Cleaner Environmental Systems最新文献

{"title":"Techno-economic and environmental assessment of dietary fibre extraction from soybean hulls","authors":"Ricardo Rebolledo-Leiva,&nbsp;Maria Teresa Moreira,&nbsp;Sara González-García","doi":"10.1016/j.cesys.2024.100208","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100208","url":null,"abstract":"<div><p>This research evaluates the economic and environmental feasibility of extracting dietary fibre (DF) from a by-product such as soybean hulls. Techno-economic (TEA) and life cycle assessment (LCA) were carried out to identify the critical factors that may limit the implementation of a potential biorefinery plant. The modelling of the process was carried out on the basis of mass and energy balances, as well as the characteristics of the required equipment. TEA indicators such as minimum selling price (MSP), fixed capital investment, manufacturing costs were evaluated. A cradle-to-gate LCA approach and a functional unit (FU) of 1 kg of product (85% DF content) were considered. Impact categories such as global warming (GW), eutrophication, eco-toxicity, among others, were analysed. The results indicate that the production capacity achieves the plateau at about 56 kt y⁻¹, with an MSP value of 2.6 $·kg⁻¹. Furthermore, the GW profile was 8.76 kg CO₂eq per FU, and the main hotspot is the alkaline digestion stage due to the use of potassium hydroxide (KOH). Nevertheless, the management of the hulls from multi-product food plants and switching KOH production to renewable sources may reduce the profile in almost all categories analysed.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"14 ","pages":"Article 100208"},"PeriodicalIF":6.1,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000461/pdfft?md5=6bc4fa6dbfa7293cb92432ac135d1b3a&pid=1-s2.0-S2666789424000461-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141595890","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 active spring frost protection methods in viticulture: A framework to compare different technologies","authors":"Vincent Baillet,&nbsp;Ronan Symoneaux,&nbsp;Christel Renaud-Gentié","doi":"10.1016/j.cesys.2024.100209","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100209","url":null,"abstract":"<div><p>In viticulture, the risk of spring frost is mainly due to earlier budbreak, increasing the vulnerability of buds and green organs to freezing temperatures. Active Spring Frost Protection Methods (ASFPMs) aim to mitigate this risk by increasing the temperature in the bud area. ASFPMs are often seen as highly labour-intensive and resource consuming practices. ASFPM technologies are diverse and influenced by different external drivers, affecting differently their application strategies and the required equipment for efficiency. This study proposes a framework for analysing and comparing ASFPMs’ potential environmental impacts using Life Cycle Assessment (LCA) methodology. We illustrate this proposal with an example: Winter cover, wind machine, sprinkler and anti-frost candles comparison in Loire Valley conditions. We modeled the attributional LCAs with Impact world + characterisation method using Abribalyse 3.1 and Ecoinvent 3.8 databases. Application and climatic scenarios were elaborated to set conditions of ASFPMs use. The overall combination of attributional LCAs and external scenarios designs a context-specific LCA. Required time of application for each ASFPM to protect 1 ha during frost hours was determined using linear regression of ASFPM application time in function of total seasonal frost hours based on a recent decade (2013–2023). Sensitivity analysis consisted in varying frost hours theoretically with a step of 1 unit, using the lowest and highest frost hour numbers from 2013 to 2023 as boundaries. Overall, the ranking between ASFPM environmental scores changes based on the theoretical frost duration. The implementation of context-specific elements allowed for the development of system boundaries in attributional LCA, enabling the analysis and comparison of different types of technologies. The framework of this study showed its relevance in the context of ASFPM technologies through a concrete example in Loire Valley viticulture. Future research may consider other contextual elements and ASFPM technologies. This framework could be used in different fields of study to analyse and compare contrasted technologies in terms of environmental impacts.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"14 ","pages":"Article 100209"},"PeriodicalIF":6.1,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000473/pdfft?md5=b72a8d87d3de0d1d2d290dd8e8fb0a56&pid=1-s2.0-S2666789424000473-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141595894","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":"Environmental assessment of cement production with added graphene","authors":"Raphael Ricardo Zepon Tarpani ,&nbsp;Akilu Yunusa-Kaltungo ,&nbsp;Meini Su ,&nbsp;Patrick Manu ,&nbsp;Clara Man Cheung ,&nbsp;Michael Watson ,&nbsp;Paul Ladislaus ,&nbsp;Alejandro Gallego-Schmid","doi":"10.1016/j.cesys.2024.100206","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100206","url":null,"abstract":"<div><p>Cement production significantly contributes to climate change, necessitating