Frontiers in Sustainability最新文献

{"title":"Transitioning towards circular economy through municipal solid waste analysis and characterisation using SowaCLINK software","authors":"I. Onungwe, D. Hunt, Ian Jefferson","doi":"10.3389/frsus.2024.1321329","DOIUrl":"https://doi.org/10.3389/frsus.2024.1321329","url":null,"abstract":"Municipal solid waste constitutes environmental challenges globally, especially in developing countries, due to increasing waste generation, population growth, inadequate infrastructure, lack of data and poor planning. This study aims to conduct a comprehensive waste audit on the municipal solid waste generated in Aba, a metropolis in southeastern Nigeria. Aba is a commercial city considered the messiest because of the massive municipal solid waste generation and poor management. The study investigated the energy potential and waste regeneration. Municipal solid waste data was sought to provide insight into the quantity and composition of municipal solid waste. The methodology was site-based, in line with the standard test method for determining unprocessed municipal solid waste (ASTM-D5231-92) and SowaCLINK software, a computer-based environmental application, was used for characterization. Linear extrapolation was adopted to quantify the rate of municipal solid waste generated. The geometric mean was applied to forecast the area’s population for a 10-year design period. The chemical elements of the characterized municipal solid waste were utilized based on the ASTM-D5291 standard for municipal solid waste thermochemical conversion, and the high and low heating values were analyzed. The outcomes provided energy recovery potential, the electrical power potential, and the power to the grid of electrical power of the municipal solid waste. The results obtained were 0.7813 kg/p/d and 490,268 t/y for a population of 1,719,185 persons. The percentage of the municipal solid waste components with energy potential was 71%, comprising 48% combustible and 23% organic components on average. The high heating value computed was 176.5 MJ/kg, and the low heating value was 14 MJ/kg. The energy recovery potential was 3,709,463 MWh, the electrical power potential was 38,680 MW, and the power to the grid was 26.1 MW daily. The research reveals a promising direction in transitioning from the linear economy of municipal solid waste management toward implementing an integrated sustainable municipal solid waste management based on the circular economy model. The study recommends adopting detailed steps to proffer solutions to the environmental challenges associated with municipal solid waste in most low-middle-income countries to achieve sustainable municipal solid waste management while generating electricity and bio-fertilizers through incineration and anaerobic digestion.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"29 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140237313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutrition security and traditional food markets in Africa: gender insights","authors":"Emilie de Kanter, Ann Trevenen-Jones, Charlie M. J. Billiard","doi":"10.3389/frsus.2024.1321499","DOIUrl":"https://doi.org/10.3389/frsus.2024.1321499","url":null,"abstract":"Malnutrition is a major global challenge. Multiple forms, from underweight to obesity, exist, and several forms coexist within communities and households. Traditional food markets, also known as wet, local, or informal markets, are widespread in sub-Saharan Africa (SSA) and are a key place where people buy and sell food and socially interact, especially those vulnerable to malnutrition. As such they are vital to food and nutrition security. While it is recognized that gender is an important consideration in food and nutrition security, very little has been published in peer reviewed journals, with respect to gender and traditional food markets in SSA. This mini review aims to explore the nexus role of traditional food markets and gender in food and nutrition security. This study presents a narrative literature review, informed by literature identified in a systematic manner. Four databases were searched for key terms, including nutrition, different forms of malnutrition, gender, traditional food markets, and vendors. The papers provided insight into two main topics pertaining to the role of traditional food market practices, gender, and food and nutrition security. While few papers were identified in this mini review, they illustrated insightful nuances into traditional food markets, gender, and food and nutrition security. There is a need for explicitly framed gender studies that can better inform the limited existing knowledge of the experiences of gender and nutritional security of women and men in traditional food markets in SSA.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"65 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From waste to resource: demystifying the policy challenges and identifying opportunities for a circular economy in Zambia","authors":"Rebecca K. M. Clube, Malonga Hazemba","doi":"10.3389/frsus.2024.1300904","DOIUrl":"https://doi.org/10.3389/frsus.2024.1300904","url":null,"abstract":"Policy plays a significant role in accelerating or hindering a circular shift; Governments can set long-term visions and drive legislative change to create an enabling environment. Reflecting the regional picture, Zambia is experiencing increasing waste burdens due to a growing population and economic development. The current management approach is linear, characterized by low collection rates, inadequate disposal, and limited waste revalorization. From a sustainable development perspective, how waste is managed impacts pressing issues such as climate change and public health. The concept of the Circular Economy (CE) has gained global and regional interest given its potential to transform how resources are viewed and managed. Circular strategies may help to reduce waste burdens and create local socioeconomic opportunities while safeguarding the environment. This qualitative study uses document review and expert interviews to explore the current waste management regime in Zambia and understand if and how circularity is embedded into the policy approach. The findings suggest that the CE is potentially highly relevant for Zambia, but there are various policy challenges that could impede its successful integration into the national agenda. These challenges relate to ownership and coordination; gaps in implementation and enforcement; a restrictive licensing approach; obstacles to innovation and new entrants; as well as the role of informal sector actors. The challenges point to opportunities to overturn these policy shortfalls, which also presents future research avenues.