Cleaner Waste Systems最新文献

{"title":"Sustainable utilization of citrus peel waste: Biochar production, modification, and applications","authors":"Simron Rai ,&nbsp;Thong Nguyen Tan ,&nbsp;Visanu Tanboonchuy ,&nbsp;Sarttrawut Tulaphol ,&nbsp;Seelawut Damrongsiri ,&nbsp;Penradee Chanpiwat ,&nbsp;Doan Pham Minh ,&nbsp;Vincent Oriez ,&nbsp;Nurak Grisdanurak ,&nbsp;Mongkolchai Assawadithalerd ,&nbsp;Pummarin Khamdahsag","doi":"10.1016/j.clwas.2025.100450","DOIUrl":"10.1016/j.clwas.2025.100450","url":null,"abstract":"<div><div>Citrus peel waste (CPW) is generated in substantial quantities worldwide and poses an environmental burden through improper disposal; however, its high lignocellulose content makes it a promising feedstock for producing value-added biochar. This review aims to critically synthesize recent advances in CPW-derived biochar production, modification, and applications within a circular bioeconomic context. Key findings show that pyrolysis conditions, feedstock variability, and activation strategies strongly influence biochar yield, pore development, and functional chemistry. Physical, chemical, and hybrid surface modification techniques substantially increase the adsorption selectivity and efficiency. CPW-derived biochars effectively remove heavy metals, organic pollutants, and nutrient contaminants, and offer additional benefits in terms of soil improvement, carbon sequestration, and emerging biomedical applications. Despite these advantages, challenges remain regarding feedstock heterogeneity, process scalability, regeneration performance, and environmental safety. Overall, the valorization of CPW into biochar represents a sustainable pathway for waste reduction and environmental remediation, with future opportunities in advanced material engineering and alignment with global sustainability goals.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100450"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749642","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":"Performance assessment of recycled concrete aggregate from a 60-year-old stadium: A comparative study with laboratory-produced aggregate","authors":"Guilherme Chagas Cordeiro ,&nbsp;Amanda Pereira Vieira ,&nbsp;Gabriela Valvassori Maioli Fontes ,&nbsp;Mônica Batista Leite","doi":"10.1016/j.clwas.2025.100425","DOIUrl":"10.1016/j.clwas.2025.100425","url":null,"abstract":"<div><div>This study assesses the feasibility of using recycled concrete aggregates (RCA) from a 60-year-old demolished soccer stadium in Brazil (RCA-old) in comparison with RCA produced from one-year-old laboratory specimens (RCA-new) and high-quality granite aggregate. Both RCA types were processed to a maximum size of 12.5 mm and characterized for particle size distribution, shape, water absorption, density, micro-Deval abrasion resistance, and residual adhered mortar content. Concrete mixes with comparable workability – one with 100 % granite (control) and two with 50 % of RCA – were evaluated for compressive strength at 7, 14, and 28 days, water absorption, and resistance to sulfuric acid attack. RCA-old contained 15 % less adhered mortar than RCA-new, which resulted in a higher aggregate density and reduced water absorption. While both RCAs exhibited greater water absorption and abrasion loss than granite, blending them 1:1 in volume with granite reduced these deficiencies to near-control levels. Notably, RCA-old concrete achieved compressive strengths equivalent to the control mix and 8 % higher than the RCA-new mix at 28 days. Under sulfuric acid exposure, the RCA-old concrete showed mass loss comparable to the reference mix. Thus, RCA-old can replace 50 % of natural coarse aggregate without compromising workability, strength or durability, demonstrating the potential for sustainable reuse of aged demolition waste in structural concrete. It is worth noting that systematic comparisons between aggregates from aged concrete demolished in the field and freshly cast laboratory specimens are still scarce, but they are crucial for the global reality of RCA production.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100425"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324673","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":"Enhanced strength reduced modulus high calcium FA geopolymer concrete containing recycled aggregate concrete and Portland cement","authors":"Athika Wongkvanklom ,&nbsp;Patcharapol Posi ,&nbsp;Ampol Wongsa ,&nbsp;Yuwadee Zaetang ,&nbsp;Wanchai Yodsudjai","doi":"10.1016/j.clwas.2025.100384","DOIUrl":"10.1016/j.clwas.2025.100384","url":null,"abstract":"<div><div>In this paper, a reduced modulus high-calcium fly ash geopolymer concrete was developed as a sustainable and environmentally efficient construction material for road pavement. The recycled concrete aggregate (RCA) was used to replace natural coarse aggregate (NA) in making geopolymer concrete. The waste glass fiber reinforced plastic (GFRP) of 2.36–4.75 mm was then added at dosages of 0–2.0 % of fly ash by weight. In the final step, ordinary Portland cement (OPC) was used to replace 0–15 %fly ash to produce a low elastic modulus RCA geopolymer concrete containing GPRF and OPC. Test results showed that the RCA high calcium fly ash geopolymer concrete with 1.5 %GFRP and 15 % OPC gave low elastic modulus of 16.96 GPa with high compressive strength of 41.2 MPa and flexural strength of 3.17 MPa. The RCA was incorporated for its low rigidity, GFPR for its low rigidity and contribution to strength particularly in flexure, and OPC for setting and strength development with curing at ambient temperature. The developed low elastic modulus was 56 % of that of normal OPC concrete of the same compressive strength calculated from ACI318 of 30.18 GPa.