operations. One potential solution is to digitize power plants through digital twin (DT) technology, which can improve operational efficiencies and reduce maintenance costs. However, the application of DT in power plants remains in its early stages, with no existing implementations focused on gasification technology. This study aims to develop a comprehensive digital twin framework for a biomass gasification power plant with CO2 capture (DT-BGPP).
An overview of existing DT research in power plants and their classifications was conducted to assess the current state of the field and identify gaps. Based on this analysis, essential characteristics for the DT-BGPP framework were defined, leading to the identification of its main components. The classification revealed a common gap in mid-tier categories, with most available power plant Dts lacking complete bidirectional data flow with their physical counterparts. The key components of DT-BGPP include a high-order science-informed dynamic model, a data-driven model, actual data, pre-executed localized simulations, and a system genome.
Recommendations for advancing the proposed DT-BGPP include establishing connections between all framework components to achieve a fully integrated digital twin for a biomass gasification power plant with CO2 capture.
{"title":"Digitilising the energy sector: A comprehensive digital twin framework for biomass gasification power plant with CO2 capture","authors":"Peter Akhator , Bilainu Oboirien","doi":"10.1016/j.cles.2025.100175","DOIUrl":"10.1016/j.cles.2025.100175","url":null,"abstract":"<div><div>The push to decarbonize the energy sector by incorporating renewable sources is increasing the complexity of power plant operations. One potential solution is to digitize power plants through digital twin (DT) technology, which can improve operational efficiencies and reduce maintenance costs. However, the application of DT in power plants remains in its early stages, with no existing implementations focused on gasification technology. This study aims to develop a comprehensive digital twin framework for a biomass gasification power plant with CO2 capture (DT-BGPP).</div><div>An overview of existing DT research in power plants and their classifications was conducted to assess the current state of the field and identify gaps. Based on this analysis, essential characteristics for the DT-BGPP framework were defined, leading to the identification of its main components. The classification revealed a common gap in mid-tier categories, with most available power plant Dts lacking complete bidirectional data flow with their physical counterparts. The key components of DT-BGPP include a high-order science-informed dynamic model, a data-driven model, actual data, pre-executed localized simulations, and a system genome.</div><div>Recommendations for advancing the proposed DT-BGPP include establishing connections between all framework components to achieve a fully integrated digital twin for a biomass gasification power plant with CO<sub>2</sub> capture.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100175"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-19DOI: 10.1016/j.cles.2025.100173
Mary Saniya Stephen, Shibu Arkkakadavil Valsalan
Energy is an indispensable resource in the seafood processing industry. This pioneering study explores energy efficiency using Specific energy consumption (SEC) model in Kerala's seafood processing industry, shedding light on its energy dynamics amidst growing calls for conservation and cost optimization. With an average Specific Energy Consumption (SEC) of 159.2 kWh/MT and an energy cost of 965.9 INR/MT, the industry faces notable energy challenges. The study finds a moderate correlation (0.748) between production and energy consumption, and strong correlations between production and energy cost (0.763), and energy consumption and energy cost (0.992), highlighting the direct link between energy use and costs. Regression analysis confirms that SEC significantly influences energy costs, emphasizing the need for efficient energy management. The research advocates for adopting ISO 50001:2018, integrated with the Food-Energy-Water (FEW) Nexus, as a framework for optimizing energy and resource use. A customized action plan for implementing this standard in shrimp processing facilities aims to reduce consumption, cut costs, and enhance sustainability, offering a robust foundation for future energy efficiency initiatives in the sector.