alternatives to mitigate the environmental impacts of this essential construction material. This study evaluates 18 environmental impacts of producing Ordinary Portland Cement (OPC) and Graphene (Gr) using life cycle assessment (LCA). Additionally, we explore whether mixing OPC and Gr can lower the life cycle environmental impacts of the final product (OPC_Gr). Our results show that OPC production in the United Kingdom generates 775 kg CO₂ eq./t, 57% only from geogenic CO₂ emissions. Gr production via electrochemical exfoliation in Australia results in 121,000–143,000 kg CO₂ eq./t, primarily due to electricity generation. Using hydro and nuclear power (e.g., in Brazil and France) can sharply reduce these impacts (global warming potential in the range of 11,000–35,000 kg CO₂ eq./t). Adding 0.02 wt% of Gr in powder form (Gr_powder) from Australia to the OPC and assuming a 16.5% reduction in its usage due to increased strength, results in 674 kg CO₂ eq./t OPC_Gr (a 13% reduction). However, some impact categories like marine eutrophication and freshwater ecotoxicity potentials increase sharply (&gt;28%). Using Gr_powder from Brazil and France further reduces the OPC_Gr global warming potential and the overall environmental footprint.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"14 ","pages":"Article 100206"},"PeriodicalIF":6.1,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000448/pdfft?md5=d3736f5749c39a391cf945eeafe0259b&pid=1-s2.0-S2666789424000448-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141542250","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 review evaluating the gaps in plastic impacts in life cycle assessment","authors":"Kealohi Sabate,&nbsp;Alissa Kendall","doi":"10.1016/j.cesys.2024.100205","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100205","url":null,"abstract":"<div><p>Plastics provide numerous societal benefits but have adverse effects on the environment over their life cycles; however, the magnitude, time horizon, and scope of these impacts is uncertain, particularly for plastics that are lost to the environment. Life cycle assessment (LCA) is a method intended to capture environmental impacts of a product from cradle-to-grave, and has often been applied to plastics. This article undertakes a systematic literature review of LCA and life cycle impact assessment (LCIA) methods tailored to plastics, with particular focus on end-of-life stages and impacts from plastics lost to the environment. The review identified 1541 articles for screening, of which 51 were selected for review. Results show that even when LCA studies are largely focused on end-of-life, most ignore the risks of losing plastics to the environment, and omit the attendant impacts. Articles devoted to creating LCIA methods for plastics in the environment are growing in number, and focus primarily, on the effects of macroplastics in the marine environment. The review shows an urgent need to better understand the probability of plastic losses to the environment and their fate and transport, and develop impact characterization factors that better reflect the effects of plastics on humans and ecosystems.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"14 ","pages":"Article 100205"},"PeriodicalIF":6.1,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000436/pdfft?md5=71c122aef386d5a53b1144924c76d7c4&pid=1-s2.0-S2666789424000436-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141542249","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":"Assessing the climate effects of clinker production: A statistical analysis to reduce its environmental impacts","authors":"Claudio Durastanti ,&nbsp;Laura Moretti","doi":"10.1016/j.cesys.2024.100204","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100204","url":null,"abstract":"<div><p>Building materials and components account for about 10% of the world's anthropogenic greenhouse gas emissions. Carbonate decomposition and fuel combustion from the cement production process are responsible for almost 7% of carbon dioxide emissions. Since clinker is the most impacting component of ordinary Portland cement, this paper presents a statistical analysis of the life cycle impacts of 41 recipes of grey clinker produced in Europe from 2015 to 2023 to identify the consumption impact categories (e.g., fossil fuels, renewable and non-renewable secondary fuels) which better explain the assessment of the Global Warming Potential (GWP), typically exploited to quantify the environmental impact of clinker production. More in detail, several regression methods are applied to the available dataset to build predictive models for GWP and to determine the most relevant impact categories. The regression models are then compared with respect to their statistical accuracy and goodness of fit. The results provide information that can support cement producers in developing low-impacting cement recipes.