Cleaner and Circular Bioeconomy最新文献

{"title":"Effects of plastic-char on soil functions and crop productivity","authors":"Winfred R. Athembo ,&nbsp;John Redshaw ,&nbsp;Simon Jeffery","doi":"10.1016/j.clcb.2025.100189","DOIUrl":"10.1016/j.clcb.2025.100189","url":null,"abstract":"<div><div>A significant quantity of plastic waste cannot be recycled. One way of processing this plastic is through pyrolysis, which produces feedstocks for polyolefin synthesis. This process produces a biochar like product called “plastic-char”. This study aimed to investigate the impact of plastic-char produced from mixed non-recyclable plastic waste on pore water elemental concentrations, plant growth and greenhouse gas (GHG) emissions using a series of pot experiments applied at 1 t ha^-1 and 10 t ha^-1 eq. Plastic-char was found to increase plant growth of <em>Lolium perene</em> by a cumulative total of approx. 60% over four harvests, with no significant impact on germination. Increases in pore water concentrations of approximately 200% were observed for Ca, K and Mg at 10 t ha^-1. Significant increases were observed in pore water concentrations for Sb (371%) Na (519%), and Ti (724%) at 10 t ha^-1, compared to the control, with no significant changes in Al, Cd, Co or Cr. The plastic-char significantly increased the production of CO₂ from the soil by approximately 330% over the 10 days compared to the control, when applied at 10 t ha^-1 eq. While we do not suggest that soil application of plastic-char from mixed plastic waste should be used as a means of waste disposal, evidence presented here suggests that there may be value in plastic-char in terms of plant nutrients from the ash fraction and potential GHG reduction from the carbon rich fraction if it can be shown to be sufficiently depleted in contaminants. As such, this represents a potential means of adding value to the mixed plastic waste management stream.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100189"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265772","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":"Fashioning the future: Bio-based textiles, circular innovation, and sustainability in emerging markets","authors":"Andrew Burnstine,&nbsp;Andrea Camargo","doi":"10.1016/j.clcb.2025.100194","DOIUrl":"10.1016/j.clcb.2025.100194","url":null,"abstract":"<div><div>The global fashion industry, a significant contributor to environmental degradation and socio-economic disparities, is undergoing a critical transformation towards sustainability. This paper investigates the burgeoning field of bio-based textiles derived from food and agricultural waste, examining their potential to foster a circular economy and drive sustainable development in emerging markets. Through a qualitative multiple case study analysis of nine pioneering companies—Desserto, Piñatex (Ananas Anam), Circular Systems, Inversa Leathers, Frumat, Vegea, Bananatex, S.Café, and QMILK—this research explores how materials originating from pineapple, banana, apple, grape, cactus, coffee, milk, and even invasive species are converted into innovative textiles. The study critically assesses how these innovations contribute to specific United Nations Sustainable Development Goals (SDGs)—notably SDG 8 (Decent Work and Economic Growth), SDG 9 (Industry, Innovation, and Infrastructure), SDG 12 (Responsible Consumption and Production), SDG 13 (Climate Action), and SDG 15 (Life on Land)—by reducing environmental footprints, valorizing waste streams, and creating socio-economic opportunities, particularly within the Global South. The findings highlight the technological advancements, environmental advantages, and the significant, yet complex, socio-economic potential of decentralized textile production. By framing these innovations within socio-technical transition theories and a circular economy lens, this paper offers nuanced insights into how the convergence of material science, food system valorization, ethical branding, and policy support is reshaping the trajectory of the fashion industry towards a more regenerative and equitable future.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100194"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145570989","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":"Erratum Regarding Previously Published Articles","authors":"","doi":"10.1016/j.clcb.2025.100180","DOIUrl":"10.1016/j.clcb.2025.100180","url":null,"abstract":"","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100180"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736837","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 assessment of compost for Agaricus bisporus production: an Irish case study","authors":"Éamonn Walsh ,&nbsp;Aiduan Borrion ,&nbsp;Lael Walsh","doi":"10.1016/j.clcb.2025.100183","DOIUrl":"10.1016/j.clcb.2025.100183","url":null,"abstract":"<div><div>There has been a considerable rise in cultivated edible mushroom production since 1997, with mushrooms now a major component of diets worldwide. Button mushroom (<em>Agaricus bisporus</em>) production