Cleaner Waste Systems最新文献

{"title":"Engaging campusians for sustainability: A Campus Living Lab experiment on waste sorting behaviour in university offices","authors":"Claudia Stuckrath,&nbsp;Maryse M.H. Chappin,&nbsp;Ernst Worrell","doi":"10.1016/j.clwas.2026.100533","DOIUrl":"10.1016/j.clwas.2026.100533","url":null,"abstract":"<div><div>Clean waste streams are crucial for material valorisation, which remains a challenge shaped by citizens’ daily practices. This study examines waste-sorting behaviour in a university office and assesses the impact of a co-created Campus Living Lab (CLL) experiment designed to improve it. The intervention, “Sort-it-out\", was gamified and co-created with campusians (the campus's citizens). Observed sorting behaviour was assessed via waste scans, and the results were explained by conducting a survey. The survey was grounded in the Theory of Planned Behaviour (TPB), and had a sorting task, from which we derived waste sorting performance (WSP), a new dependent variable. It was analysed using three dependent variables and two regression models: WSP, waste sorting intention (WSI), and waste sorting behaviour (WSB). Results of the waste scans showed consistently high correct disposal for organic and paper streams, moderate improvements for plastics and drink cartons (PD), and minor declines in general waste sorting. Regression results indicated that WSI was primarily explained by attitude (ATT), and that WSB was explained by ATT and perceived behavioural control (PBC). However, TPB constructs had limited predictive power for WSP, suggesting that other factors, such as professional background, may influence it. The findings highlight the value of co-created, context-specific interventions to raise awareness and the importance of knowledge in waste sorting behaviours.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"14 ","pages":"Article 100533"},"PeriodicalIF":3.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183793","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":"Linking household food management practices and food waste: Evidence from Latvian households","authors":"Raimonda Soloha ,&nbsp;Vineta Kleinberga ,&nbsp;Elina Dace","doi":"10.1016/j.clwas.2026.100534","DOIUrl":"10.1016/j.clwas.2026.100534","url":null,"abstract":"<div><div>Food waste prevention is incentivised at the EU policy level, yet household-level implementation remains uneven, and the role of everyday food management in food wasting behaviour is insufficiently understood. This study analyses data from a nationally representative sample of Latvia. In this study, full meal manager, partial meal manager and meal enjoyer roles were inductively formed based on respondent involvement in planning, purchasing and preparing food. A substantial share of respondents reported generating no food waste (18.6%) or never discarding edible food (30.5%), while economic savings emerged as the dominant motivation for preventing waste. Associations between food management role and awareness, attitude, motivation, self-reported actions, and supported measures for food waste prevention were examined using Pearson’s chi-square test of independence. Full meal managers were more likely to report concern about throwing out food and to practice preventive actions, such as checking household stocks and planning meals. In contrast, meal enjoyers more frequently reported not feeling bad about wasting food, selecting “nothing” as a motivation, and not carrying out specific prevention actions. These patterns suggest that detachment from food planning and preparation is associated with lower awareness of food waste and reduced engagement in prevention. Across all roles, respondents expressed uncertainty about measures that could support food waste prevention, indicating limited perceived relevance of measures at the household level. Overall, the findings demonstrate that food management roles exhibit detectable but modest differences for understanding household food wasting behaviour and for designing targeted and practically relevant prevention strategies. Aligning policy incentives with the realities of how food is managed in everyday life may enhance the effectiveness of food waste prevention incentives.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"14 ","pages":"Article 100534"},"PeriodicalIF":3.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183798","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":"A multilevel conceptual model of resource transformation in biogas-based industrial symbiosis","authors":"Niklas P.E. Karlsson ,&nbsp;Anna M. Hansson ,&nbsp;Marie Mattsson ,&nbsp;Jeaneth Johansson","doi":"10.1016/j.clwas.2026.100537","DOIUrl":"10.1016/j.clwas.2026.100537","url":null,"abstract":"<div><div>This study develops a multilevel conceptual model of resource transformation in biogas-based industrial symbiosis (IS). It examines how residual flows such as digestate, carbon dioxide (CO₂), and heat become strategic resources through coordinated technological, organisational, and institutional processes. Using bibliometric science mapping of 228 peer-reviewed articles (1990–2024), combined with theory-driven interpretation, the study identifies dominant research patterns and underlying structural relationships in the field. The analysis reveals three cross-cutting mechanisms—resource conversion, coordination, and institutional stabilisation—that structure resource transformation across micro-, meso-, and macro-levels. The findings show a shift in the literature from technology- and efficiency-oriented perspectives toward systemic, multi-actor, and policy-embedded understandings of circular innovation. Building on this, the study develops a mechanism-based conceptual synthesis that explains how value emerges through the alignment of technological processes, inter-organisational networks, and institutional conditions. The study further illustrates how Natural-Resource-Based View (NRBV) concepts can be applied in a multilevel context, showing that VRIN (valuable, rare, imitable, non-substitutable) characteristics are not inherent properties of resources but emerge through coordinated processes across system levels. Finally, it proposes analytically derived propositions and guiding principles for practice that highlight the conditions under which IS systems may develop and scale.