Cleaner Waste Systems最新文献

{"title":"Performance evaluation of bamboo reinforced concrete slab: A comparative study between fibre reinforced mix and shape optimised composite","authors":"Balamurali Kanagaraj ,&nbsp;Arkishembha Sohliya ,&nbsp;G. Jayakumar ,&nbsp;N. Anand ,&nbsp;Eva Lubloy","doi":"10.1016/j.clwas.2025.100409","DOIUrl":"10.1016/j.clwas.2025.100409","url":null,"abstract":"<div><div>The demand for sustainable alternatives to conventional steel reinforcement in concrete remains a major challenge, particularly due to steel’s high cost, energy-intensive production, and susceptibility to corrosion in aggressive environments. While bamboo has been explored as a renewable reinforcement, its performance within advanced geopolymer matrices and optimised slab configurations remains underexplored. This study addresses this gap by experimentally evaluating the structural behaviour of four types of bamboo reinforced slabs: cement concrete (BCC), geopolymer concrete (BGC), fibre-reinforced geopolymer concrete (BFRGC), and topology-optimised geopolymer concrete (TBGC). The slabs were tested under uniformly distributed loading, and their compressive strength, bond performance, stiffness, ductility, deformability factor, and energy absorption capacity were assessed. Results revealed that BFRGC exhibited superior performance, achieving 13.6 % higher compressive strength, 32 % greater ductility, and 33.7 % higher energy absorption capacity compared to BGC, while BCC demonstrated the most brittle response. TBGC, although material-efficient, showed reduced stiffness (7.9 % lower than BGC) and energy absorption (24.6 % lower). These findings highlight the potential of hybrid fibre-reinforced geopolymer concrete with bamboo strips to enhance load-carrying capacity and post-cracking behaviour, thereby advancing the use of natural, sustainable reinforcement in structural applications.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100409"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145094735","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 mediating role of environmental performance between green supply chain management and organizational market performance: Digitalization as a key dimension (In the case of the Ethiopian manufacturing industry)","authors":"Jemal Mekasha Yimer ,&nbsp;Aschalew Degoma Durie ,&nbsp;Abiot Tsegaye Kibiret","doi":"10.1016/j.clwas.2025.100376","DOIUrl":"10.1016/j.clwas.2025.100376","url":null,"abstract":"<div><div>Companies are increasingly exploring green supply chain management practices to integrate environmental considerations into their supply chains. However, little is known about the mediating role of environmental performance between green supply chain management practices and market performance. This research examines the mediating role of environmental performance in the relationship between green supply chain management practices and market performance. Structural equation modeling was employed to test the proposed hypotheses using a sample of 306 companies from a cross-sectional survey. Moreover, an independent sample T-test was also utilized to compare the practice level of two industries. The results indicate that digitalized green supply chain practice and green distribution directly improve firms' market performance, while sustainable packaging, green purchasing, and green manufacturing influence market performance indirectly through environmental performance. The study suggests that the primary driver for integrating digitalization in the Ethiopian manufacturing industry is economic benefits rather than environmental sustainability. Therefore, manufacturing firms should also consider the benefits of digitalization on their sustainability performance. Further, manufacturing firms should not solely expect immediate economic, market, and financial performance improvement from GSCM, but should recognize the long-term benefits that result from improved environmental sustainability.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100376"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724739","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 and economic impact assessment of single-use laboratory plastic waste: A case study","authors":"Yi Huan Tan ,&nbsp;Hwai Chyuan Ong ,&nbsp;Raja Affendi Raja Ali ,&nbsp;Lai Ti Gew","doi":"10.1016/j.clwas.2025.100389","DOIUrl":"10.1016/j.clwas.2025.100389","url":null,"abstract":"<div><div>Research labs rely on disposable plastics for sterility, safety, and affordability, but their environmental and economic impact has been largely overlooked. While the impact of single-use plastics is well-known, laboratory waste poses an additional challenge due to necessary treatment processes. Hence, this study investigated both the environmental and economic impact associated with single-use plastic waste management in a university laboratory, serving as a case study for Southeast Asia. A retrospective analysis was conducted on laboratory plastic waste management between 2014 and 2023 at a Malaysian university. Three waste management methods, i.e. incineration, landfilling with microwave pre-treatment, and landfilling with ozone pre-treatment, were implemented at consecutive intervals. Environmental impact was assessed by quantifying the GHG emissions in terms of carbon dioxide equivalent (CO₂eq) emissions, while economic assessment was evaluated based on invoiced costs. A total of 29,180.11 kg of single-use plastic waste resulted in 46,420.08 kg CO₂eq emissions and a cumulative disposal cost of RM 84,890.49. Among the three methods, landfilling with ozone pre-treatment demonstrated the lowest environmental impact (1.55 kg CO₂eq/kg) and cost (RM 2.79/kg). Direct emission from the end-of-life stage was the main source of GHG emissions, while disposal fees represented the largest portion of total costs. In light of these findings, it is crucial for universities and research institutions to recognise the environmental and economic impact of laboratory single-use plastics. This case study will serve as a foundation for advancing pre-treatment technologies and future end-of-life solutions.