accounts for a significant portion of global production and even more in Europe and North America. The cultivation of <em>A. bisporus</em> relies on the production of a compost (also known as substrate) designed specifically for <em>A. bisporus</em>’ cultivation requirements. Previous studies have shown compost as a potentially important hotspot in the mushroom cultivation life cycle, yet few studies have assessed it as its own product. It is important to carefully evaluate the processes involved in compost production as it is strongly linked with other agricultural activities. This research conducts a life cycle assessment (LCA) on the production of mushroom compost using an Irish system as a case study. The ingredients for compost production (e.g. wheat straw) as well as some production processes themselves (e.g. composting) are highlighted as hotspots. The LCA shows that materials from other agricultural processes can contribute highly to the overall emissions of the compost. For example, wheat straw contributes 36% to ‘climate change’ impact category, and 94% and 95% to ‘freshwater eutrophication’ and ‘marine eutrophication’ categories, respectively. However, the allocation method has a significant impact on the extent of contribution from these agricultural co-products. A mass based allocation increases the contribution of wheat straw in most impact categories compared to an economic allocation. Furthermore, economic allocation produces different impacts depending on the jurisdiction in question and its legislative support of waste reuse and the circular economy. This research demonstrates how the impact of compost production can vary across jurisdictions due to the value given to ‘waste’ products. This has significant importance to the mushroom industry in terms of understanding their emissions and reaching climate-net zero targets.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100183"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157066","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":"Value chain analysis of smallholder highland bamboo products: The case of Hula and Gumer districts, Ethiopia","authors":"Yared Gelaw ,&nbsp;Getahun Kassa ,&nbsp;Degnet Abebaw ,&nbsp;Habtemariam Kassa ,&nbsp;Abdu Abdelkadir","doi":"10.1016/j.clcb.2025.100177","DOIUrl":"10.1016/j.clcb.2025.100177","url":null,"abstract":"<div><div>The utilization of highland bamboo in Ethiopia is currently at a shallow level, despite its immense potential as a valuable non-timber forest product. Value chain analysis is a widely used method to assess business activities and recognize which activities are the most useful and can be improved to create a competitive advantage for a business. A comprehensive study was conducted to understand the value chain and identify opportunities and constraints. The data for the study were collected through surveys, interviews, and observations involving various stakeholders, such as producers, processors, traders, brokers, consumers, and other stakeholders, that influence the value chain. The analysis was undertaken following the combined analysis framework developed by the United Nations International Development Organization (UNIDO), making the market better for the poor (M4P), and Kaplinsky and Morris for value chain actors. In the Hula and Gumer districts selected for this study, 274 smallholder highland bamboo producers were randomly surveyed using a probability proportional to size sampling procedure. Additionally, other actors in the value chain were purposefully selected. The findings showed that key actors in the highland bamboo value chain were smallholder producers, brokers, wholesalers, processors, recreational house constructors, and consumers. Each actor contributed to adding value in different ways through form-type and place-type value-addition strategies. Among the five main channels selected, the manufacturing industry channel (Channel VII and VIII) generates the highest value for bamboo culms which was USD 3.836 per culm. Processors using modernized machines not only reduced processing costs but also enabled the handling of a larger volume of raw materials while ensuring a higher production output with extraordinary efficiency. This study suggests that it is necessary to empower actors by improving their awareness, establishing better linkages, and accessing information to make effective value addition and increase commercialization. In addition to this, this study’s results indicated that policymakers should focus on improving infrastructural access, such as roads and electric power supply, and providing treating machines, chemicals, and processing machines which are necessary for further improvements in the chain performance of bamboo commercialization. Finally, findings in the study suggested that shifting the chain from low-value to high-value addition, upgrading small artisanal processors to manufacturing units, and supporting highland bamboo processing industries enhance overall well-being of the country.