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"14 ","pages":"Article 100537"},"PeriodicalIF":3.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183794","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":"Enhancing agricultural water resource management: Colour coding system for water distribution systems","authors":"Dexter Fulgar,&nbsp;Tracy Muller,&nbsp;Simon Lott","doi":"10.1016/j.clwas.2026.100535","DOIUrl":"10.1016/j.clwas.2026.100535","url":null,"abstract":"<div><div>This paper proposes a colour coding methodology for agricultural water distribution systems to strengthen wastewater characterisation and regulatory alignment. Colour coding systems are widely used in other industries. There is no standardised framework for agricultural water colour-coding that ensures perceptual clarity and regulatory acceptance. This limits consistency and reliability in classification. To address this gap, existing standards and practices were reviewed to identify limitations in the classification, collection, storage, recycling, reuse, and disposal of wastewater in agriculture. This study develops and validates a framework by integrating existing standards, perceptual differences (ΔE), and common colour associations. The colours were validated in the LAB colour space, with all values exceeding 10, indicating that the colours are readily distinguishable when printed on white paper or viewed digitally. Two case studies, an intensive livestock facility and a winery, demonstrate the practical application of the system in real-world settings. The engineering consultancy EnviroAg Australia Pty Ltd has implemented these colour codes across its technical and engineering documentation for clients nationwide. The framework achieved complete observed approval, with a 95% confidence interval for the true success probability ranging from 0.82 to 1.00, demonstrating its reliability and practical robustness. The methodology improves interpretive accuracy, reduces ambiguity, and enhances consistency in planning, auditing, and communication among stakeholders. It also considers users with colour vision deficiencies and supports optional integration with the ColorADD system to improve accessibility. Overall, the approach strengthens agricultural water resource management and provides a scalable framework for broader governance and regulatory integration.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"14 ","pages":"Article 100535"},"PeriodicalIF":3.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183797","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":"Physical, mechanical and chemical characterization of a composite from leather shavings and scrap office paper for potential packaging application","authors":"Anggie Thalya Villanueva-Linares ,&nbsp;Jose Alberto Aguilar-Franco ,&nbsp;Marvin Marco Chambi-Peralta ,&nbsp;Carlos Renzo Rivera Calcina ,&nbsp;Teófilo Donaires Flores ,&nbsp;Jeanette Fabiola Díaz-Quintanilla","doi":"10.1016/j.clwas.2026.100469","DOIUrl":"10.1016/j.clwas.2026.100469","url":null,"abstract":"<div><div>A composite material with potential applications in the packaging industry was developed using leather shavings, scrap office paper, thermoplastic resin, and distilled water. The production process consisted of raw material preparation, the production of recycled paperboard sheets, and sheet finishing. An extreme vertex mixture design generated 13 samples to optimize the proportions of paper, leather shavings and resin, using tensile strength (ASTM D828–22) as the dependent variable. The optimal recycled paperboard formulation was 70 wt% paper, 5 wt% leather shavings, and 25 wt% resin. Physical tests were conducted to measure grammage (ISO 536), thickness (ISO 534), moisture content (TAPPI T 412), and water absorption (ISO 535–2023). Chemical analyses included scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) with attenuated total reflectance (ATR), thermogravimetric analysis (TGA), derivative thermogravimetry (DTG) and elemental chemical composition of the composite material. Compared with reference paperboard, the recycled paperboard exhibited lower moisture absorption but also reduced tensile strength. FTIR spectra confirmed cellulose-related bands and revealed the presence of collagen from leather, while TGA/DTG curves indicated slight shifts in degradation temperatures, reflecting reduced thermal stability due to leather incorporation. The recycled paperboard shows potential for sustainable packaging applications that demand moderate mechanical performance. However, the lower thermal stability and tensile strength may limit its use in high-stress demanding applications.