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"38 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The master’s degree in development practice: a case study of twelve university programs","authors":"Faith Clarke, Gretchen Gano, Robin Currey, John Alleyne","doi":"10.3389/frsus.2024.1331323","DOIUrl":"https://doi.org/10.3389/frsus.2024.1331323","url":null,"abstract":"Sustainable development is a global priority. However, a lack of research exists on the programs designed to train sustainable development practitioners. This multi-case case study, possibly the first to describe the programs that trains development practitioners, utilized case study theory and semi-structured interviews with program administrators to describe sustainable development programs offered by 12 higher education institutions in eight countries with membership in the Global Association of Masters in Development Practice. The results revealed five themes or key drivers, nine advantages, and four deficiencies. Two drivers were enrollment-focused (admission of students with prior work experience in development and financial support), two were curriculum-focused (incorporation of field work and integration of specific knowledge aspects and skills training in the curricula), and one was institutional attitude (adoption of a culture of flexibility). The most common challenges were impacts from the COVID-19 pandemic. These results provide insights for continuous improvement efforts of program administrators for students in sustainable development. The practical methodology developed can be replicated and adapted for investigation of similar programs and other disciplines in higher education.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"51 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140447377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial: Sustainability assessment of chemicals in consumer products","authors":"Li Li, P. Fantke, Lei Huang","doi":"10.3389/frsus.2024.1376817","DOIUrl":"https://doi.org/10.3389/frsus.2024.1376817","url":null,"abstract":"","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"294 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140447942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What consumers want in a sustainability food label: Results from online co-creation workshops in the United Kingdom, Ireland and Denmark","authors":"S. Pedersen, T. Benson, George A Tsalis, Rebecca Futtrup, Moira Dean, J. Aschemann‐Witzel","doi":"10.3389/frsus.2023.1342215","DOIUrl":"https://doi.org/10.3389/frsus.2023.1342215","url":null,"abstract":"Changes in consumers’ decision-making relating to food play an important role in the sustainable transition of the food system. However, assessing sustainability across choice alternatives is complex. A holistic or multi-dimensional ‘summary’ sustainability label for food could help consumers make more informed choices, but it is important that such a label is developed taking consumers’ perception and understanding of sustainability into consideration. Hence, it is necessary to understand consumers’ needs and wants in a sustainability food label. The objective of this study is therefore to explore in-depth consumer perceptions and preferences for sustainability as a concept in food production as well as for a sustainability label for food.A total of six online co-creation workshops were carried out in the UK and Ireland (3 groups, n = 24) and Denmark (3 groups, n = 21) using an interactive platform, where participants over the course of two weeks discussed and engaged in creative tasks related to food and sustainability.Results show that consumers in lack information about the sustainability of food products. There were differences with regards to which of 10 pre-tested indicators of sustainability (nature preservation, climate change, animal welfare, fair wages, biodiversity, pollution, health, equality, economic growth and culture) were perceived as most important. The information participants discussed as relevant for a sustainability label included transportation, the degree of processing, and packaging, with some country differences. Consumers acknowledged the complexity of designing and understanding a sustainability food label and existing nutrition labels served as inspiration for creating a sustainability label. Consumers recommended more responsibility to be taken by retailers and food producers through public information campaigns to create awareness.Pros and cons of co-creating a sustainability label with consumers online are discussed as well as the implications for consumers, the food industry and policy makers.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"367 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140483056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“If less is more, how you keeping score?” Outlines of a life cycle assessment method to assess sufficiency","authors":"Hampus André","doi":"10.3389/frsus.2024.1342223","DOIUrl":"https://doi.org/10.3389/frsus.2024.1342223","url":null,"abstract":"It is increasingly clear that reaching environmental sustainability requires not only efficiency (reduced environmental impact per functionality) but also sufficiency measures (reduced environmental impact through reduced or changed functionality). Life cycle assessment (LCA) is a widely used tool to study environmental impacts related to consumption. However, because of the LCA convention of only comparing alternative products with equal functionality, it is currently inept as a method for assessing the environmental impacts of sufficiency measures. Against this background, this short paper aims to stimulate a discussion on how sufficiency measures can be assessed with LCA methodology. By analyzing the very few LCAs of explicit sufficiency measures in terms of the components of a functional unit (what function is provided, how much, for how long, and how well) features of a potential new branch of LCA methodology are outlined, called Sufficiency LCA. In Sufficiency LCA, product alternatives need to be similar enough so that the what component of the functional unit can be equal, while the other components, how much, how long, and how well, are allowed to be non-equal. Thus, a key feature of Sufficiency LCA concerns functional non-equivalence of compared product alternatives, which is not allowed or neglected in conventional LCA, but which could be allowed, acknowledged and quantified in Sufficiency LCA. Developing Sufficiency LCA could be critical considering that sufficiency measures are expected to be required, and that LCA is expected to be serviceable as decision-making support, in the transition toward environmental sustainability.