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"14 ","pages":"Article 100204"},"PeriodicalIF":6.1,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000424/pdfft?md5=f74421d4e8842865c0276deb19b8281a&pid=1-s2.0-S2666789424000424-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141479793","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":"Parsimonious cumulative process-based workflow for early sanitation infrastructure evaluation (CPESI): Case study of Riohacha, Colombia","authors":"Yamileth C. Herrera ,&nbsp;Ronald R. Gutierrez ,&nbsp;Carlos Pacheco-Bustos","doi":"10.1016/j.cesys.2024.100203","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100203","url":null,"abstract":"<div><p>In small and medium-sized cities from developing countries, the early selection of integrated wastewater management systems is challenging due to the lack or limitations in the availability of basic information and skilled professionals. This study presents CPESI, a cumulative processes-based parsimonious workflow for early evaluation of sanitary infrastructure. CPESI is aimed to provide a simple, objective, and systematic analysis framework at the early stages of development of sanitary systems in underdeveloped nations. CPESI was applied to evaluate sanitation system alternatives for Riohacha (Colombia) in three stages, namely, (1) an initial assessment of citizens acceptability of the alternatives and analysis of basic laboratory testing; (2) a process analysis and technical-economic evaluation of alternatives based on CAPEX and OPEX indicators; and (3) engineering judgment to select the most viable alternative through multi-criteria evaluation. Our results suggest that CPESI could be highly replicable in developing countries and that it has the potential to expedite the alternatives assessment process when compared to data-intensive methods and expert requirements. Several researchers have highlighted the need to develop tools suitable to evaluate SDG 6 in developing nations. We believe that CPESI has the potential to contribute to that end.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"14 ","pages":"Article 100203"},"PeriodicalIF":6.1,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000412/pdfft?md5=77c3772e2971387e0360a21470c859e0&pid=1-s2.0-S2666789424000412-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141438741","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":"Dual inhibitors for mitigating greenhouse gas emissions and ammonia volatilization in rice for enhancing environmental sustainability","authors":"Ankita Paul ,&nbsp;Arti Bhatia ,&nbsp;Ritu Tomer ,&nbsp;Vinod Kumar ,&nbsp;Shikha Sharma ,&nbsp;Ruchita Pal ,&nbsp;Usha Mina ,&nbsp;Rajesh Kumar ,&nbsp;K.M. Manjaiah ,&nbsp;Bidisha Chakrabarti ,&nbsp;Niveta Jain ,&nbsp;Y.S. Shivay","doi":"10.1016/j.cesys.2024.100199","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100199","url":null,"abstract":"<div><p>The use of inhibitors retain nitrogen as ammonium in soil, giving plants ample time for its uptake. This can reduce nitrous oxide (N₂O) emissions, but extended retention may increase ammonia (NH₃) volatilization. This study assessed the efficacy of coated urea fertilizers in reducing greenhouse gas (GHG) emissions and NH₃ volatilization in rice fields. A field experiment with Pusa 44 rice in the kharif seasons of 2019 and 2020 compared unfertilized control (No N), prilled urea (PU), nitrification inhibitors (NIs): neem oil-coated urea (NCU), karanj oil-coated urea, and dual inhibitor (DI: Limus + NCU). The coated urea fertilizers were analysed with scanning electron microscopy, fourier transform infrared spectrometry, and energy-dispersive spectroscopy. Compared to PU, DI reduced N₂O emissions by 23.7%, methane by 11.9%, and NH₃ by 29.8%. DI also reduced NH₃ emissions by 36–39% compared to other NIs. Overall, DI can lower the global warming potential of rice cultivation in trans Indo-Gangetic plains region by 17.1% for both direct and indirect emissions, suggesting its significant potential to reduce India's contribution to total agricultural GHG emissions.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100199"},"PeriodicalIF":5.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000370/pdfft?md5=6c3a5a21ac6c439aae732d4ab4f703c0&pid=1-s2.0-S2666789424000370-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141325242","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":"Distribution of benefits and adverse effects and their role in industrial symbiosis decision-making – A Swedish case study","authors":"Lovisa Harfeldt-Berg","doi":"10.1016/j.cesys.2024.100202","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100202","url":null,"abstract":"<div><p>Industrial symbiosis (IS) has been recognized as an important approach to succeed in the transition towards increased circularity in industry and society. IS involves collaboration between different actors sharing resources, aiming to minimize waste, improve resource and/or energy efficiency, resulting in reduced emissions and environmental impact. This study conducts an embedded single case study at an IS network in Sotenäs, Sweden, where both private and public actors collaborate by exchanging resources. The study identifies benefits and adverse effects of the IS network and explores how these are considered in the actors' decision-making regarding participation. The results indicate that different actors perceive different types and degrees of benefits and adverse effects. To add further value, this study develops an analytical framework for mapping benefits and adverse effects in the form of an impact assessment matrix. The framework maps at what level in society effects accrue and at what point in time they are expected to occur. The results of this study can help understand the role of specific benefits and adverse effects in actors’ decision-making, and show the distribution of effects across societal levels. This knowledge can help understand the complexity of IS networks and thereby facilitate the implementation of IS.