Cleaner Environmental Systems最新文献

{"title":"Revisiting the challenges of ozone depletion in life cycle assessment","authors":"Anne E.M. van den Oever ,&nbsp;Stefano Puricelli ,&nbsp;Daniele Costa ,&nbsp;Nils Thonemann ,&nbsp;Maeva Lavigne Philippot ,&nbsp;Maarten Messagie","doi":"10.1016/j.cesys.2024.100196","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100196","url":null,"abstract":"<div><p>Recent works have highlighted the interconnected impacts of stratospheric ozone depletion, ultraviolet (UV) radiation, and climate change on various sectors, including water quality, agriculture, human health, and biodiversity. Increased UV-B exposure has diverse environmental impacts, including potential benefits like enhanced plant resistance and reduced vitamin D deficiency. However, the quantification of these effects remains incomplete. Life Cycle Assessment (LCA) serves to quantify the environmental impacts of product systems. This article revisits challenges related to ozone depletion in LCA by reviewing 15 Life Cycle Impact Assessment (LCIA) methods. It is shown that the currently available LCA ozone depletion practices are outdated. The combined effects of outdated background databases and incomplete impact assessment methods must be further investigated. Collaboration with atmospheric scientists and expansion of substances covered by characterization models are required. The study emphasizes the need to address interlinkages between impact categories and recommends climate scenario-dependent characterization for robust decision-making in an uncertain world.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100196"},"PeriodicalIF":5.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000345/pdfft?md5=590861f5a34f8875655e5b1a71685f4c&pid=1-s2.0-S2666789424000345-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141083635","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}

{"title":"Multiscale spatiotemporal characterisation of embodied environmental performance of building structures in Geneva from 1850 to 2018","authors":"Corentin Fivet ,&nbsp;Catherine De Wolf ,&nbsp;Thibaut Menny ,&nbsp;Serena Vanbutsele ,&nbsp;André Stephan","doi":"10.1016/j.cesys.2024.100194","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100194","url":null,"abstract":"<div><p>Load-bearing systems in buildings, significant in material use and embodied greenhouse gas emissions (EGHGE), have lacked detailed analysis on their environmental and functional relationships over time and space. This study evaluates the environmental impacts of building structures in Geneva, Switzerland, considering factors like material usage, EGHGE, and urban development. A new method using a similarity-weighted function projects environmental impacts onto a GIS-based building stock, analysing 48 archetypal and 84,477 stock buildings built from 1850 to 2018. Results show a 37% reduction in structural volume per floor area and a 10% increase in mass over time. Buildings predating the masonry-to-concrete transition would produce 7% more EGHGE if constructed today. Multi-residential buildings emit 14% less EGHGE than single homes. A new indicator amortizes upfront environmental effects over a building's lifespan, aiding in historical comparisons of building stocks. This approach underscores the need for spatial-temporal environmental impact mapping to understand sustainable urban development dynamics.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100194"},"PeriodicalIF":5.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000321/pdfft?md5=6566e6c44f94166bf5383fb2f10d676f&pid=1-s2.0-S2666789424000321-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141097383","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}

{"title":"Technical-economic and environmental assessment of marine biofuels produced in Brazil","authors":"Lucas Cesilla de Souza,&nbsp;Joaquim Eugênio Abel Seabra","doi":"10.1016/j.cesys.2024.100195","DOIUrl":"10.1016/j.cesys.2024.100195","url":null,"abstract":"<div><p>This study compared the technical-economic and life cycle environmental (LCA) performance of a bulk carrier, powered by different biofuels that could potentially be produced in Brazil, with a ship powered by low-sulfur fuel oil (LSFO). Six biofuel pathways and two power systems (two-stroke diesel engine and solid oxide fuel cell) were evaluated. The technical-economic assessment estimated the minimum fuel selling price (MFSP), and the impacts on the levelized cost of shipping (LCOS). All biofuels showed reductions ranging from 63.12% to 89.98% in GHG emissions per t.km compared to LSFO. Biofuels also performed better in terms of fine particulate matter formation and fossil resource scarcity, while results for the other environmental categories varied according to the production pathway. From an economic perspective, all biofuels showed higher MFSP (2.46–3.75 times) and LCOS (1.58–3.08 times) compared to LSFO. The results showed the potential of biofuels to reduce the carbon footprint and the economic challenges to overcome. In this sense, governmental programs and incentives can allow marine biofuels bridge the competitivity gap with fossil fuels. In the short-term, the adoption of different strategies, such as offsetting schemes, may be necessary for the international shipping decarbonization.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100195"},"PeriodicalIF":5.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000333/pdfft?md5=e58f193bfafd1e8e8a2834e4e123e640&pid=1-s2.0-S2666789424000333-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141042560","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}