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139601135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mineralisation of CO2 in wood biomass ash for cement substitution in construction products","authors":"N. Tripathi, Colin D. Hills, Raj S. Singh, Stephen Kyeremeh, Andrew Hurt","doi":"10.3389/frsus.2024.1287543","DOIUrl":"https://doi.org/10.3389/frsus.2024.1287543","url":null,"abstract":"This study extends our exploration of the potential of biomass ashes for their CO2-reactivity and self-cementing properties. The ability of three hardwood-based biomass ashes to mineralise CO2 gas and partially replace CEM I in mortars was investigated. The three hardwoods were English oak (Quercus rober), English lime (Tilia x europaea), and beech (Fagus sylvatica). The woody biomass wastes were incinerated at 800°C to extract their key mineral phases, which are known to be reactive to CO2 gas to form carbonates. The selected biomass ashes were analysed for their CO2-reactivity, which was in the range of 32–43% (w/w). The ashes were used to replace CEM I at 7 and 15% w/w and this “binder” was mixed with sand and water to produce cylindrical monolithic samples. These monoliths were then carbonated and sealed cured over 28 days. The compressive strength, density and microstructure of the carbonate-hardened monoliths were examined. The ash-containing monoliths displayed mature strengths comparable to the cement-only reference samples. The CO2 uptake of oak containing monoliths was 7.37 and 8.29% w/w, for 7 and 15% ash substitutions, respectively. For beech and English lime they were 4.96 and 6.22% w/w and 6.43 and 7.15% w/w, respectively. The 28 day unconfined compressive strengths for the oak and beech ashes were within the range of ~80–94% of the control, whereas lime ash was 107% of the latter. A microstructural examination showed carbonate cemented sand grains together highlighting that biomass ash-derived minerals can be very CO2 reactive and have potential to be used as a binder to produce carbonated construction materials. The use of biomass to energy ash-derived minerals as a cement replacement may have significant potential benefits, including direct and indirect CO2 emission savings in addition to the avoidance of landfilling of these combustion residues.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139608919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental, social, and governance tools and investment fund portfolio characteristics: a practical-question-oriented review","authors":"Xiang Gao, K. Koedijk, Sunghan Ryu, Stan Wetzels, Zhenfei Zhou","doi":"10.3389/frsus.2023.1323304","DOIUrl":"https://doi.org/10.3389/frsus.2023.1323304","url":null,"abstract":"This paper presents a literature review with the aim of facilitating investment funds to understand the practical question of whether investing responsibly can make a fund's portfolios more sustainable without compromising their return/risk profiles. The study contains most of the leading ESG research from the past two decades. We conclude from this research that the relationship between ESG and return/risk profile is predominantly neutral or even positive. Many scholars have found evidence on the performance of stocks, bonds, and real estate. The findings apply to Environmental, Social, and Governance criteria separately and in different regions. We contribute to the body of knowledge accessible to ESG-asset-seeking funds by complementing the impact investment theory and by linking ESG investment to portfolio-level characteristics and investor preferences. Looking into the future, we identify recent trends and developments in this niche field of ESG at the end of the paper.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"56 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139533111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prior goal setting of SDGs based on the interaction correlation","authors":"Mingxi Zhao, Zixiang Meng, Boda Xu, Dian Yu, Shu Wu, Rende Li","doi":"10.3389/frsus.2023.1214615","DOIUrl":"https://doi.org/10.3389/frsus.2023.1214615","url":null,"abstract":"For 2030, the Agenda for Sustainable Development sets out 17 goals for sustaining ecological and social growth, known as the Sustainable Development Goals (SDGs), which have mobilized countries around the world to integrate these goals into their national development strategies. However, the Agenda does not explain how these goals are interlinked, which limits their implementation. This paper therefore selects indicator data for 17 SDGs from the World Bank website for four groups of countries to estimate the network structure of the SDGs and the synergies and trade-offs between them, based on the Spearman coefficient. Based on this, the paper further uses a VAR model to identify priority targets among the SDGs and to predict the impact of achieving these targets 2 years earlier on other SDGs. It is found that the SDGs interact with each other in different historical periods, showing both synergies and trade-offs. And as the highest priority goal, the predictions in this paper suggest that SDG 6 has a strong positive impact on SDG 4 and SDG 8. This paper can help policy makers to allocate resources more effectively, maximize benefits, coordinate actions, adapt to future challenges and achieve global sustainable development goals.","PeriodicalId":253319,"journal":{"name":"Frontiers in Sustainability","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134230390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}