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100177"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890595","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":"Constructing cleaner food service production design: Quality measurement and priority paradoxes in Greater Jakarta, Indonesia","authors":"Tutur Wicaksono ,&nbsp;Marhadi Marhadi ,&nbsp;Glisina Dwinoor Rembulan ,&nbsp;Md. Nekmahmud","doi":"10.1016/j.clcb.2025.100162","DOIUrl":"10.1016/j.clcb.2025.100162","url":null,"abstract":"<div><div>The food service industry remains a major contributor to global food waste and food insecurity, a challenge that is increasingly unacceptable amid rising consumer awareness of environmental issues. This study proposes a cleaner production prioritization model using a modified Quality Function Deployment approach, supported by two structured surveys involving customers and industry practitioners. The findings reveal a significant perception gap. Customers assign the highest importance to good operational practices (CIMP = 4.29), employee training and awareness (CIMP = 4.26), and waste management (CIMP = 3.98), yet report low satisfaction in these areas. In contrast, practitioners prioritize good operational practices (IPI = 4.45), technology and equipment modification (IPI = 4.39), and employee training and awareness (IPI = 4.32), while rating waste management as least valuable for revenue growth (PRC = 1.0). To determine strategic focus, cleaner production attribute absolute scores (CPAS) were calculated and normalized into Cleaner Production Relative Scores (CPRS), identifying good operational practices (CPAS = 9.40, CPRS = 19.4 %), employee training and awareness (CPAS = 8.27, CPRS = 17.1 %), and technology and equipment modification (CPAS = 6.90, CPRS = 14.2 %) as top priorities. Integrated cleaner production training (TAA = 303, TAR = 12.5 %) and circular material utilization (TAA = 296, TAR = 12.2 %) were identified as the most impactful technical actions to address the identified gaps. These insights offer actionable guidance for aligning food service practices with customer expectations to enhance sustainability and competitive advantage.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100162"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297472","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":"Integrated thermocatalytic and photocatalytic valorization of Hermetia illucens biomass for renewable fuel and chemical production","authors":"Ebrahim Abbasi","doi":"10.1016/j.clcb.2025.100168","DOIUrl":"10.1016/j.clcb.2025.100168","url":null,"abstract":"<div><div>The increasing need for sustainable energy and eco-friendly waste management calls for innovative renewable resource solutions. <em>Hermetia illucens</em> (Black Soldier Fly) biomass is highlighted as a valuable feedstock due to its rapid growth and efficient nutrient recycling. This species was selected for its high lipid and protein content compared to other insect sources, which makes it particularly suitable for biofuel production. This study investigates the catalytic conversion of <em>H. illucens</em> biomass through thermocatalysis and photocatalysis. The larvae were fed organic waste, processed into powder, and subjected to catalytic reactions. Thermocatalytic pyrolysis produced bio-oil (48.7 wt%), biochar (28.4 wt%), and gaseous products (22.9 wt%) at 300–500 °C, with the bio-oil containing a range of hydrocarbons. Photocatalytic upgrading achieved a 63.4 % conversion of lipids into fatty acid methyl esters. Environmental assessments indicated a 40 % reduction in greenhouse gas emissions compared to traditional methods. This study focuses exclusively on <em>H. illucens</em>, and future research is recommended to compare its catalytic conversion efficiency with other insect-derived or lignocellulosic biomasses. The findings emphasize the potential of <em>H. illucens</em> as a renewable resource for sustainable energy and waste valorization, showcasing effective catalytic routes while recognizing challenges such as feedstock variability and economic scalability.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100168"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750551","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":"Tracking agricultural transformation: fertilizer efficiency and crop production trends worldwide (1961–2022)","authors":"Saeed Sharafi ,&nbsp;Fatemeh Mottaghi ,&nbsp;Fatemeh Omidvari","doi":"10.1016/j.clcb.2025.100191","DOIUrl":"10.1016/j.clcb.2025.100191","url":null,"abstract":"<div><div>This study examines historical trends in crop production, land area expansion, and fertilizer consumption across four major crop categories—cereals, pulses, oilseeds, and tubers—in selected global regions from 1961 to 2022. The analysis reveals substantial growth in both crop yields and cultivated land, with tubers experiencing the most significant production increases across all regions. For example, in the MEA-M zone, tuber crops exhibited an annual production growth of 3.2%, outpacing cereals (2.5%) and pulses (2.1%), while oilseeds