Pub Date : 2024-12-01DOI: 10.1016/j.nexus.2024.100349
J. Yi , P.W. Gerbens-Leenes , M.M. Aldaya
Pesticides cause environmental and health risks. This study estimates the spatial-temporal dynamics of water pollution by pesticides and strategies for improvement. It uses the grey water footprint (WF) to identify the most polluting crops, hotspots and periods of increased water pollution with China as the case study area. It also proposes a temporal grey WF dimension due to pesticide degradation. The study used agricultural information for the period 2011–2015 from farmer surveys. The results showed that grey WFs were three times larger in summer than in winter. Hotspots were the North China Plain and Northeast China. Maize with herbicide (acetochlor) and insecticide (cypermethrin) use contributed most. In winter, the grey WFs in Southern regions were dominated by fungicide mancozeb use for vegetables and fruits. The temporal analysis of the grey WF due to pesticide degradation shows that the maximum daily grey WF was 66 % smaller than values based on the traditional calculation method. Moreover, replacing the most polluting pesticides, mancozeb, cypermethrin and acetochlor, can contribute to 20∼90 % of grey WF reduction across regions and months. Agriculture and policymakers can use this information to reduce pesticide-related water pollution.
{"title":"Spatial and temporal grey water footprints of agricultural pesticide use: Improved pesticide use options to decrease water pollution in China","authors":"J. Yi , P.W. Gerbens-Leenes , M.M. Aldaya","doi":"10.1016/j.nexus.2024.100349","DOIUrl":"10.1016/j.nexus.2024.100349","url":null,"abstract":"<div><div>Pesticides cause environmental and health risks. This study estimates the spatial-temporal dynamics of water pollution by pesticides and strategies for improvement. It uses the grey water footprint (WF) to identify the most polluting crops, hotspots and periods of increased water pollution with China as the case study area. It also proposes a temporal grey WF dimension due to pesticide degradation. The study used agricultural information for the period 2011–2015 from farmer surveys. The results showed that grey WFs were three times larger in summer than in winter. Hotspots were the North China Plain and Northeast China. Maize with herbicide (acetochlor) and insecticide (cypermethrin) use contributed most. In winter, the grey WFs in Southern regions were dominated by fungicide mancozeb use for vegetables and fruits. The temporal analysis of the grey WF due to pesticide degradation shows that the maximum daily grey WF was 66 % smaller than values based on the traditional calculation method. Moreover, replacing the most polluting pesticides, mancozeb, cypermethrin and acetochlor, can contribute to 20∼90 % of grey WF reduction across regions and months. Agriculture and policymakers can use this information to reduce pesticide-related water pollution.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100349"},"PeriodicalIF":8.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748305","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 : 2024-12-01DOI: 10.1016/j.nexus.2024.100344
Salim Lahmiri
The main purpose of this paper is to analyze price returns series to investigate causality between international fossil energy markets and the effect of the COVID-19 pandemic on their clustering structures. The sample period covers August 1993 to June 2023. The empirical results from Granger causality applied to tests show (i) no evidence of causality in both directions between Australian coal and Brent, and between Dubai crude oil and Australian coal, (ii) evidene of 52 unidirectional causal relationships across international fossil energy markets, and (iii) evidence of bidirectional causality between US gasoline and Brent, South African coal and Australian coal, Indonesian natural gas and Australian coal, Russian natural gas and Australian coal, and between South African coal and Russian natural gas. Besides, results from agglomerative hierarchical clustering show that the COVID-19 pandemic affected the structures in the clusters in fossil energy markets and increased the similarity between them. Overall, we provide insights about the connectedness and clustering among major international fossil energy markets to highlight important system dynamics that could be helpful for policy makers, traders and investors.
