Cleaner Waste Systems最新文献

{"title":"Exploring urban solid waste landfill sites for Arba Minch Town, Ethiopia: A suitability analysis employing geospatial technologies for sustainable urban development","authors":"Alemayehu Abera ,&nbsp;Elias Bojago ,&nbsp;Mamush Masha ,&nbsp;Gemechu Tadila","doi":"10.1016/j.clwas.2025.100452","DOIUrl":"10.1016/j.clwas.2025.100452","url":null,"abstract":"<div><div>Geospatial technologies were applied in this study to evaluate potential landfill sites to accommodate solid waste in the fast-growing Arba Minch Town, southern Ethiopia, by integrating multiple criteria, including environmental (slope, land use/land cover types, distance from streams/rivers, and distance from protected areas), social (distance from settlements), and economic factors (distance from road networks). Using several criteria, including land use and land cover, road network, land slope, stream, distance from settlement, and distance from protected areas, the weighted overlay analysis method was used to evaluate suitability. In this process, weights were assigned to the factors based on their significance in determining landfill site suitability. Following the overlay analysis, the weighted aggregation results revealed four levels of suitability for solid waste landfill sites in the study area: unsuitable, less suitable, moderately suitable, and highly suitable. According to this study, the majority of the area (48.6 %) is unsuitable for landfill sites, 24.6 % is less suitable, and 19.8 % is moderately suitable for landfill sites. Only 7 % of the total area is highly suitable for a landfill site, with the most suitable areas located in the northeast of town. In conclusion, this study proposes a practical solution to the problem of solid waste landfill sites using geospatial technology. The AHP-weighted GIS overlay yielded an overall accuracy of ∼8–10 % points better (97.6 % vs. 89.4 %) as well as producer and user accuracies of 97.3 and 97.9 %, respectively (vs. 88.5 and 90.2 % points) to produce more accurate, reliable, and compliant landfill siting. The results of this study show that the implementation of GIS with the analytic hierarchy process (AHP) method has the potential to select appropriate landfill sites for future use in the region. These findings provide geospatial insights for municipal planners and regional authorities to develop resilient solid waste strategies, thereby enhancing environmental sustainability and urban resilience in Arba Minch and similar towns in Ethiopia.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100452"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749645","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":"Social pathways vs. personal attitudes: Modeling sustainable consumption in an emerging collectivist economy","authors":"Archie Anh Pham ,&nbsp;Ly N. Pham ,&nbsp;Quynh M. Nguyen ,&nbsp;Khue M. Nguyen ,&nbsp;Huong T. Dam ,&nbsp;Tra T.H. Le","doi":"10.1016/j.clwas.2025.100461","DOIUrl":"10.1016/j.clwas.2025.100461","url":null,"abstract":"<div><div>Sustainable consumption research is largely dominated by Western-centric models that emphasize individual attitudes. However, a critical gap remains in understanding how these models apply to emerging collectivist economies where social norms often override individual preferences. This study bridges this gap by exploring reusable shopping bag consumption among Vietnamese youth, a key demographic in a rapidly developing, collectivist society. Integrating Value-Belief-Norm (VBN) and Consumer Socialization (TCS) theories, we surveyed 343 young consumers in Hanoi, analyzing the data with structural equation modeling (SEM). Results reveal a sharp divergence between attitudinal and behavioral pathways. While internal factors (biospheric values, objective knowledge) positively shape attitudes, actual consumption behavior is not driven by attitudes. Instead, it is directly and strongly predicted by external social factors (namely, peer and family communication). Furthermore, willingness to pay (WTP) is a significant negative moderator of the attitude-behavior link, suggesting WTP may reflect status-seeking motives that decouple behavior from personal environmental values. Our findings contribute a culturally specific model where social pathways override individual attitudes, offering critical implications for policymakers and marketers to shift from awareness campaigns toward leveraging peer networks to drive tangible change.