{"title":"Advancing urban water autonomy: A Social Life Cycle Assessment of rainwater harvesting systems in Mexico City","authors":"Raúl Castelán-Cabañas ,&nbsp;Alejandro Padilla-Rivera ,&nbsp;Carlos Muñoz-Villarreal ,&nbsp;Leonor Patricia Güereca-Hernández","doi":"10.1016/j.cesys.2024.100193","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100193","url":null,"abstract":"<div><p>This study conducts a Social Life Cycle Assessment (S-LCA) of Rainwater Harvesting Systems (RWHS) in Mexico City to evaluate their social performance. Given the city's pressing water scarcity, RWHS have become critical for promoting water autonomy and sustainable urban development. The research integrates quantitative data from surveys and interviews with RWHS users and organizational employees, along with qualitative analysis using the Product Social Impact Assessment (PSIA) approach. This methodology allows for a thorough examination of socio-environmental dynamics influenced by RWHS adoption. Our findings show high acceptance of RWHS among users and highlight progressive labor practices, underscoring RWHS's potential to transform urban water management. This study, the first to evaluate this ecotechnology through an S-LCA, identifies the need for a multidimensional approach to understand socio-economic and environmental intersections with water systems. It also underscores NGOs' role in facilitating technology transfer and adoption in urban communities. Recommendations include extending the S-LCA methodology to cover the entire RWHS lifecycle and incorporating broader social science theories to deepen understanding of water sustainability interventions. The results offer new insights into RWHS assessment, emphasizing the complexities of deploying decentralized water technologies in a mega-city and laying groundwork for policy recommendations that support sustainable, equitable water access.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100193"},"PeriodicalIF":5.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266678942400031X/pdfft?md5=b1ef8b5c3c1eb641e41aa99a28d5c0ab&pid=1-s2.0-S266678942400031X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140951630","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}

{"title":"Circular production operations – A management system's framework for seamless transition from linear to circular","authors":"Emma Lindahl","doi":"10.1016/j.cesys.2024.100191","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100191","url":null,"abstract":"<div><p>Production companies’ ambition to reach sustainable development goals, has resulted in a rapid strategic movement towards circularity in production. Previous studies have indicated that a transition to circular production is affirmed and a prioritised action. However, few studies describe how to operate a circular production, and how to perform the transition from linear to circular. To fill this gap, this paper aims to explore strategies for a seamless transition and to add new knowledge in this area. A multiple case study was employed for this purpose, based on production companies located in Sweden. Collected data were analysed by an inductive coding process. The coding process generated managerial themes that characterise the transition process in production operations. From the themes, three main incubators: management systems, standards and strategy, form together with drivers and blockers a framework called Integrated Circularity Management Systems (ICMS). The research presented in this study adds new knowledge to the field of circular production operations management as well as gives practical guidance for decision-makers in the manufacturing industry on how to initiate a circularity transition in an established production system.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100191"},"PeriodicalIF":5.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000291/pdfft?md5=fd4db034643050e22583fcd79f2f24b4&pid=1-s2.0-S2666789424000291-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140820122","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}