{"title":"The nexus between fossil energy markets and the effect of the COVID-19 pandemic on clustering structures","authors":"Salim Lahmiri","doi":"10.1016/j.nexus.2024.100344","DOIUrl":"10.1016/j.nexus.2024.100344","url":null,"abstract":"<div><div>The main purpose of this paper is to analyze price returns series to investigate causality between international fossil energy markets and the effect of the COVID-19 pandemic on their clustering structures. The sample period covers August 1993 to June 2023. The empirical results from Granger causality applied to tests show (<em>i</em>) no evidence of causality in both directions between Australian coal and Brent, and between Dubai crude oil and Australian coal, (<em>ii</em>) evidene of 52 unidirectional causal relationships across international fossil energy markets, and (<em>iii</em>) evidence of bidirectional causality between US gasoline and Brent, South African coal and Australian coal, Indonesian natural gas and Australian coal, Russian natural gas and Australian coal, and between South African coal and Russian natural gas. Besides, results from agglomerative hierarchical clustering show that the COVID-19 pandemic affected the structures in the clusters in fossil energy markets and increased the similarity between them. Overall, we provide insights about the connectedness and clustering among major international fossil energy markets to highlight important system dynamics that could be helpful for policy makers, traders and investors.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100344"},"PeriodicalIF":8.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748307","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 : 2024-12-01DOI: 10.1016/j.nexus.2024.100352
Lin Zhang
The introduction of the term “new quality productive forces” (NQPF) in China signals its move towards cutting-edge technologies and innovation as the new drivers of economic growth. As it shifts from labor-tensive sectors towards advanced industries, the energy sector is also expected to experience significant regime switch. This paper discusses how the new term articulated by the top leadership will reshape China’s energy sector including its labor, technology, critical resource supply, and the industrial value chain. The development of NQPF not only affects labor landscape and technology development, but also bring about significant change in the industrial value chain in China’s energy sector. I summarize that NQPF refers to high-tech driven, and sustainability-oriented productivity with more radical rather than incremental innovation. Overall, the energy sector is the key domain for creating NQPF for high-quality economic growth and the new forces act as a significant catalyst in transforming the energy sector towards achieving green, low-carbon, and sustainable development.
{"title":"Understanding the new quality productive forces in the energy sector","authors":"Lin Zhang","doi":"10.1016/j.nexus.2024.100352","DOIUrl":"10.1016/j.nexus.2024.100352","url":null,"abstract":"<div><div>The introduction of the term “new quality productive forces” (NQPF) in China signals its move towards cutting-edge technologies and innovation as the new drivers of economic growth. As it shifts from labor-tensive sectors towards advanced industries, the energy sector is also expected to experience significant regime switch. This paper discusses how the new term articulated by the top leadership will reshape China’s energy sector including its labor, technology, critical resource supply, and the industrial value chain. The development of NQPF not only affects labor landscape and technology development, but also bring about significant change in the industrial value chain in China’s energy sector. I summarize that NQPF refers to high-tech driven, and sustainability-oriented productivity with more radical rather than incremental innovation. Overall, the energy sector is the key domain for creating NQPF for high-quality economic growth and the new forces act as a significant catalyst in transforming the energy sector towards achieving green, low-carbon, and sustainable development.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100352"},"PeriodicalIF":8.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748306","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 : 2024-11-27DOI: 10.1016/j.nexus.2024.100343
Salim Lahmiri
In this paper, we examine market efficiency in fossil energy and gold markets. Specifically, we study price disorder and information content in various energy markets and in gold market before and during the COVID-19 pandemic. The set of energy markets include West Texas Intermediate (WTI), Brent, natural gas, heating oil, and gasoline. For each market, we estimated the correlation dimension, Lyapunov exponent, and approximate entropy for periods before and during the pandemic. In this regard, we contribute to the literature by using different nonlinear features to provide a rich description of the nonlinear dynamics in price evolution before and during the pandemic, considering five various energy and gold markets, and examining a longer and recent period spanning from November 2017 to November 2022. The empirical results show that, during the pandemic, complexity increased in gold and natural gas markets, stability strongly decreased in WTI and natural gas markets, and irregularity obviously increased in gold market but decreased in all energy markets. Besides, heating oil and gasoline markets appear to be unaffected by the COVID-19 pandemic especially in terms of complexity and stability compared to WTI, Brent, and gas markets. We conclude that the gold market maybe not attractive compared to energy markets for investors and traders during the pandemic. Besides, heating oil and gasoline markets offer interesting investment opportunities during the world economic downturn caused the outbreak of the pandemic.