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100384"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853005","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":"Forecasting organic waste and biomethane generation potential of a non industrial district of Eastern India: A data-driven approach to sustainable energy and waste management","authors":"Anudeb Ghosh ,&nbsp;Debasis Maji ,&nbsp;Shireen Roy ,&nbsp;Saradashree Pal ,&nbsp;Aman Basu ,&nbsp;Richik GhoshThakur ,&nbsp;Srinivasan Balachandran","doi":"10.1016/j.clwas.2025.100378","DOIUrl":"10.1016/j.clwas.2025.100378","url":null,"abstract":"<div><div>Waste management is a critical indicator, affecting public health, sanitation, and environmental sustainability, which can improve living standards in disadvantaged communities. The main objective of the study is to estimate population growth and organic waste production and assess the methane production until 2051 in 6 municipalities of Birbhum district. Arithmetic and Geometric Progression were used for population predictions, and Auto Regressive Integrated Moving Average (ARIMA) and Long Short Term Memory (LSTM) models for methane estimation. This study found that Birbhum municipal solid waste (MSW) contains 57–64 % organic material from markets, kitchens, and gardens, varying by municipalities. Results show that Class II municipalities like Bolpur generates 21 Metric Tonnes (MT) of organic waste everyday (364.86 gm per capita in 2021). With a 40 % organic waste collection efficiency, Bolpur can generate 7.67 Gg of methane yearly, expected to increase to 57 Gg/year by 2051, equivalent to 76 hm³ /year of Liquid Petroleum Gas (LPG). By 2051, other municipalities—Sainthia, Rampurhat, Nalhati, Suri, and Dubrajpur—shows high biomethane potential and the predicted LPG-equivalent methane production is 13.82, 19.92, 24.52, 22.95, and 1.78 hm³ respectively. This methane potential is due to exponential population increase and rising per capita MSW generation rates of 548.55, 609, 404.07, 645.38, and 501.45 gm per capita per day (g.p.c.d.) for Sainthia, Rampurhat, Nalhati, Suri and Dubrajpur municipality respectively. The results indicate that Birbhum's organic waste have high Biomethane Potential (BMP), highlighting the need to enhance waste collection and management. Effectively using this resource can boost district socio-economic growth, cleaner energy production, and environmental sustainability.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100378"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766913","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":"Variation in physicochemical characteristics during co-composting of vegetable waste with animal manure using different composting techniques","authors":"Khumujam Omeshori Devi,&nbsp;Angom Sarjubala Devi,&nbsp;Anil Pratap Singh","doi":"10.1016/j.clwas.2025.100398","DOIUrl":"10.1016/j.clwas.2025.100398","url":null,"abstract":"<div><div>The organic component of municipal solid waste consists of mainly kitchen wastes with almost 50 % of the total solid waste generation. Composting of kitchen waste is a good strategy towards management of solid waste and sustainable agricultural production. The main objective of the present study was to determine the bests mixing ratio of garden soil, vegetable waste and three different types of animal manures- poultry, swine and cow manure. The study was carried out using three different methods- bin, pit and windrow composting to produce stable and mature composts. Thermophilic temperature in all the composting feedstock during composting was recorded to be almost equal to or greater than 55 °C indicating removal of pathogens and heavy metals. The average OC, TN and AP in the composts was maximum in bin composting, although there was a declining trend from the initial till final compost stage. The composts obtained from 1:3:1.5 ratio of soil: vegetable waste: manure, recorded average maximum germination percentage with 88.67 % in poultry manure mix, followed by 73.33 % in cow manure mix. However, in swine manure mix composts, the 1:2:1 ratio recorded maximum germination percentage among the three different ratios. In between the three types of composting methods the average germination percentage was maximum in bin composting with 74.81 % followed by pit composting with 69.63 % and minimum in windrow composting with 60 %. The effectiveness of the composting methods was bin&gt; pit &gt; windrow and performance of manure was poultry&gt; cow&gt; swine.