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100469"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145926475","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":"Magnetically-responsive starch nanocomposites for potential recovery of plastic waste: Characterization of starch/clay/Fe3O4/TiO2 film","authors":"Armin Rasouli ,&nbsp;Iman Shahabi-Ghahfarrokhi ,&nbsp;Majid Namdari ,&nbsp;Maryam Shaterian","doi":"10.1016/j.clwas.2026.100492","DOIUrl":"10.1016/j.clwas.2026.100492","url":null,"abstract":"<div><div>This study addresses the environmental and economic challenges of plastic waste recycling by developing magnetically recyclable starch-based bionanocomposites (SCFT). The hypothesis that intercalating Fe₃O₄ and TiO₂ nanoparticles within a layered clay matrix (CFT) would maintain magnetism while reducing dark coloration was tested. Structural analysis confirmed SCFT formation, with uniform dispersion at low CFT content and aggregation at higher concentrations. Increased CFT content reduced moisture absorption, water solubility, and contact angle, but did not significantly alter mechanical properties and water vapor permeability. The composites retained a dark color, indicating the intercalation strategy was insufficient to overcome this limitation. However, SCFT films exhibited effective magnetic separation and UV-blocking capability. Therefore, while clay intercalation does not mitigate the dark coloration of the magnetic particles, it yields a functional, magnetically recoverable packaging material with UV-blocking properties.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100492"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147395511","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":"Water hyacinth vermicompost tea supplementation improves the productivity of fish and vegetables in aquaponics system in Batu, Ethiopia","authors":"Gemechu Tolera,&nbsp;Abebe Getahun,&nbsp;Akewake Geremew,&nbsp;Seyoum Mengistou","doi":"10.1016/j.clwas.2025.100451","DOIUrl":"10.1016/j.clwas.2025.100451","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The growing human population, resulting from rapid urbanization, is leading to a shortage of land for food production. This has led to the emergence of various production methods, such as Aquaponics, which combine aquaculture and hydroponics in a single recirculating system. Aquaponics is a pioneering farming system that involves the production of both plants and fish. This research was carried out in an aquaponic system that is part of the Batu Fish and Other Aquatic Life Research Center, Oromia Regional Agricultural Research Institute (longitude 88º33' E, latitude 23º24' N) from the start of December 2021 to the end of February 2022. A study was conducted to evaluate the use of Water hyacinth-based liquid fertilizer in aquaponics conditions and investigate the effects of foliar applications of compost tea on lettuce growth and yield, compared to a hydroponic system. The experimental setup consisted of a fully operational aquaponics system, featuring fish tanks, hydroponics, bacteria, fish, and plants as its main components. To effectively conduct aquaponics production, it's crucial to monitor water parameters such as pH, dissolved oxygen, electrical conductivity, and temperature. In three rearing tanks, each with a diameter of 1.2 m, a depth of 0.75 m, and a volume of 840 L, Nile tilapia fingerlings weighing an average of 20 g were stocked at a combined biomass of 3.2 kg. They were fed at 3 % of their body weight with a diet that contained 35 % crude protein. The tanks were linked to replicate plant trays, and two hydroponic containers were also connected to replicate plant trays. After 21 days, lettuce seedlings were transplanted into both aquaponics and hydroponics systems. Foliar nutrient applications began 30 days post-transplant using five treatments: FAA (T1), UA (T2), LSA (T3), UH (T4), and FAH (T5), with biweekly sprayings. The result of water quality parameters recorded during the experiment was permissible except for pH and EC in the aquaponic system. Variance analysis (ANOVA) and Duncan’s test (p &gt; 0.05) revealed that the number of leaves was similar between systems, but significant differences in leaf fresh weight (p &lt; 0.05) (p &lt; 0.05) were observed. T1 showed the highest weight at 82.80 ± 2.353 g, while T2, T3, T4, and T5 had lower weights. Significant differences in root weights were also noted, with T5 leading at 23.60 ± 1.088 g. The average number of leaves per treatment was around 37 for T1 and T5. The ash content of the lettuce from both systems ranged from 20 % to 33 %. As the data on fish growth indicate, the final fish weight was not significantly different (p &gt; 0.05) across all treatments. The results suggest that foliar application can effectively address nutrient deficiencies, promoting better growth and yield in both aquaponic and hydroponic systems. Generally, the study found that using water hyacinth vermicompost tea in an aquaponics system in Batu, Ethiopia, helps both fish and vegetables grow b","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100451"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749646","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":"Life Cycle Assessment of plastic film recycling comparing kerbside and separate collection on laboratory and industrial level","authors":"Lukas Zeilerbauer ,&nbsp;Johanna Langwieser ,&nbsp;Karin Fazeni-Fraisl ,&nbsp;Magdalena Pflügl ,&nbsp;Johannes Lindorfer ,&nbsp;Dominik Schneeberger ,&nbsp;Christian Ehrengruber ,&nbsp;Nikolai Kuhn ,&nbsp;Hannah Aster ,&nbsp;Christian