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100389"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144843005","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":"Utilization of Prunus cerasoides shell (PCS) as sustainable substitute for natural aggregates in concrete","authors":"Laxman Bhujel,&nbsp;Prabhat Baral,&nbsp;Sagar Ranabhat,&nbsp;Saroj Subedi,&nbsp;Tamanna Aalam,&nbsp;Tek Raj Gyawali","doi":"10.1016/j.clwas.2025.100348","DOIUrl":"10.1016/j.clwas.2025.100348","url":null,"abstract":"<div><div>The management of <em>Prunus cerasoides</em> shells (PCS) has become increasingly important due to their slow degradation, obstruction of plant germination, and the risk of accidents for pedestrians. This study investigates the effects of replacing natural coarse aggregate (NCA) with PCS at 0 %, 10 %, 20 %, 30 %, and 40 % by weight on the physical, mechanical, durability, and thermal properties of M20-grade concrete. The results showed a linear decrease in density, mechanical strengths, and elastic modulus, while water absorption increased progressively with increasing PCS content. Comparable compressive strength and M20-grade performance were achieved with 10 % and 20 % PCS replacements, respectively. Concrete containing PCS exhibited slightly higher sensitivity to elevated temperatures in terms of compressive strength loss compared to conventional concrete. Notably, sustainable structural lightweight concrete—with a compressive strength above 17.5 MPa—was attainable at 40 % PCS replacement, achieving 19.5 MPa. These findings demonstrate that substituting NCA with PCS not only addresses waste management issues but also conserves natural resources and supports the development of environmentally friendly concrete.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100348"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596265","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":"Optimising waste management technologies through statistical entropy analysis: A quantitative approach to enhanced resource recovery","authors":"Ekaterina Korotenko ,&nbsp;Josef Jadrný ,&nbsp;Helmut Rechberger ,&nbsp;Michal Šyc","doi":"10.1016/j.clwas.2025.100399","DOIUrl":"10.1016/j.clwas.2025.100399","url":null,"abstract":"<div><div>The recovery of valuable materials from waste streams is essential to achieving global sustainability. Despite the variety of waste management technologies available, systematic and quantitative methods for evaluating and optimising their performance remain limited. This study addresses this gap by focusing on the optimisation of waste management technologies through the statistical entropy analysis (SEA).</div><div>For the case study, the FLUWA® (fly ash washing) technology for recovering Zn, Pb, and Cu from municipal solid waste incineration (MSWI) fly ash was chosen. Four technology configurations, varying in material intensity and metal recovery efficiency, were analysed. The assessment used a comprehensive dataset from long-term monitoring (2018–2022), complemented by laboratory and pilot-scale experiments. It included the chemical composition and properties of the technological streams. After statistical data treatment (removal of outliers, calculation of mean values and standard deviations), a material flow analysis (MFA) was performed. Subsequently, SEA was applied to quantify changes in statistical entropy (SE).</div><div>The results show that the basic configuration of FLUWA® increases SE (ΔH_METALS=+3.4 %), indicating dilution and loss of target metals. Optimisation of the extraction step led to substantial entropy reductions (ΔH_METALS =−16.3 % and ΔH_METALS=−23.8 % in two optimised cases), reflecting enhanced metal recovery and reduced dissipation. Additionally, coagulation and flocculation were found to have no effect on SE (ΔH_METALS=0), suggesting that these steps may be redundant from the perspective of metal recovery.</div><div>By identifying inefficiencies and opportunities for process enhancement, SEA supports the transition toward more effective waste management systems and promotes the circular economy.