{"title":"Price disorder and information content in energy and gold markets: The effect of the COVID-19 pandemic","authors":"Salim Lahmiri","doi":"10.1016/j.nexus.2024.100343","DOIUrl":"10.1016/j.nexus.2024.100343","url":null,"abstract":"<div><div>In this paper, we examine market efficiency in fossil energy and gold markets. Specifically, we study price disorder and information content in various energy markets and in gold market before and during the COVID-19 pandemic. The set of energy markets include West Texas Intermediate (WTI), Brent, natural gas, heating oil, and gasoline. For each market, we estimated the correlation dimension, Lyapunov exponent, and approximate entropy for periods before and during the pandemic. In this regard, we contribute to the literature by using different nonlinear features to provide a rich description of the nonlinear dynamics in price evolution before and during the pandemic, considering five various energy and gold markets, and examining a longer and recent period spanning from November 2017 to November 2022. The empirical results show that, during the pandemic, complexity increased in gold and natural gas markets, stability strongly decreased in WTI and natural gas markets, and irregularity obviously increased in gold market but decreased in all energy markets. Besides, heating oil and gasoline markets appear to be unaffected by the COVID-19 pandemic especially in terms of complexity and stability compared to WTI, Brent, and gas markets. We conclude that the gold market maybe not attractive compared to energy markets for investors and traders during the pandemic. Besides, heating oil and gasoline markets offer interesting investment opportunities during the world economic downturn caused the outbreak of the pandemic.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100343"},"PeriodicalIF":8.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723784","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 : 2024-11-26DOI: 10.1016/j.nexus.2024.100339
Pallavi Punia, Sumeet Kumar
Biofuel, a sustainable fuel source, is crucial in the modern day as it reduces reliance on non-renewable energy sources and helps to reduce CO2 emissions. The manufacture of biofuels on a wide scale is a difficult process due to the numerous limitations in current technology and the subsequent rise in expenses. Moreover, the processes employed to transform diverse raw materials into the desired biofuel may differ depending on the particular methodologies and substances utilized. The global demand for bioethanol is growing as countries throughout the world enforce legislation requiring the blending of bioethanol with gasoline. Second-generation bioethanol derived from lignocellulosic biomass is rapidly gaining prominence. The biochemical conversion process has various technical, practical, and economic challenges such as pre-treatment, hydrolysis, and fermentation. Nanoparticles (NPs) offer a highly efficient solution for overcoming current challenges in utilizing biomass, thanks to their selectivity, energy efficiency, and time management capabilities, all while reducing prices. Also, the biotechnological significant advancement in revolutionized the sorghum varieties or strains to enhance the yield of ethanol. This article offers a succinct summary of bioethanol from sweet sorghum feedstock and the progress made in using nanotechnology to produce them, with a specific focus on the enzyme immobilization approach. The text offers an in-depth exploration of how nanotechnology is utilized across ethanol production, with a specific focus on comprehending the process by which enzymes immobilized on nanoparticles interact with lignocellulose to enhance the output of ethanol.
{"title":"A critical review on enhanced bioethanol production from sweet sorghum using nanotechnology","authors":"Pallavi Punia, Sumeet Kumar","doi":"10.1016/j.nexus.2024.100339","DOIUrl":"10.1016/j.nexus.2024.100339","url":null,"abstract":"<div><div>Biofuel, a sustainable fuel source, is crucial in the modern day as it reduces reliance on non-renewable energy sources and helps to reduce CO<sub>2</sub> emissions. The manufacture of biofuels on a wide scale is a difficult process due to the numerous limitations in current technology and the subsequent rise in expenses. Moreover, the processes employed to transform diverse raw materials into the desired biofuel may differ depending on the particular methodologies and substances utilized. The global demand for bioethanol is growing as countries throughout the world enforce legislation requiring the blending of bioethanol with gasoline. Second-generation bioethanol derived from lignocellulosic biomass is rapidly gaining prominence. The biochemical conversion process has various technical, practical, and economic challenges such as pre-treatment, hydrolysis, and fermentation. Nanoparticles (NPs) offer a highly efficient solution for overcoming current challenges in utilizing biomass, thanks to their selectivity, energy efficiency, and time management capabilities, all while reducing prices. Also, the biotechnological significant advancement in revolutionized the sorghum varieties or strains to enhance the yield of ethanol. This article offers a succinct summary of bioethanol from sweet sorghum feedstock and the progress made in using nanotechnology to produce them, with a specific focus on the enzyme immobilization approach. The text offers an in-depth exploration of how nanotechnology is utilized across ethanol production, with a specific focus on comprehending the process by which enzymes immobilized on nanoparticles interact with lignocellulose to enhance the output of ethanol.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"17 ","pages":"Article 100339"},"PeriodicalIF":8.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757268","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 : 2024-11-26DOI: 10.1016/j.nexus.2024.100350
Wesly Jean , Marcel Bursztyn , Elton S. Oliveira , Júlia Lopes , Guadalupe Sátiro , Saulo Rodrigues Filho , Diego Lindoso , Juliana Dalboni Rocha , Daniela Nogueira