{"title":"Comparison of the environmental impacts of heating systems in Chile by life cycle assessment","authors":"Adrián-Enrique Ortiz-Rojas ,&nbsp;Ismaela Magliotto-Quevedo ,&nbsp;Leonardo Guerra ,&nbsp;Carlos Gaete-Morales ,&nbsp;Paula Guerra ,&nbsp;Camila Mery-Araya","doi":"10.1016/j.cesys.2024.100192","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100192","url":null,"abstract":"<div><p>The present study conducts a Life Cycle Assessment (LCA) to evaluate the environmental impacts of heating technologies commonly used in Chile based on six environmental indicators: Climate Change (CC), Human Toxicity (HT), Formation of Particulate Matter (PM), Formation of Photochemical Oxidants (PO), Ozone Destruction (OD), and Water Depletion (WD). Due to the extensive length of the territory studied, it is demonstrated that the environmental impacts depend on the geographical location where the heating equipment is used. Stoves that use wet firewood presented the highest environmental impact in CC, PM, HT, and PO. Using dry firewood could reduce pollution by 14%–81%, compared to wet firewood. Replacing wood heating with natural gas, LPG, and kerosene stoves reduces the CC and HT indicators. On the other hand, switching to electric heating, such as split inverter heat pumps, could transfer these impacts to areas where electricity is generated using coal. When the pellet is a byproduct of the forestry industry and transportation distances are not very high, the pellet stove stands out for its lower CC. In Magallanes, electric heating appears environmentally attractive due to using natural gas for electricity generation.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100192"},"PeriodicalIF":5.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000308/pdfft?md5=bd094b47f61269b5fb3dffe1cb2634f3&pid=1-s2.0-S2666789424000308-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140879686","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}

{"title":"Analysis of urban metabolism in an informal settlement using the MuSIASEM method in Lima","authors":"Alejandra Acevedo-De-los-Ríos ,&nbsp;Favio R. Chumpitaz-Requena ,&nbsp;Daniel R. Rondinel-Oviedo","doi":"10.1016/j.cesys.2024.100189","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100189","url":null,"abstract":"<div><p>By 2050, 68% of the global population will reside in cities, driving rapid urban growth and intensifying demand for scarce ecological resources within the Water-Food-Energy nexus. Social metabolism quantifies energy and material transformations with a social focus, building upon urban metabolism. Its application in resource-scarce informal settlements (ISs) has the potential to enhance their sustainability significantly. As community dynamics evolve, acknowledging society as a dynamic variable within this framework becomes increasingly relevant. Our study employs the Multi-Scale Integrated Analysis of Societal and Ecosystem Metabolism (MuSIASEM) framework, focusing on key variables: human activity, land use, money, energy, water, waste, and food. Based on surveys, interviews, GIS datasets, and statistical information, the study investigates the Ciudad de Gosen IS in Lima, Peru. The results show that, in the socio-economic dimension, 43% of the time employed is directed to the unpaid work sector. Notably, 71% of women and 29% of men spend a mean of 44 h/week/person caring for children or elderly. In the paid work sector, there are gender asymmetries; men have a salary 54% higher than women. In the ecological dimension, more than 78% of the homes have access to basic services, unlike other informal settlements in Latin America and Africa.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100189"},"PeriodicalIF":5.0,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000278/pdfft?md5=f235f1d68f08468a995ecf3f4051bad1&pid=1-s2.0-S2666789424000278-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140823108","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}

{"title":"Life cycle assessment of food consumption in different cities: Analysis of socioeconomic level and environmental hotspots","authors":"Francisca Riveros ,&nbsp;Camila López-Eccher ,&nbsp;Edmundo Muñoz","doi":"10.1016/j.cesys.2024.100190","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100190","url":null,"abstract":"&lt;div&gt;&lt;p&gt;This study presents a comprehensive life cycle assessment of the environmental impacts of dietary patterns in different cities, focusing on the correlation between food consumption and environmental impact. The functional unit was the food required to meet one person's yearly needs (1 Inh/year). To determine the quantity and type of food consumed, as well as the income level of the residents, 523 surveys were conducted in households in four cities in Chile (Iquique, Santiago, Temuco, and Coyhaique). Survey data were complemented with secondary information from national statistics and the Ecoinvent database. The environmental impact assessment was carried out using SimaPro, selecting the categories of global warming, terrestrial acidification, terrestrial ecotoxicity, freshwater ecotoxicity, freshwater eutrophication, land use, and fossil resource scarcity. The results show that higher-income households generate greater environmental impacts attributed to higher per capita food consumption. In the global warming category, the environmental impact can range from 1.08 kg CO&lt;sub&gt;2&lt;/sub&gt; eq/inh/year for the first quintile to 2.15 kg CO&lt;sub&gt;2&lt;/sub&gt; eq/inh/year for the fifth quintile in Santiago. In this category, the impacts in the highest quintiles can be up to 2.2 times greater than those in the lowest quintiles. Similarly, in acidification, this difference can reach 2.3 times. In the freshwater eutrophication category, the highest-income quintiles can double the environmental impacts compared to the lowest (I and II), mainly due to higher consumption of red meat and dairy products. The food production stage was the environmental hotspot across all evaluated impact categories, accounting for 45%–60% of the impacts in global warming, terrestrial ecotoxicity, and fossil resource scarcity; 74%–78% in terrestrial acidification, freshwater eutrophication, and land use; and 68%–71% in freshwater ecotoxicity. Meat was pinpointed as the primary environmental hotspot in global warming (44%), terrestrial acidification (56%), freshwater eutrophication (50%), land use (35%), and fossil resource scarcity (30%). Conversely, cereals are the primary environmental hotspot in terrestrial ecotoxicity (30%) and vegetables in freshwater ecotoxicity (18%). The geographical location of cities also influenced the environmental impacts of food consumption, primarily due to the types of available foods in regions near each city. Food availability conditions, diets, and quantities consumed, thus influencing environmental impacts. Finally, household incomes, the geographical location of cities, and the food production systems in each city determine the environmental impacts of food consumption. Different configurations of these variables create unique environmental impact profiles for each city. Despite this, typical environmental hotspots in food consumption were identified across all cities, enabling the implementation of strategies to minimize environmental impacts o","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100190"},"PeriodicalIF":5.0,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266678942400028X/pdfft?md5=f82eac8394b25b13220027e8451d6b8b&pid=1-s2.0-S266678942400028X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140823107","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}