{"title":"Energy efficiency and ISO 50001:2018 implementation in seafood processing industries: A comprehensive analysis and strategic framework","authors":"Mary Saniya Stephen, Shibu Arkkakadavil Valsalan","doi":"10.1016/j.cles.2025.100173","DOIUrl":"10.1016/j.cles.2025.100173","url":null,"abstract":"<div><div>Energy is an indispensable resource in the seafood processing industry. This pioneering study explores energy efficiency using Specific energy consumption (SEC) model in Kerala's seafood processing industry, shedding light on its energy dynamics amidst growing calls for conservation and cost optimization. With an average Specific Energy Consumption (SEC) of 159.2 kWh/MT and an energy cost of 965.9 INR/MT, the industry faces notable energy challenges. The study finds a moderate correlation (0.748) between production and energy consumption, and strong correlations between production and energy cost (0.763), and energy consumption and energy cost (0.992), highlighting the direct link between energy use and costs. Regression analysis confirms that SEC significantly influences energy costs, emphasizing the need for efficient energy management. The research advocates for adopting ISO 50001:2018, integrated with the Food-Energy-Water (FEW) Nexus, as a framework for optimizing energy and resource use. A customized action plan for implementing this standard in shrimp processing facilities aims to reduce consumption, cut costs, and enhance sustainability, offering a robust foundation for future energy efficiency initiatives in the sector.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100173"},"PeriodicalIF":0.0,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-13DOI: 10.1016/j.cles.2025.100172
Abu Shufian , Md Tanvir Rahman , Sowrov Komar Shib , Durjoy Roy Dipto , Shaharier Kabir , Shaikh Anowarul Fattah , Nur Mohammad , Mohammad Abdul Mannan
The twenty-first century is marked by an urgent need to combat global warming and environmental degradation, primarily driven by the extensive use of fossil fuels for energy production over the past two centuries. As the world faces the severe consequences of climate change, the transition to renewable energy (RE) has become a critical focus of sustainable development strategies. Renewable energy sources (RES) such as solar, wind, and biomass are not only environmentally friendly but also essential for achieving long-term energy security and economic stability. The importance of RE is underscored by the United Nations Sustainable Development Goals (SDGs), particularly SDG-7, which aims to ensure access to affordable, reliable, sustainable, and modern energy for all. SDG-7 highlights the necessity of increasing the share of RE in the global energy mix, improving energy efficiency, and promoting international collaboration to enhance clean energy research and technology. This research explores how Bangladesh can achieve a 100 % reliable and adaptable renewable energy (RE) output by 2050, focusing on the transition away from gas, coal, and oil-based power systems as the primary strategy for reducing fossil carbon emissions. The study examines the pathways to establishing a fully decarbonized and cost-effective energy grid in Bangladesh, emphasizing the challenges of converting the existing non-renewable power grid into a flexible and reliable RE system. From both technological and energy perspectives, the research investigates alternative methods and technologies to conventional fossil-dependent power systems and their potential to lead Bangladesh into a post-fossil fuel era. As a result, the proposed Carbon-free Advanced Power Network (CAPN) 2021–2050 model will offer the most cost-effective and environmentally friendly energy generation solution, with minimal greenhouse gas emissions and a fully carbon-free output. Intelligent energy management systems will play a key role in this transition. According to the suggested roadmap, there will be no need to construct new gas, coal, furnace oil, or nuclear power plants, and the existing fossil fuel capacity will be gradually phased out as it reaches the end of its technological lifespan.
{"title":"Perspectives and pathways to a Carbon-free Advanced Power Network (CAPN) in Bangladesh for sustainable development","authors":"Abu Shufian , Md Tanvir Rahman , Sowrov Komar Shib , Durjoy Roy Dipto , Shaharier Kabir , Shaikh Anowarul Fattah , Nur Mohammad , Mohammad Abdul Mannan","doi":"10.1016/j.cles.2025.100172","DOIUrl":"10.1016/j.cles.2025.100172","url":null,"abstract":"<div><div>The twenty-first century is marked by an urgent need to combat global warming and environmental degradation, primarily driven by the extensive use of fossil fuels for energy production over the past two centuries. As the world faces the severe consequences of climate change, the transition to renewable energy (RE) has become a critical focus of sustainable development strategies. Renewable energy sources (RES) such as solar, wind, and biomass are not only environmentally friendly but also essential for achieving long-term energy security and economic stability. The importance of RE is underscored by the United Nations Sustainable Development Goals (SDGs), particularly SDG-7, which aims to ensure access to affordable, reliable, sustainable, and modern energy for all. SDG-7 highlights the necessity of increasing the share of RE in the global energy mix, improving energy efficiency, and promoting international collaboration to enhance clean energy research and technology. This research explores how Bangladesh can achieve a 100 % reliable and adaptable renewable energy (RE) output by 2050, focusing on the transition away from gas, coal, and oil-based power systems as the primary strategy for reducing fossil carbon emissions. The study examines the pathways to establishing a fully decarbonized and cost-effective energy grid in Bangladesh, emphasizing the challenges of converting the existing non-renewable power grid into a flexible and reliable RE system. From both technological and energy perspectives, the research investigates alternative methods and technologies to conventional fossil-dependent power systems and their potential to lead Bangladesh into a post-fossil fuel era. As a result, the proposed Carbon-free Advanced Power Network (CAPN) 2021–2050 model will offer the most cost-effective and environmentally friendly energy generation solution, with minimal greenhouse gas emissions and a fully carbon-free output. Intelligent energy management systems will play a key role in this transition. According to the suggested roadmap, there will be no need to construct new gas, coal, furnace oil, or nuclear power plants, and the existing fossil fuel capacity will be gradually phased out as it reaches the end of its technological lifespan.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100172"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-11DOI: 10.1016/j.cles.2025.100171
Ratchagaraja Dhairiyasamy , Deepika Gabiriel
The increasing demand for renewable energy solutions has led to the exploration of sustainable biofuels like biogas and biodiesel for power generation. However, the combined use of these fuels in small-scale dual-fuel systems remains underexplored. This study aims to evaluate the performance of a dual-fuel diesel generator operating with waste-derived biodiesel and biogas. Biodiesel was synthesized from waste frying oil through transesterification, and biogas with a methane content of 63.5 % was sourced from an agricultural digester. A 5 kVA diesel generator was modified for dual-fuel operation and tested under varying electrical loads and biodiesel blend ratios (B8, B20, B50, B80, and B100). Results revealed that dual-fuel operation increased power output by up to 21.77 % compared to diesel-only mode and achieved liquid fuel savings of 28.74 % to 31.08 % across the blends. Efficiency in normal mode remained higher, peaking at 25.74 % for B100. The findings demonstrate the feasibility of integrating biogas and biodiesel for small-scale power generation, offering a cost-effective and sustainable alternative for off-grid applications. Future research should address emissions analysis, biogas supply optimization, and scalability for broader implementation.