Energy security refers to the continuous and reliable access to energy sources at an affordable cost. In rural areas, particularly in Brazil's semi-arid regions, this security is essential for the survival and development of communities. This research analyzes energy security levels and their interfaces with water, food and socioecological security. The nexus+ approach has been used as a theoretical framework. This case study focuses on a settlement of small-scale family farmers in the semiarid region of northeastern Brazil. An extensive literature review on energy security and energy transition was carried out. Four pilot agri-villages were considered. The methodology of this study employs a multi-criteria analysis using the analytical hierarchy process (AHP). This approach supports decision-making across various criteria, both quantitative and qualitative. Additionally, QGIS software was utilized to create thematic maps by categorizing defined classes and using the raster calculator function. To determine the degree of energy security in each agri-village, five classes were defined. Among the scenarios analyzed, the main results indicate that three of the four agro-villages analyzed have very low levels of energy security. Only one of the agri-villages showed a satisfactory level of energy security. These findings are consistent with trends observed in other similar studies in the region. The study concluded that measures involving the use of renewable energies, such as solar energy, can increase energy security. This is crucial for guaranteeing sustainable irrigated agriculture and, as a result, food security, ultimately contributing to improving the family income of socially, economically, and environmentally vulnerable populations.
{"title":"Energy security assessment in rural communities in Brazil: A contribution to public policies","authors":"Wesly Jean , Marcel Bursztyn , Elton S. Oliveira , Júlia Lopes , Guadalupe Sátiro , Saulo Rodrigues Filho , Diego Lindoso , Juliana Dalboni Rocha , Daniela Nogueira","doi":"10.1016/j.nexus.2024.100350","DOIUrl":"10.1016/j.nexus.2024.100350","url":null,"abstract":"<div><div>Energy security refers to the continuous and reliable access to energy sources at an affordable cost. In rural areas, particularly in Brazil's semi-arid regions, this security is essential for the survival and development of communities. This research analyzes energy security levels and their interfaces with water, food and socioecological security. The <em>nexus+ approach</em> has been used as a theoretical framework. This case study focuses on a settlement of small-scale family farmers in the semiarid region of northeastern Brazil. An extensive literature review on energy security and energy transition was carried out. Four pilot agri-villages were considered. The methodology of this study employs a multi-criteria analysis using the analytical hierarchy process (AHP). This approach supports decision-making across various criteria, both quantitative and qualitative. Additionally, QGIS software was utilized to create thematic maps by categorizing defined classes and using the raster calculator function. To determine the degree of energy security in each agri-village, five classes were defined. Among the scenarios analyzed, the main results indicate that three of the four agro-villages analyzed have very low levels of energy security. Only one of the agri-villages showed a satisfactory level of energy security. These findings are consistent with trends observed in other similar studies in the region. The study concluded that measures involving the use of renewable energies, such as solar energy, can increase energy security. This is crucial for guaranteeing sustainable irrigated agriculture and, as a result, food security, ultimately contributing to improving the family income of socially, economically, and environmentally vulnerable populations.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"17 ","pages":"Article 100350"},"PeriodicalIF":8.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745792","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 : 2024-11-26DOI: 10.1016/j.nexus.2024.100347
Abdalla Mahmoud Salim , Saleh Abu Dabous
Successful planning and implementation of solar home systems (SHS) remains a significant challenge for government agencies, particularly from economic and sustainability perspectives. This study aims to develop a stakeholder-based framework for evaluating SHS programs in the public housing sector of the United Arab Emirates (UAE). A mixed-method approach was employed, incorporating both qualitative and quantitative data collection. A comprehensive review of SHS was conducted to identify the main global success factors for implementing the system in public housing projects. Subsequently, a structured questionnaire was distributed to 56 specialized participants comprising institutional stakeholders involved in SHS implementation in the UAE, leading to the identification of the critical success factors (CSF). Furthermore, 24 domain experts validated the data through focused group interviews. The findings indicate that the success of SHS programs is significantly influenced by regional factors, with stakeholders playing a pivotal role in defining the success factors. The research identified 44 potential CSFs, categorized into six fundamental groups: political, economic, technical, social, environmental, and marketing. Among these, economic factors were the most significant in the UAE, followed by technical, political, environmental, marketing, and social aspects. Government support was identified as the most CSF, followed by annual savings, maintenance and monitoring, installation quality, and payback period. The proposed framework emphasizes the government's role as the primary stakeholder, guiding the evaluation of success based on specific goals and performance metrics. Each stakeholder's unique success factors are weighted to reflect their importance, and the analytic hierarchy process (AHP) method is employed to derive key performance indicators (KPI) for consistent success measurement. This study provides a robust tool for stakeholders to assess and compare the success of different SHS programs by considering region-specific factors. It is intended to help UAE policymakers and government authorities make decisions, ensuring more effective SHS implementation, with the potential to be applied in the other Gulf Cooperation Council Countries that share similar environmental, economic, and political conditions.