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100461"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798526","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":"Evaluation of basic waste from the lithium industry as a main component of constructive materials","authors":"Silvana K. Valdez ,&nbsp;Agustina Orce Schwarz ,&nbsp;Silvina Emilse Echazú ,&nbsp;María Virginia Quintana","doi":"10.1016/j.clwas.2026.100491","DOIUrl":"10.1016/j.clwas.2026.100491","url":null,"abstract":"<div><div>In recent years, the lithium industry has had strong growth worldwide. One of the lithium resources is the enriched brines in salar flats. To our knowledge, in Argentina, residues of lithium extraction industries are disposed of in the salar flat due to their non-hazardous characteristics (they are mostly salts such as NaCl, KCl, and basic residues from lime precipitation). Due to the large amount of solid waste generated, it is necessary to find mitigation strategies. The objective of this work is to investigate the use of these residues as constructive material. It would be a contribution to mitigate the environmental impact of waste disposal, and fostering recycling and circular economy. This waste, which is mainly magnesium hydroxide and gypsum, was combined with different additives such as cement, paper pulp, froth additives and prickly pear water. Prototypes were physicochemically (chemical composition, density, morphology, and thermal conductivity), and mechanically characterized (compressive strength). This research presents preliminary results. Washed raw material combined with prickly pear water has the lowest density (2.31 g/cm³) and the most airy structure, while it has a thermal conductivity of 0.13–0.16 W/m K, values comparable with those of other combined constructive materials, such as gypsum boards integrated with microencapsulated phase change materials. Additionally, the specimens made from mixtures with ratios of 2 and 2.4 exhibited the highest compressive strength values (1.69–2.02 MPa). Prototypes composed of washed raw material (WRM) combined with cement, achieved values of compressive strength of 6.17 MPa after seven days and maintaining values above 3.78 MPa after 28 days. For all prototypes, their compressive strength values are comparable to those of eco-bricks. These results, though preliminary, are promising. It is a first step to reusing or recycling waste from the lithium industry, contributing to environmental remediation and circular economy.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100491"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147395509","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":"Photocatalytic and antibacterial characteristics of biochar-supported ZnO and TiO2 nanocomposites","authors":"Osman Urper ,&nbsp;Nivedhitha Jothinarayanan ,&nbsp;Mona Sæbø ,&nbsp;Stephen Joseph ,&nbsp;Kaiying Wang","doi":"10.1016/j.clwas.2026.100481","DOIUrl":"10.1016/j.clwas.2026.100481","url":null,"abstract":"<div><div>Coexistence of organic dyes and pathogenic bacteria in wastewater demands integrated treatment, yet affordable, reusable photocatalysts that target both remain limited. In this study, biochar-supported TiO₂ (TiO₂/BC) and ZnO (ZnO/BC) nanocomposites were synthesized via a hydrothermal method to address this dual challenge. The incorporation of biochar enhanced dye adsorption and improved charge separation, leading to high photocatalytic degradation efficiency of methyl orange (up to 92 % and 97 %) under light irradiation. The nanocomposites retained over 80 % and 90 % of their activity after three reuse cycles, respectively for TiO₂/BC and ZnO/BC, demonstrating good stability. Additionally, the materials showed strong antibacterial activity against <em>Escherichia coli</em>, with inhibition rates reaching 90 %. These results confirm the potential of the TiO₂/BC and ZnO/BC nanocomposites as sustainable, multifunctional materials for simultaneous pollutant degradation and water disinfection applications.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100481"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188332","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":"Density and substrate-dependent performance of black soldier fly larvae, Hermetia illucens (Diptera: Stratiomyidae) reared on locally available biowastes in Nepal: Effects on growth, bioconversion, and nutritional composition","authors":"Nisha Kharel ,&nbsp;Bhola Gautam ,&nbsp;Min Raj Pokhrel ,&nbsp;Sundar Tiwari ,&nbsp;Shanker Raj Barsila ,&nbsp;Michael A. Patten ,&nbsp;Himal Luitel ,&nbsp;Prabhat Khanal","doi":"10.1016/j.clwas.2026.100482","DOIUrl":"10.1016/j.clwas.2026.100482","url":null,"abstract":"<div><div>Black soldier fly (BSF) larvae are a promising alternative nutrient source for animal feed, yet operational guidelines for larval density optimization across diverse waste streams available in Nepal have not yet been established. This study evaluated substrate-specific density effects to identify rearing strategies for valorizing locally available biowastes in Nepal. Five-day-old larvae were exposed to vegetable waste, chowmein waste, and chicken feed (control diet) as feeding substrates at four larval densities (1, 3, 5, and 7 larvae/cm²) at a uniform feeding rate (25 mg dry matter/larva/day) across the treatments. BSF prepupal weight decreased with increasing density in chicken feed but increased with density in vegetable and chowmein wastes. Larval survival increased with density in chowmein waste but declined at higher densities in vegetable waste, while bioconversion efficiency showed the opposite pattern. The larval protein content under chowmein waste was generally low, whereas higher larval protein content was obtained under vegetable waste, particularly at lower densities. Conversely, larval fat content was lower under vegetable waste at lower densities but increased with higher larval densities. The results suggest that waste utilization and the nutritional potential of BSF larvae are determined by the density-dependent responses across different substrates. Overall, when targeting BSF larvae as an alternative nutrient source for animal feed, food industry wastes are better utilized at higher larval densities, whereas fiber-rich substrates perform optimally at lower densities, highlighting the need for substrate-specific density strategies in BSF-based biowaste recycling systems.