{"title":"Efficient dual-mode power generation with sustainable biogas and biodiesel blends in diesel generators","authors":"Ratchagaraja Dhairiyasamy , Deepika Gabiriel","doi":"10.1016/j.cles.2025.100171","DOIUrl":"10.1016/j.cles.2025.100171","url":null,"abstract":"<div><div>The increasing demand for renewable energy solutions has led to the exploration of sustainable biofuels like biogas and biodiesel for power generation. However, the combined use of these fuels in small-scale dual-fuel systems remains underexplored. This study aims to evaluate the performance of a dual-fuel diesel generator operating with waste-derived biodiesel and biogas. Biodiesel was synthesized from waste frying oil through transesterification, and biogas with a methane content of 63.5 % was sourced from an agricultural digester. A 5 kVA diesel generator was modified for dual-fuel operation and tested under varying electrical loads and biodiesel blend ratios (B8, B20, B50, B80, and B100). Results revealed that dual-fuel operation increased power output by up to 21.77 % compared to diesel-only mode and achieved liquid fuel savings of 28.74 % to 31.08 % across the blends. Efficiency in normal mode remained higher, peaking at 25.74 % for B100. The findings demonstrate the feasibility of integrating biogas and biodiesel for small-scale power generation, offering a cost-effective and sustainable alternative for off-grid applications. Future research should address emissions analysis, biogas supply optimization, and scalability for broader implementation.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100171"},"PeriodicalIF":0.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-07DOI: 10.1016/j.cles.2025.100170
Vivek Radhakrishnan , Praveenkumar Selvapathy , Matthew Garvin , Ali Khan , Chayani Perera , Fazal Rehman , Ranuka Hansa
Evaluating project viability often relies on economic analysis with environmental impacts either evaluated subjectively in a separate analysis or not at all. The concept of the study was to express environmental impacts as cash flow equivalents through the life of the project to directly compare environmental and economic impacts in a standard cost-benefit analysis. Embodied energy accounting methodologies have been used as a novel method for converting environmental impacts of a project to monetary terms. With environmental impacts expressed in monetary terms on an annual basis, the present value of the environmental impacts could be calculated using an appropriate interest rate based on environmentally-focused investment for a similar project. Application of this method to a case study based on a recent wetland restoration project in eastern Canada demonstrated that inclusion of environmental impact valuation in the analysis of the project changes the project from a net-cost (CAN$-23.5 million) to a net-benefit (CAN$3.7 million) and providing a clear justification for the project. This method is applicable to projects with significant environmental impacts and can be used in a project approval process or for selecting between project approaches.
{"title":"Integrating environmental impacts into Cost-Benefit Analysis using emergy","authors":"Vivek Radhakrishnan , Praveenkumar Selvapathy , Matthew Garvin , Ali Khan , Chayani Perera , Fazal Rehman , Ranuka Hansa","doi":"10.1016/j.cles.2025.100170","DOIUrl":"10.1016/j.cles.2025.100170","url":null,"abstract":"<div><div>Evaluating project viability often relies on economic analysis with environmental impacts either evaluated subjectively in a separate analysis or not at all. The concept of the study was to express environmental impacts as cash flow equivalents through the life of the project to directly compare environmental and economic impacts in a standard cost-benefit analysis. Embodied energy accounting methodologies have been used as a novel method for converting environmental impacts of a project to monetary terms. With environmental impacts expressed in monetary terms on an annual basis, the present value of the environmental impacts could be calculated using an appropriate interest rate based on environmentally-focused investment for a similar project. Application of this method to a case study based on a recent wetland restoration project in eastern Canada demonstrated that inclusion of environmental impact valuation in the analysis of the project changes the project from a net-cost (CAN$-23.5 million) to a net-benefit (CAN$3.7 million) and providing a clear justification for the project. This method is applicable to projects with significant environmental impacts and can be used in a project approval process or for selecting between project approaches.</div></div>","PeriodicalId":100252,"journal":{"name":"Cleaner Energy Systems","volume":"10 ","pages":"Article 100170"},"PeriodicalIF":0.0,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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