{"title":"Framework for evaluating the successful implementation of solar home systems in public housing projects in the United Arab Emirates","authors":"Abdalla Mahmoud Salim , Saleh Abu Dabous","doi":"10.1016/j.nexus.2024.100347","DOIUrl":"10.1016/j.nexus.2024.100347","url":null,"abstract":"<div><div>Successful planning and implementation of solar home systems (SHS) remains a significant challenge for government agencies, particularly from economic and sustainability perspectives. This study aims to develop a stakeholder-based framework for evaluating SHS programs in the public housing sector of the United Arab Emirates (UAE). A mixed-method approach was employed, incorporating both qualitative and quantitative data collection. A comprehensive review of SHS was conducted to identify the main global success factors for implementing the system in public housing projects. Subsequently, a structured questionnaire was distributed to 56 specialized participants comprising institutional stakeholders involved in SHS implementation in the UAE, leading to the identification of the critical success factors (CSF). Furthermore, 24 domain experts validated the data through focused group interviews. The findings indicate that the success of SHS programs is significantly influenced by regional factors, with stakeholders playing a pivotal role in defining the success factors. The research identified 44 potential CSFs, categorized into six fundamental groups: political, economic, technical, social, environmental, and marketing. Among these, economic factors were the most significant in the UAE, followed by technical, political, environmental, marketing, and social aspects. Government support was identified as the most CSF, followed by annual savings, maintenance and monitoring, installation quality, and payback period. The proposed framework emphasizes the government's role as the primary stakeholder, guiding the evaluation of success based on specific goals and performance metrics. Each stakeholder's unique success factors are weighted to reflect their importance, and the analytic hierarchy process (AHP) method is employed to derive key performance indicators (KPI) for consistent success measurement. This study provides a robust tool for stakeholders to assess and compare the success of different SHS programs by considering region-specific factors. It is intended to help UAE policymakers and government authorities make decisions, ensuring more effective SHS implementation, with the potential to be applied in the other Gulf Cooperation Council Countries that share similar environmental, economic, and political conditions.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"17 ","pages":"Article 100347"},"PeriodicalIF":8.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757269","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}
This article explores the impact of Additive Manufacturing (AM) on business models in the context of manufacturing sustainability. We define two new standards of sustainable business models enabled by AM and discuss their potential advantages in addressing specific manufacturing challenges. The technological advancements brought about by AM have significantly influenced the manufacturing industry, fostering innovation and reshaping market structures and value-creation processes. Notably, AM contributes to sustainability by reducing material waste and transportation costs, establishing itself as a low-impact manufacturing technology. While AM is not positioned to entirely replace traditional manufacturing processes, organizations can leverage its integration with these processes to catalyze business model innovation. To expand the market for AM technologies, it is crucial to examine AM not only from a process and technology perspective but also in terms of its ability to eliminate the need for tooling and dies, which are typically produced through energy-intensive methods. Advanced manufacturing techniques can significantly reduce greenhouse gas emissions, pollution, and time to market, demonstrating AM's potential energy-saving benefits across various sectors.