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100398"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902461","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":"Disaster waste management for resilient communities: A systematic literature review","authors":"Savindi Caldera ,&nbsp;Chamari Jayarathna ,&nbsp;Cheryl Desha","doi":"10.1016/j.clwas.2025.100333","DOIUrl":"10.1016/j.clwas.2025.100333","url":null,"abstract":"<div><div>The United Nations Sustainable Development Goals aim to ‘strengthening resilience and adaptive capacity to climate-related risk and natural disasters’, highlighting the urgent need for management of disaster waste. While there is a growing body of work on disaster management and resilience, it is still unclear how targeted disaster waste management practices can contribute to resilient outcomes. The study therefore aimed to explore the evolving relationship between disaster waste management (DWM) and resilient communities using a systematic literature review. The review includes an analysis of 75 conceptual and empirical articles selected from four research databases offering a resilience perspective. The findings indicated the <em>ad hoc</em> and limited use of DWM and established a conceptual model portraying the relationship between resilience and DWM. This model proposes opportunities in the areas of planning, waste treatment, environment, economic, organizational and legal aspects. The review also highlighted different aspects of resilience including conspicuous, community, urban, climate, circular economy, medical supply chain, technology and how they are applied in DWM to enable targeted use of DWM. A range of theories was evaluated and three key theories including Resilience theory, Protection Motivation theory, and Network Governance theory were identified as the most relevant lenses for research in DWM and resilience. The authors conclude the benefits of purposeful disaster management practices and contribute to better the bottom line, people and planet. This review uncovers a suite of theories and models, that can facilitate innovative ways to be incorporated in future DWM research.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100333"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522809","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":"Analysis of a new brick design using plastic waste","authors":"Andrés Emanuel Díaz,&nbsp;Nicolas Di Lalla,&nbsp;Alejandro Hernández","doi":"10.1016/j.clwas.2025.100339","DOIUrl":"10.1016/j.clwas.2025.100339","url":null,"abstract":"<div><div>This study develops an innovative 'H'-shaped brick incorporating recycled thermoplastics (HDPE, LDPE, and PS) as aggregates to simultaneously mitigate plastic waste and reduce energy demands in social housing. Despite prior research on single-type plastic bricks, a critical gap remains in optimizing ternary plastic blends (HDPE-LDPE-PS) for synergistic mechanical-thermal performance in low-cost housing. Five mix designs were systematically evaluated to address this gap, following ACI 211.1 and IRAM standards. The optimal dosage (BP₃) achieved an axial compressive strength of 4.92 N/mm², a density of 958 kg/m³ , and a thermal resistance of 0.60 m²K/W, surpassing conventional clay bricks by 21 % in strength and 67 % in thermal insulation. Thermal simulations demonstrated minimum energy savings of 22 % (summer) and 17.5 % (winter), validating the brick’s dual role in waste valorization and energy efficiency. The findings highlight the potential of the 'H' plastic brick as a sustainable alternative for low-rise social housing, combining mechanical durability with superior thermal properties—addressing a key limitation in existing studies focused on binary mixtures or isolated material properties. Future research should focus on long-term durability assessments, large-scale industrial validation, and integration with phase-change materials to further enhance performance.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100339"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517178","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 effectiveness of community-based eco-farm waste management training on enhancing farmers' environmental awareness: The role of government support and sustainability attitudes","authors":"Dwita Indrarosa ,&nbsp;Joko Mariyono ,&nbsp;Siswanto Imam Santoso ,&nbsp;Sutaryo Sutaryo","doi":"10.1016/j.clwas.2025.100394","DOIUrl":"10.1016/j.clwas.2025.100394","url":null,"abstract":"<div><div>Farmers' environmental awareness is pivotal in adopting sustainable agricultural practices, especially managing livestock waste. This study explores the effectiveness of community-based training models in enhancing farmers' environmental awareness in East Java, Indonesia, while considering the moderating roles of government support and attitudes toward sustainability. A quantitative experimental approach was employed, utilizing a pretest-posttest control group design with a sample of 160 farmers. The participants were divided into experimental and control groups, with the former receiving community-based eco-farm waste management training. Data were analyzed using Two-Way ANOVA to examine the impact of training, government support, and sustainability attitudes. The findings highlight that community-based training significantly improved environmental awareness compared to conventional training methods. Farmers who participated in community-based training and received high government support demonstrated the highest