Paulik ,&nbsp;Jörg Fischer","doi":"10.1016/j.clwas.2026.100486","DOIUrl":"10.1016/j.clwas.2026.100486","url":null,"abstract":"<div><div>Life cycle assessment was used to analyse and compare the environmental impacts of an individual drop-off system for plastic waste recycling against a kerbside collection system. Despite good primary data, several methodological questions were identified. Allocation by mass of transported waste plastics film revealed the yellow bag to be the superior alternative over the individual drop-off. However, results were sensible to methodological choices. Afterwards, the collection results were extended to 1 kg of recycled LDPE, using laboratory and industrial recycling scenarios. The industrial scenario yielded much lower impacts, proving that laboratory scale recycling is hardly able to predict industrial results. Findings were confirmed by statistical analysis from 1000 Monte Carlo runs by using discernibility and overlap area analysis. Ultimately, 23 possible recycling product designs were derived, using mechanical properties obtained from the laboratory and were compared to four commercially available benchmarks. Properties were hard to match from the laboratory recycling design, producing mostly inferior LCA results.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100486"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188281","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":"How a certification turned sewage sludge from an undesirable waste to a demanded good","authors":"Linus Ekman Burgman","doi":"10.1016/j.clwas.2026.100495","DOIUrl":"10.1016/j.clwas.2026.100495","url":null,"abstract":"<div><div>Reducing the disposal of wasted materials and increasing their usage has been argued by international organizations like the UN to be pivotal for sustainable production and consumption. Sewage sludge is such a material that could replace mineral fertilizers and increase humus in the soil. However, research on sewage sludge (and other waste) utilisation has identified that the main barrier is to raise demand and establish a market. This paper focuses on the remarkable increase in agricultural use of sewage sludge from 6 % to 60 % between 2002 and 2024 in Sweden. The hypothesis is that the establishment of a certificate (Revaq) for wastewater treatment plants played an important role in marketing sewage sludge. Based on minutes from the Revaq steering board, the paper uses qualitative analysis to scrutinise how exchange, representation, and normalisation of sewage sludge were practiced. The hypothesis is partially confirmed, where the establishment of the certificate’s stricter rules gained farmers’ support. However, and more importantly, it is not by establishing the certificate alone that support increased, but through relationship building and negotiations to bridge the tensions between market-shaping practices. Revaq had to balance the number of treatment plants with the strictness of rules, a human excrements-only norm with societal embeddedness, and supporting increased agricultural use while enforcing certified sludge as the only option. Understanding how a certificate can enhance waste-derived materials marketing is key to reducing the dependence on new raw materials.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100495"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147395512","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 impacts caused by food waste: A case study in Brazilian supermarkets","authors":"Suzana Márcia Marangoni ,&nbsp;Pedro Brancoli ,&nbsp;Andréa Rossi Scalco","doi":"10.1016/j.clwas.2026.100468","DOIUrl":"10.1016/j.clwas.2026.100468","url":null,"abstract":"<div><div>The growing global demand for food, alongside with an increase in the environmental pressures and food insecurity, highlights the urgency of addressing food loss and food waste. This study investigates the magnitude and environmental impact of fruit and vegetable waste in three Brazilian supermarkets located in the State of São Paulo. Using waste composition analysis and life cycle assessment, 2160.3 kg of unsold fruit and vegetables were quantified over one week per store, corresponding to an estimated 2366.3 kg of carbon dioxide-equivalent emissions. The products with the highest waste were bananas, tomatoes, cabbage, potatoes, and oranges — accounting for nearly half the total waste mass. Emissions were highest for fruits, followed by vegetables, and tubers, bulbs and roots. Unlike many studies that rely on secondary data or literature, this research provides original, primary data from supermarket waste, offering valuable insights into retail-level food waste and its environmental consequences. The study emphasizes the importance of targeting high-impact waste categories and implementing context-specific interventions, including improved cold chain infrastructure, employee training, and flexible product specifications. Findings offer actionable insights for retailers to reduce food loss and food waste and associated emissions, contributing to national and international sustainability goals. The integration of waste quantification with life cycle assessment represents a robust approach to identifying environmental hotspots and informing food loss and food waste mitigation strategies in supermarket retail.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"13 ","pages":"Article 100468"},"PeriodicalIF":3.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188328","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}