本文探讨了增材制造（AM）在制造业可持续发展背景下对商业模式的影响。我们定义了两种由增材制造实现的可持续商业模式新标准，并讨论了它们在应对特定制造业挑战方面的潜在优势。增材制造带来的技术进步极大地影响了制造业，促进了创新，重塑了市场结构和价值创造流程。值得注意的是，AM 通过减少材料浪费和降低运输成本，为可持续发展做出了贡献，成为一种低影响制造技术。虽然 AM 无法完全取代传统制造工艺，但企业可以利用其与这些工艺的整合来促进商业模式创新。要想扩大 AM 技术的市场，不仅要从流程和技术的角度来审视 AM，还要从其消除对模具和冲模的需求的能力的角度来审视 AM，因为模具和冲模通常是通过能源密集型方法生产的。先进的制造技术可以大大减少温室气体排放、污染和上市时间，这表明了 AM 在各行各业潜在的节能优势。
{"title":"Business Models and Advanced Additive Manufacturing strategies for better sustainability","authors":"Fabrizia Devito , Giacomo Copani , Angelo Natalicchio , Abdul Hai Alami , Fulvio Lavecchia , Abdul-Ghani Olabi , Michele Dassisti","doi":"10.1016/j.nexus.2024.100337","DOIUrl":"10.1016/j.nexus.2024.100337","url":null,"abstract":"<div><div>This article explores the impact of Additive Manufacturing (AM) on business models in the context of manufacturing sustainability. We define two new standards of sustainable business models enabled by AM and discuss their potential advantages in addressing specific manufacturing challenges. The technological advancements brought about by AM have significantly influenced the manufacturing industry, fostering innovation and reshaping market structures and value-creation processes. Notably, AM contributes to sustainability by reducing material waste and transportation costs, establishing itself as a low-impact manufacturing technology. While AM is not positioned to entirely replace traditional manufacturing processes, organizations can leverage its integration with these processes to catalyze business model innovation. To expand the market for AM technologies, it is crucial to examine AM not only from a process and technology perspective but also in terms of its ability to eliminate the need for tooling and dies, which are typically produced through energy-intensive methods. Advanced manufacturing techniques can significantly reduce greenhouse gas emissions, pollution, and time to market, demonstrating AM's potential energy-saving benefits across various sectors.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100337"},"PeriodicalIF":8.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698198","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 : 2024-11-01DOI: 10.1016/j.nexus.2024.100336
Ashish Alex , Anil Raj Kizha , Libin T. Louis , Alex K. George
Woody biomass has tremendous potential to reduce the reliance on non-renewable energy, however, the high cost, uncertain harvesting carbon footprint, and policies may hinder it from becoming a predominant component of the US renewable energy sector, particularly in the Northeast. The objectives of this study were to a) assess productivity (m3 PMH−1) and cost ($ m−3) of a stump-to-truck integrated timber harvesting operation; b) identify and evaluate major factors affecting operational productivity and cost; and c) quantify carbon footprint of the harvesting operation. Detailed time and motion studies were conducted in a softwood dominated forest stand in upstate New York, during the summer of 2021. Stump-to-truck life cycle assessment (LCA) of roundwood harvesting and wood chips production was quantified using USLCI and US-EI 2.2 databases and TRACI method in Simapro 9.3.0.3 software. The functional units were 1 m3 of green roundwood (50 % moisture content) and 1 tonne of green wood chips (moisture content 50 %). The results showed that the harvesting cost was $12.98 m−3 and $7.40 tonne−1 for roundwood and wood chips, respectively. Grapple skidder had the lowest productivity (m3 PMH−1) and the highest carbon footprint. The carbon footprint of stump-to-truck timber harvesting operation accounted for 0.726 kg CO2 eq m−3 and 0.818 kg CO2 eq tonne−1 for roundwood and wood chips, respectively. The chipping cost was $7.40 tonne−1. The harvesting cost decreased by 4.5 % when self-loading truck was used instead of a loader. Estimating operating cost and carbon footprint of integrated timber harvesting operations is essential to promote the forest residues as a major contributor of bioenergy in the changing scenarios of climate.