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100399"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913564","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 and health risks of nanowaste as an emerging contaminant: A systematic review","authors":"H.A. Abu-Qdais ,&nbsp;A.I. Kurbatova","doi":"10.1016/j.clwas.2025.100385","DOIUrl":"10.1016/j.clwas.2025.100385","url":null,"abstract":"<div><div>The huge production amounts and use of nanomaterials has led to the generation of an emerging type of waste stream that contains materials with nanoscale dimension and known as nanowaste. Once released into the environment, such waste can pose risks to the public health and environment. Due to their unique properties, the conventional risk assessment approaches cannot be adopted in nanowaste risk assessment, which is a serious challenge facing the regulatory process. This study conducted a systematic literature review to provide insight into the current scientific knowledge on nanowaste sources, release, pathways and the risks associated with their treatment and disposal. Data extracted from 37 articles that published during 2011–2023 was subjected to analysis following PRISMA statement. The results showed that there is an increasing trend in publications until the year 2018. Most of the published articles were from EU countries, where such articles stemmed from projects funded by the EC on Nano safety. Nanowaste may be released from point (single) and non-point (multiple) sources. Once released into the environment, nanowaste is subjected to partitioning and follow different pathways to environmental systems. The lack of regulatory requirements, standard characterization methodologies and the continuous production of new nanoproducts makes the quantification of the generated nanowaste a hard task. Such knowledge gaps increase the level of uncertainty in the risk assessment and leads to poor risk management and communication. This calls for the need in changes in the risk assessment framework of nanowaste to address their risk in a more systematic and accurate manner. Adopting stochastic modelling of the risk assessment parameters will lower the uncertainty levels.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100385"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831329","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":"Motivating recycling behaviour: The role of deposit return systems and collection point design","authors":"Marie Hartmann,&nbsp;Elena Cavagnaro","doi":"10.1016/j.clwas.2025.100334","DOIUrl":"10.1016/j.clwas.2025.100334","url":null,"abstract":"<div><div>This preliminary applied research study explores the potential effectiveness of Deposit Return Systems (DRS) in encouraging recycling behaviour in a HORECA (Hotel, Restaurant, Café) setting. A DRS starts with the introduction of a deposit collection point to facilitate that the guests return the deposit-levied packaging that they purchased on the business premise. The central research question in this study addresses how to lead guests to proper recycling behaviour. Recycling behaviour is conceptualized as disposing of deposit cans and bottles in specific collection points. Although the success of sustainable initiatives depends both on guest behaviour and on product design, these two angles are seldom applied together in general and in HORECA in particular. To answer the central question, we combined behavioural sciences with design for sustainable behaviour in an exploratory manner. Consequently, we introduced different prompt communication strategies and deposit collection point nudges, to explore which combination is most successful in leading guests to proper recycling behaviour in a canteen setting. Examples of strategies are visual prompts and verbal instructions. To measure the success of the nudges and prompts two measures were used: the deposit-levied packaging that ended in the collection point or in the garbage bin was counted; the level of recycling contamination. Chi-square was applied to analyse the data. The study highlights that the presence of a collection point increases guests’ motivation to collect deposit-levied packaging separately. The results show that the design of the collection points played a crucial role in reducing recycling contamination, as crate shaped collection point resulted in less recycling contamination compared to a bin shaped one. The findings suggest that, with proper product design and communication, DRS can be effectively applied not only in school canteens but also in cafes, catering services, and other HORECA businesses. The study uniquely employed an exploratory approach in a real-life setting in a university canteen to test the different behavioural interventions.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100334"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366409","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 systematic review of waste management practices in the healthcare sector","authors":"Haneen Alrabiah,&nbsp;Vian Ahmed,&nbsp;Zied Bahroun","doi":"10.1016/j.clwas.2025.100400","DOIUrl":"10.1016/j.clwas.2025.100400","url":null,"abstract":"<div><div>The healthcare sector is a large, complex sector with many facilities, services, and personnel. The waste generated from the healthcare sector makes up a considerable amount of total solid waste generated in many countries, requiring rigorous regulations and policies to deal with it. This paper conducts a systematic review of the literature published in Healthcare Waste Management (HCWM), highlighting the apparent themes and trends observed in the literature, as well as gaps and possible future directions. The methodology used for this systematic review follows the PRISMA guidelines, including literature search, screening, bibliometric