{"title":"A data-driven framework to inform sustainable management of animal manure in rural agricultural regions using emerging resource recovery technologies","authors":"Mohammed T. Zaki ,&nbsp;Lewis S. Rowles ,&nbsp;Jeff Hallowell ,&nbsp;Kevin D. Orner","doi":"10.1016/j.cesys.2024.100188","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100188","url":null,"abstract":"<div><p>Thermochemical conversion technologies are emerging as preferred resource recovery practices for managing animal manure in agricultural regions. Although the implementation of such technologies has been previously studied, difficulties exist in maintaining balance between high rate of resource recovery and low environmental, economic, and social impacts, particularly in rural regions with limited resources. We developed a data-driven framework by integrating machine learning with life cycle thinking that can be used as an open-source tool to help overcome these barriers. The framework was applied to compare two emerging technologies: pyrolysis versus hydrothermal carbonization for managing the excess poultry litter in a rural agricultural region. Among different machine learning models, random forest regression was the most successful to predict resource recovery of both technologies. Next, sustainability analysis indicated that the environmental (global warming), economic (annual worth), and social (system intrusiveness) impacts of pyrolysis was lower than hydrothermal carbonization. Finally, the framework revealed that implementation of pyrolysis at 600 °C for 1 h with the heating rate of 20 °C/min would result in the highest rate of resource recovery that corresponded to the lowest impacts. These results can be helpful in providing operational conditions for implementing emerging resource recovery technologies in rural agricultural regions.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100188"},"PeriodicalIF":5.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000266/pdfft?md5=706adcd01d9925330cc12b6a785600be&pid=1-s2.0-S2666789424000266-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140622346","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}

{"title":"A simplified machine learning product carbon footprint evaluation tool","authors":"Silvio Lang,&nbsp;Bastian Engelmann,&nbsp;Andreas Schiffler,&nbsp;Jan Schmitt","doi":"10.1016/j.cesys.2024.100187","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100187","url":null,"abstract":"<div><p>On the way to climate neutrality manufacturing companies need to assess the Carbon dioxide (CO₂) emissions of their products as a basis for emission reduction measures. The evaluate this so-called Product Carbon Footprint (PCF) life cycle analysis as a comprehensive method is applicable, but means great effort and requires interdisciplinary knowledge. Nevertheless, assumptions must still be made to assess the entire supply chain. To lower these burdens and provide a digital tool to estimate the PCF with less input parameter and data, we make use of machine learning techniques and develop an editorial framework called MINDFUL. This contribution shows its realization by providing the software architecture, underlying CO₂ factors, calculations and Machine Learning approach as well as the principles of its user experience. Our tool is validated within an industrial case study.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100187"},"PeriodicalIF":5.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000254/pdfft?md5=3a6305a5578dcdf33b5bb4f13acf306c&pid=1-s2.0-S2666789424000254-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140559060","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}