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100202"},"PeriodicalIF":5.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000400/pdfft?md5=3e3c07a75a9e396d386a0f64d7ccfb78&pid=1-s2.0-S2666789424000400-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141292224","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":"The environmental impact of extraction: A holistic review of the quarry lifecycle","authors":"Christina Lee,&nbsp;Gauti Asbjörnsson,&nbsp;Erik Hulthén,&nbsp;Magnus Evertsson","doi":"10.1016/j.cesys.2024.100201","DOIUrl":"https://doi.org/10.1016/j.cesys.2024.100201","url":null,"abstract":"<div><p>As more companies start disclosing environmental, social, &amp; governance (ESG) information, a holistic understanding of environmental impact is needed to provide transparency on the different concerns of stakeholders from different backgrounds. The extraction industries are poised to play a pivotal role in providing key environmental information to downstream organizations. However, these industries face unique environmental challenges, making it difficult to identify what is significant to disclose. This article explores significant environmental impacts within the quarrying sector, from a lifecycle perspective. Quarries, where mechanical extraction and processing for rock products (including aggregates and ornamental stone) occur, are integral for infrastructure projects worldwide. To identify significant environmental aspects that should be considered in comprehensive environmental assessment for quarry stakeholders, a systematic literature review is conducted with in-depth content analysis. This reveals potential significant environmental impacts, trends, and crucial knowledge gaps. Nine relevant environmental aspects are found across six lifecycle stages for quarries. Notably, differences in environmental concepts are observed. To help overcome some conceptual barriers and improve understanding at a holistic level, environmental aspects are mapped to endpoint impacts where notable damages can occur. The findings suggest more harmonization of significance assessment for environmental impacts is needed to facilitate cross-disciplinary discourse. Waste management and transport emerge as key areas that demand increased attention. Additionally, future research efforts should focus on exploring ways to reduce environmental impact in quarries.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100201"},"PeriodicalIF":5.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000394/pdfft?md5=18469a6be742678c259ffa6193928ce3&pid=1-s2.0-S2666789424000394-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141250260","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":"Systematic literature review on system dynamic modeling of sustainable business model strategies","authors":"Agusta Thora Jonsdottir ,&nbsp;Lara Johannsdottir ,&nbsp;Brynhildur Davidsdottir","doi":"10.1016/j.cesys.2024.100200","DOIUrl":"10.1016/j.cesys.2024.100200","url":null,"abstract":"<div><p>The need for more studies on the dynamics of business models has been recognized, especially when considering how business models need to transform to support the transition toward sustainable development and a circular economy. System dynamics business model simulations can explore relationships between business strategy, daily operations, strategy implementation, and stakeholder interactions. This study aims to synthesize and analyze findings from existing literature on system dynamic modeling of business models. Following the PSALSAR systematic literature review framework, the results highlight a noticeable focus shift in the evolution of sustainable business model strategies. Before 2016, scholars focused on resource maximization strategies and sustainable scale-up solutions. Post-2016 emphasis has revolved around strategies delivering functionality, adopting a stewardship role, and closing the resource loop. The findings support that system dynamics is a powerful tool for business model innovation, allowing risk-free testing of scenarios and helping to identify leverage points, such as regulations, policies, and product/service design. System dynamics advance the business model paradigm, especially for implementing sustainability strategies. Consequently, this study has implications for scholars, policymakers, and the business community, given its application to furthering sustainable development and the circular economy.</p></div>","PeriodicalId":34616,"journal":{"name":"Cleaner Environmental Systems","volume":"13 ","pages":"Article 100200"},"PeriodicalIF":5.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666789424000382/pdfft?md5=a8dce2b672b558f1d61f73a13dcbd696&pid=1-s2.0-S2666789424000382-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141275882","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}