environmental awareness scores. Moreover, a positive attitude toward sustainability further amplified the training's effectiveness. This participatory approach fosters collaboration, experiential learning, and collective responsibility among farmers, making it superior to top-down training models. The study's novelty lies in integrating social, technological, and educational dimensions, which holistically address livestock waste management challenges. The training model offers practical and scalable solutions to promote sustainable farming practices by combining community-driven efforts with government incentives. However, the study is limited to rural areas in East Java, and future research should broaden its geographical scope and incorporate longitudinal analyses to assess long-term impacts. This research contributes to the theoretical understanding and practical application of participatory approaches in agricultural sustainability. It emphasizes the need for collaboration between communities and policymakers to foster environmental stewardship and improve waste management practices in farming communities.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100394"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048816","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":"Production of protein biomass from Chlorella vulgaris using foliar fertilizer nutrients","authors":"Yesica Jhoana Benavides Escobar ,&nbsp;John Alexander Muelas Calambas ,&nbsp;Iván Dario Otero Ramírez ,&nbsp;Karen Sofia Muñoz-Pabon ,&nbsp;Jorge Luis Sánchez Ortega ,&nbsp;Jhon Edinson Nieto Calvache","doi":"10.1016/j.clwas.2025.100337","DOIUrl":"10.1016/j.clwas.2025.100337","url":null,"abstract":"<div><div>One of the main challenges for industries in microalgae cultivation is the cost of their culture media. In this study, the use of two foliar fertilizers as alternative and lower cost culture media (MFF) for the production of <em>Chlorella vulgaris</em> compared to a control medium (BG11) was analyzed. The results for the MFF showed that on day 7 cell counts of up to 1.11 × 10⁷ cells/mL were obtained, in addition to a biomass yield of up to 0.32 g.L⁻¹ with an N:P ratio of 20:1. The highest protein content with MFF was on day 7, reaching maximum values (on a dry basis, db) of 54 g/100 g, however, lipids (1.48 g/100 g db) were low compared to literature. In addition, antiradical activity was observed by DPPH and ABTS methods and reducing power by FRAP method, supported by the presence of phenolic compounds and carotenoids, which increased significantly (p &lt; 0.05) between day 7 and 10 of cultivation. It is concluded that the MFF allow obtaining a significant amount of protein biomass on day 7, comparable to that of a control culture medium and that in addition, this biomass is rich in bioactive compounds that increase with the depletion of nutrients in the medium.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100337"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322459","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":"Examining the impact of visual prompt and intervention campaign materials on waste sorting: Knowledge, attitudes, and practices (KAP) and a mixed-methods approach","authors":"Rakotoarisoa Maminirina Fenitra,&nbsp;Emenda Sembiring,&nbsp;Aisya Rahmania Dangkua,&nbsp;Zayinatun Biladiyah Al Khoeriyah","doi":"10.1016/j.clwas.2025.100390","DOIUrl":"10.1016/j.clwas.2025.100390","url":null,"abstract":"<div><div>This study uses a mixed-methods design to examine university waste management practices, particularly waste sorting on campus. It combines quantitative surveys to assess the baseline perception of knowledge, attitude, and practice and evaluate behavioral changes and patterns among the participants, with experimental studies to examine the impact and effectiveness of the intervention materials. The data for the quantitative approach were collected in two steps: survey 1 (n = 154) and survey 2 (n = 69) participants. The 69 participants in Survey 2 also participated in the experimental study, which employed a within-subjects design. The convenience sampling technique was used to collect the data due to its practicality and efficiency. The survey found that the respondents have a high Knowledge, attitude, and practice toward waste sorting, while a gap was observed between knowledge, perception, and waste-sorting practices. Moreover, visual prompts can bridge these gaps; there was a significant improvement when visual prompts were used to assist waste sorting. Missorted waste dropped from 40.9 % at baseline (Task 1) to 10.2 % after visual prompts (Task 2), with the green bin improving most. Task 3 further reduced errors to 8.3 %, a 32.6-point decrease from baseline. Correspondingly, the observation also emphasised the effectiveness of combining visual prompts and intervention campaign materials to promote waste sorting knowledge and practices. The results of this research contribute to the current state of knowledge and guide policymakers and waste management managers in designing effective waste management strategies.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100390"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830152","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}