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100482"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188298","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":"Advancements in food waste valorization through ultrasound-assisted extraction: A review","authors":"Mehmet Melikoglu","doi":"10.1016/j.clwas.2026.100487","DOIUrl":"10.1016/j.clwas.2026.100487","url":null,"abstract":"<div><div>The increasing global issue of food waste (FW) presents significant ecological and financial burdens, with approximately 30 % of worldwide food production discarded annually. This substantial volume necessitates innovative approaches to minimize its environmental impact and unlock its inherent value. While conventional extraction methods often suffer from high energy consumption, long processing times, and reliance on hazardous solvents, this review centers on Ultrasound-Assisted Extraction (UAE) as a pivotal green technology for the sustainable recovery of valuable bioactive compounds from diverse FW streams. UAE utilizes acoustic cavitation to improve extraction efficiency, leading to faster processes, reduced energy consumption, and often allowing for environmentally friendly solvents. This study systematically examines recent advancements (2015–2025) in UAE's application across various FW categories, including fruit and vegetable residues, cereal by-products, and other industrial discards. The paper explores current optimization strategies, the integration of innovative green solvents like natural deep eutectic solvents, and the comprehensive characterization of extracted compounds for their functional properties. The potential of these extracts in functional foods, cosmetics, and pharmaceuticals is highlighted. Finally, critical future research avenues are identified, including industrial scaling, thorough techno-economic and life cycle assessments, advanced solvent recovery, and integrated biorefinery concepts. This review aims to consolidate knowledge, accelerating FW transformation into valuable resources for a more circular and sustainable economy.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100487"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188296","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":"Treatment of leachates from the Al Hoceima Landfill using bio-pretreatment and reverse osmosis: Performance, compliance and pollution index (LPI)","authors":"Imane Dira,&nbsp;Yahya El Hammoudani ,&nbsp;Aouatif El Abdouni,&nbsp;Hasnae El Allaoui,&nbsp;Kawthar El Ahmadi,&nbsp;Khadija Haboubi","doi":"10.1016/j.clwas.2026.100484","DOIUrl":"10.1016/j.clwas.2026.100484","url":null,"abstract":"<div><div>Leachate from the controlled landfill at Al Hoceïma (Morocco) has a high pollution load. This study evaluates a process combining biological pre-treatment and reverse osmosis. The raw leachate is characterized by COD ≈ 10,805 mg/L, BOD₅ ≈ 1530 mg/L, NTK ≈ 5253 mg/L (NH₄⁺ ≈ 4827 mg/L), total phosphorus ≈ 58.6 mg/L, TSS ≈ 55.7 mg/L, pH ∼ 8.5 and conductivity ∼ 29.3 mS/cm. Bio-treatment abates ∼66 % COD, ∼54 % BOD₅ and ∼93 % NH₄⁺; reverse osmosis (RO) brings COD to 74.3 mg/L and BOD₅ to 39.7 mg/L. Total phosphorus falls to 0.426 mg/L. The permeate meets Moroccan standards for COD, BOD₅, TP, SS and pH (minor adjustment), but remains non-compliant for total nitrogen (NTK 257 mg/L). The leachate pollution index (LPI) falls sharply (&gt; 80 to &lt; 10). Management of the RO concentrate remains the main challenge.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100484"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188283","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 (de)valuation of solid waste in developing countries: The Brazilian case (2012–2022) after the national solid waste policy","authors":"Gláucia Cardoso de Souza-Dal Bó ,&nbsp;Adriano Michael Bernardin","doi":"10.1016/j.clwas.2025.100457","DOIUrl":"10.1016/j.clwas.2025.100457","url":null,"abstract":"<div><div>Inadequate solid waste management is a global problem, especially in urban areas of developing countries. This problem is worse in countries like Brazil, the fifth largest country in the world with the sixth largest population. Data on waste management in Brazil is produced periodically by two main institutions, one public (SNIS, National Sanitation Information System), linked to the Federal Government, and the other private (ABREMA, Brazilian Waste and Environment Association). Therefore, this study shows the waste management in Brazil, analyzing the Brazilian scenario based on historical series published by SNIS and ABREMA for the 2012–2022 period. The data were compared between both institutions to analyze the evolution of waste management in Brazil over a decade regarding other countries (Latin America and the Caribbean, European Union and BRICS, China, Asia, and the USA). The