grew steadily at 2.8%. Total land area devoted to these crops expanded notably, with pulses and cereals occupying a larger share of agricultural land in regions such as SSA-M and the EEU. Concurrently, fertilizer consumption increased across all regions, with average annual rises of 2.5% for nitrogen (N), 3.0% for phosphorus (P), and 2.8% for potassium (K). However, the study also highlights a decline in nutrient use efficiency over time, especially in regions with higher fertilizer application rates, such as the EEU and MEX. For example, N and P use efficiency in the MEA-M region decreased by 0.8% and 1.1% annually. In contrast, regions like KOR and SSA-M saw notable improvements in P efficiency, with annual increases of 0.6% and 0.4%, respectively. These findings underscore the dual challenge of maintaining agricultural productivity while enhancing nutrient management. The study advocates for a more refined approach to fertilizer use, focusing on N-specific strategies to optimize nutrient application, improve fertilizer efficiency, and reduce the environmental impact of intensive agricultural practices. The results emphasize the importance of sustainable agricultural policies to balance production growth with ecological stewardship, especially in the context of rising global food demand.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100191"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145415420","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":"Wood ash as an eco-friendly alternative for sustainable cement replacement in concrete","authors":"Suehail Aijaz Shah ,&nbsp;M. A. Tantray ,&nbsp;Arooba Rafiq Bhat","doi":"10.1016/j.clcb.2025.100178","DOIUrl":"10.1016/j.clcb.2025.100178","url":null,"abstract":"<div><div>Wood burning is a common practice in various domestic and industrial activities in our region, including baker's furnaces, hamams, fireplaces, and small-scale industries, leading to the generation of large quantities of wood ash as a byproduct. Improper disposal of this ash poses environmental risks such as soil and water contamination, increased soil alkalinity, air pollution, and health hazards. Given its mineral-rich composition including calcium, potassium, and magnesium and silica, wood ash has potential as a supplementary cementitious material, offering a sustainable solution for waste utilization and resource conservation. This study investigates the feasibility of using locally sourced wood ash, obtained from a traditional baker (Nanawai), as a partial cement replacement in concrete. Concrete mixes were prepared with varying percentages of wood ash, and their fresh and hardened properties were evaluated through standard tests for workability, compressive strength, and durability performance. The results indicate that incorporating wood ash up to an optimal replacement level improves certain mechanical properties without significantly compromising workability, while also contributing to waste reduction. The findings support the potential of wood ash as a sustainable material in concrete production and highlight the need for further research on long-term performance and environmental impact quantification through lifecycle assessment.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100178"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018707","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":"Mapping ecosystem services change under land use change for oil palm expansion","authors":"Ada Na'bila Acobta ,&nbsp;Lacour Mody Ayompe ,&nbsp;Elizabeth Derse Crook ,&nbsp;Benis N Egoh","doi":"10.1016/j.clcb.2025.100176","DOIUrl":"10.1016/j.clcb.2025.100176","url":null,"abstract":"<div><div>Growing demand for palm oil is increasingly driving forest conversion in the tropics, leading to the loss of biodiversity and ecosystem services (ES). Extensive studies have looked at the impacts of land use change (LUC) for oil palm expansion on biodiversity, but very few have quantified the impacts on ES in growing palm oil producing regions like Africa. We mapped and quantified the impacts of oil palm expansion on carbon storage, soil retention and nutrient retention ES in a palm oil producing region of Cameroon. We used the ESRI Sentinel-2 2017 10 m and ECJRC 2015 1 km Land Cover maps with InVEST models to assess the impacts of LUC for oil palm on ES. We found that present-day oil palm expansion has reduced carbon storage by 0.6 % from a “pre-cultivation” baseline scenario and will likely further reduce by 3.7 % and 6.8 % with 2 km and 4 km expansion. Soil retention is reduced by 0.2 % present-day and will likely reduce by another 5.5 % and 13.9 % while nutrient retention is reduced by 8.4 % and will likely reduce by 22.0 % and 40.4 % with 2 km and 4 km expansion respectively. Such information is necessary to understand the conservation of these ES in light of future oil palm expansion.</div></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"12 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908516","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}