analysis, and content analysis. The dataset for this study comprises peer-reviewed papers on healthcare waste management published between 2019 and 2023, resulting in a total of 100 papers after screening and excluding irrelevant ones. The bibliometric analysis reveals that the most used keywords include healthcare practices, COVID-19 impact, and staff knowledge; indicating those may be highly researched themes. Additionally, the content analysis conducted validates the findings of the bibliometric analysis and reveals other trends gaining interest among researchers; those trends included sustainability, technological innovations, and circular economy. The gaps in literature are identified as well, including a lack of waste management policies for pharmaceutical waste and for waste generated from home patients. This paper adds to the body of art by reviewing the available literature using a systematic approach, ensuring relevant themes are highlighted and discussed to further advance research in the field of HCWM.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100400"},"PeriodicalIF":3.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144987986","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":"Pineapple peel waste enhances manure protein degradation: Statistical optimization","authors":"Noori M. Cata Saady,&nbsp;Tasnia Hasan Nazifa","doi":"10.1016/j.clwas.2025.100335","DOIUrl":"10.1016/j.clwas.2025.100335","url":null,"abstract":"<div><div>Animal farms generate large amounts of manure suitable as feedstock for producing biogas by anaerobic digestion (AD). However, AD encounters difficulties when manure contains excessive protein levels. This study investigates using pineapple peel waste (PPW)-derived protease enzyme (bromelain) to enhance manure’s protein degradation and improve biogas production. It aims to improve the degradation of manure protein and mitigate the inhibitory ammonia accumulation problem. The study applied a Box–Behnken design and analyzed the data using the Response Surface Methodology (RSM) to optimize protein reduction and diminish ammonia levels. It examined the single and two-way impacts of parameters such as manure dosage, PPW dosage, and degradation duration. The statistically derived optimal degradation conditions of 9 g VS_manure L⁻¹, 4 g VS_PPW L⁻¹, and 48 h degradation time achieved 36 ± 0.25 % protein reduction. However, the highest reduction of ammonia nitrogen (NH₃-N) of 72 ± 0.48 % was achieved under the optimal combinations of 6.5 g VS_manure L⁻¹, and 7 g VS_PPW L⁻¹ , and 48 h. Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM) analyses revealed changes, particularly weakening and cleavage of hydrogen and amide I, II, and III bonds, confirming hydrolyzed manure's protein structural and morphological alterations. The hydrolyzed substrate characterization, paired with the rigorously developed statistical data, strongly supports using PPW as an effective agent to address the ammonia accumulation challenges. The PPW significantly and effectively enhances protein breakdown within manure, potentially increasing hydrogen and methane generation during AD.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100335"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307550","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":"Appraisal of heavy metals leaching from waste materials building blocks","authors":"Md. Arif Hossen ,&nbsp;G M Sadiqul Islam","doi":"10.1016/j.clwas.2025.100368","DOIUrl":"10.1016/j.clwas.2025.100368","url":null,"abstract":"<div><div>Industrial waste can release heavy metals into the environment, posing a significant threat to the ecosystem. There is not enough information on the leaching behaviour of industrial waste when used in the concrete system. The study aimed to determine the leaching of heavy metals from industrial waste encapsulated in building blocks. A semi-dynamic tank and Batch leaching method were used to identify leaching characteristics. X-ray Fluorescence (XRF) and X-ray Diffraction (XRD) techniques were used to characterize raw materials. The total concentrations of heavy metals in the raw materials were observed in the following order: Fe &gt; Mn &gt; Cu &gt; Zn &gt; Cr &gt; Cd &gt; Pb. It is crucial to highlight that the leached heavy metal content from the examined two building blocks was within the threshold values set by the Bangladesh Standards and the European Union for discharge into the environment. The percentages of Cr released were the highest among all heavy metals. Based on semi-dynamic tank leaching data, log-log plots of cumulative heavy metal leaching versus time revealed that matrix dissolution-controlled Fe, Mn, and Cr leaching, while diffusion-controlled Zn, Cu, and Cd leaching. Batch leaching experiments showed that as the pH of the solution shifted from acidic to alkaline, the leaching rate decreased for all the examined heavy metals, except for Cr and Cd. Since the rate of heavy metals leaching was found to be very small relative to total concentrations, it can be claimed that the usage of investigated waste materials as building blocks for building materials is safe for the environment.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100368"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685859","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}