indicators show the interference of Brazilian municipal management systems and the difficulty of articulation between the different segments of society. Selective collection programs and processing units are not capable of increasing the reuse rates of recyclable materials in Brazil. Landfills are still active in some regions and the logistics of the recycling chain depends fundamentally on formal and informal waste collectors, who work under extremely vulnerable conditions. Therefore, increasing recovery rates for recyclable materials fundamentally depends on the inclusion of waste collectors in regular and formal systems and, consequently, on public-private partnerships and regulations that recognize and guarantee the rights of this labor group. Likewise, for the PNRS to be effectively implemented, the planned actions and targets must be periodically monitored by the competent public authorities.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100457"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749651","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":"Effect of moral reasoning and fair labour concerns on sustainable clothing selection: An analysis of the moderating role of Twitter exposure","authors":"Gustavo Barrera-Verdugo,&nbsp;Daniel Durán-Sandoval","doi":"10.1016/j.clwas.2026.100471","DOIUrl":"10.1016/j.clwas.2026.100471","url":null,"abstract":"<div><div>The high level of unsustainable clothing waste poses a significant threat to social and environmental sustainability in South America. University students constitute a segment of regular consumers of unsustainable clothing associated with fast fashion who are frequently exposed to social media. This study aims to enhance comprehension regarding personal factors influencing clothing consumption, by examining the impact of moral reasoning and labour conditions valuation on sustainable clothing selection, analysing the moderating effect of the frequency of reading and posting messages on Twitter. A total of 233 Chilean university students enrolled in business and engineering programmes completed an online self-report survey. The survey responses were analysed using Partial Least Squares Structural Equation Modelling and Multigroup Analysis. The results demonstrated that moral reasoning and appreciation of sustainable working conditions have a positive influence on sustainable clothing selection, such as choosing clothes made from organic materials and with labels that support the absence of pollutants. Notably, reading and posting messages on Twitter showed an important moderating effect on these proposed relationships. This empirical evidence validates the function of social media as a dynamic communication platform that has a significant influence on the selection of sustainable clothing. The present study provides evidence to support the need to improve moral education and highlights the importance of using social media platforms to promote sustainability among higher education students.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100471"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976990","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":"Experimental evaluation of the Nano glass effect on the mortar's behavior: Durability, water penetration and bond strength","authors":"Bilal Kamal Mohammed ,&nbsp;Rafah Rasheed Abdulmajeed ,&nbsp;Hawdin Ismael Ibrahim ,&nbsp;Hersh F. Mahmood ,&nbsp;Bzhar Muheddin Mohammed ,&nbsp;Twana Othman M. Amin ,&nbsp;Soran Abdrahman Ahmad","doi":"10.1016/j.clwas.2025.100465","DOIUrl":"10.1016/j.clwas.2025.100465","url":null,"abstract":"<div><div>The negative effect of using cement in the concrete and mortar on the environment through the energy usage, waste clinker, high rate of carbon dioxide gas emission to the environment, make the investigation for finding new material to be used as replacement or partially replacement of cement very necessary for saving Environment and community. One of the new fields that consider as the daily topics for the researchers is the usage of nano materials, which make the used materials higher reactive compare to the powder size. Obtaining Nano material from solid wastes in the land that has pozzolanic ability will be twice advantage. This study examines nano glass powder as a partial cement replacement in mortar across eight mix ratios (0–50 %), focusing on durability, bond strength, and water penetration. Results show that nano glass improves bond strength with masonry units, though optimal content varies by type. At 15 % replacement, chloride resistance increased significantly, reducing charge passed by 40 %. Electrical conductivity dropped at lower replacement levels, reaching a minimum at 15 %, indicating better durability through reduced ionic movement. Water penetration depth decreased consistently, with an 85.7 % reduction at 50 % replacement. Based on findings, incorporating up to 10 % nano glass in mortar offers the best combination of durability and bonding performance, especially for plastering or masonry joint applications.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100465"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145926386","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}