{"title":"Production economics and carbon footprint of an integrated timber harvesting operation in the Northeastern US","authors":"Ashish Alex , Anil Raj Kizha , Libin T. Louis , Alex K. George","doi":"10.1016/j.nexus.2024.100336","DOIUrl":"10.1016/j.nexus.2024.100336","url":null,"abstract":"<div><div>Woody biomass has tremendous potential to reduce the reliance on non-renewable energy, however, the high cost, uncertain harvesting carbon footprint, and policies may hinder it from becoming a predominant component of the US renewable energy sector, particularly in the Northeast. The objectives of this study were to a) assess productivity (m<sup>3</sup> PMH<sup>−1</sup>) and cost ($ m<sup>−3</sup>) of a stump-to-truck integrated timber harvesting operation; b) identify and evaluate major factors affecting operational productivity and cost; and c) quantify carbon footprint of the harvesting operation. Detailed time and motion studies were conducted in a softwood dominated forest stand in upstate New York, during the summer of 2021. Stump-to-truck life cycle assessment (LCA) of roundwood harvesting and wood chips production was quantified using USLCI and US-EI 2.2 databases and TRACI method in Simapro 9.3.0.3 software. The functional units were 1 m<sup>3</sup> of green roundwood (50 % moisture content) and 1 tonne of green wood chips (moisture content 50 %). The results showed that the harvesting cost was $12.98 m<sup>−3</sup> and $7.40 tonne<sup>−1</sup> for roundwood and wood chips, respectively. Grapple skidder had the lowest productivity (m<sup>3</sup> PMH<sup>−1</sup>) and the highest carbon footprint. The carbon footprint of stump-to-truck timber harvesting operation accounted for 0.726 kg CO<sub>2</sub> eq m<sup>−3</sup> and 0.818 kg CO<sub>2</sub> eq tonne<sup>−1</sup> for roundwood and wood chips, respectively. The chipping cost was $7.40 tonne<sup>−1</sup>. The harvesting cost decreased by 4.5 % when self-loading truck was used instead of a loader. Estimating operating cost and carbon footprint of integrated timber harvesting operations is essential to promote the forest residues as a major contributor of bioenergy in the changing scenarios of climate.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100336"},"PeriodicalIF":8.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572772","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 : 2024-10-24DOI: 10.1016/j.nexus.2024.100335
Josef Marousek , Beata Gavurova , Anna Marouskova
In most current academic thinking, the prevailing consensus underscores the potential of algae as a promising biochar feedstock. Nevertheless, a significant gap exists in the literature, as most assertions conducted outside tropical and subtropical regions lack substantiation through comprehensive analyses on a comparison of the economic benefits and the costs associated with the application of algae biochar is mostly missing. This study reports a meticulous breakdown of production costs for algae biochar derived from 6 various cultivation systems via 2 harvesting techniques under the conditions characteristic of central Europe. The findings revealed that the production costs of the algae biochars always greater than 110 €.kg−1that is much higher than the selling prices of the most common biochars on the market including the most expensive biochars made of hard woods. To achieve social acceptability, it is recommended to prefer higher value-added applications for algae and to implement biochar production as the final stage of the refining process.
{"title":"Cost breakdown indicates that biochar production from microalgae in Central Europe requires innovative cultivation procedures","authors":"Josef Marousek , Beata Gavurova , Anna Marouskova","doi":"10.1016/j.nexus.2024.100335","DOIUrl":"10.1016/j.nexus.2024.100335","url":null,"abstract":"<div><div>In most current academic thinking, the prevailing consensus underscores the potential of algae as a promising biochar feedstock. Nevertheless, a significant gap exists in the literature, as most assertions conducted outside tropical and subtropical regions lack substantiation through comprehensive analyses on a comparison of the economic benefits and the costs associated with the application of algae biochar is mostly missing. This study reports a meticulous breakdown of production costs for algae biochar derived from 6 various cultivation systems via 2 harvesting techniques under the conditions characteristic of central Europe. The findings revealed that the production costs of the algae biochars always greater than 110 €.kg<sup>−1</sup>that is much higher than the selling prices of the most common biochars on the market including the most expensive biochars made of hard woods. To achieve social acceptability, it is recommended to prefer higher value-added applications for algae and to implement biochar production as the final stage of the refining process.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"16 ","pages":"Article 100335"},"PeriodicalIF":8.0,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572773","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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