Cleaner Waste Systems最新文献

{"title":"Global trends and strategic pathways for waste plastics depolymerization in the circular economy","authors":"Godlisten G. Kombe","doi":"10.1016/j.clwas.2025.100292","DOIUrl":"10.1016/j.clwas.2025.100292","url":null,"abstract":"<div><div>The global plastic waste crisis underscores the urgent need for sustainable recycling, with chemical depolymerisation emerging as a cornerstone of the circular economy. This study maps global research trends and strategic pathways for waste plastic depolymerisation, revealing exponential growth since 2016, dominated by China and the U.S., with Europe leading in citation impact. Research has focused on polyethylene terephthalate (PET) via glycolysis, hydrolysis, and enzymatic methods; however, it neglects polyolefins, which are dominant in waste streams, exposing a critical mismatch. Emerging hybrid technologies, such as microwave-assisted and enzymatic-catalytic approaches, show promise but struggle with scalability and cost. Sustainability is gaining attention; however, weak Life Cycle Assessment (LCA) and Techno-Economic Analysis (TEA) frameworks impede progress. Three main research domains have emerged, namely fundamental mechanisms, polymer-specific solutions, and sustainable innovation. Strategic directions include shifting the focus to polyolefins, integrating hybrid methods, and embedding LCA/TEA standards supported by policies such as polyolefin recycling subsidies and UN Treaty-backed collaborations. These insights offer researchers, funders, and policymakers a roadmap to align depolymerisation research with circular economy goals, advancing scalable and equitable solutions to the challenge of plastic waste.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100292"},"PeriodicalIF":0.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848203","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":"Circular economy in the Indian extractive industry: A preliminary analytical assessment of the major mining companies","authors":"Prajna Paramita Mishra ,&nbsp;Ch. Sravan ,&nbsp;Ruthvika Shivali","doi":"10.1016/j.clwas.2025.100287","DOIUrl":"10.1016/j.clwas.2025.100287","url":null,"abstract":"<div><div>The concept of circular economy (CE) has garnered considerable attention as an instrument to achieve environmental sustainability. The mining sector worldwide has sought to introduce it too, for making its operations environment friendly. India, which is endowed with a multitude of minerals, is also undergoing this course correction. Using conceptual content analysis, the paper attempts to analyse the extent to which mining companies in India are adopting the principles of CE in their operations, in terms of the presence of words associated with CE in their reports. The analysis is done for 13 selected mining companies based on the quantum of their mineral production, from 2018–19 to 2023–24. The paper draws out the various contexts under which the mining companies are considering the notion of CE. Overall, the mention of CE-oriented words in the reports is found to be more implicit than explicit, broadly associated with emissions, inputs, or waste. Input recycling, resource recovery and reuse, mine water treatment and water conservation, and emissions mitigation hold primacy as reasons for adopting CE. Recovery of utilised resources for reuse is seen to be an important area of consideration for the companies, which indicates that they recognise and are keen to address the resource scarcity problem. The obtained results are indicative of the progressive focus of the Indian extractive industry on the adoption of CE practices in its mining-related operations, aimed significantly towards ensuring environmental sustainability, with an additional emphasis on societal benefits.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100287"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844163","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 the structural and antibacterial properties of soybean hull fibers via alkali treatment and zinc oxide nanocoating","authors":"Arya Mahendra Sakti ,&nbsp;Djarot B. Darmadi ,&nbsp;Femiana Gapsari ,&nbsp;Teguh D. Widodo ,&nbsp;Andita Nataria Fitri Ganda","doi":"10.1016/j.clwas.2025.100289","DOIUrl":"10.1016/j.clwas.2025.100289","url":null,"abstract":"<div><div>The increasing demand for eco-friendly and antibacterial textiles necessitates the development of natural fibers with enhanced durability and functionality. However, soybean hull fibers, or soybean fibers, suffer from poor oxidative stability and susceptibility to bacterial contamination., largely due to their hydrophilic nature, limiting their potential in textile applications. In this study, an alkali treatment is applied to clean the fibers and make more cellulose visible, and then a dip-coating with ZnO nanoparticles is done to strengthen the fiber properties. The results indicate that ZnO coating significantly increased surface roughness (from 21.35 to 46.43 µm) and density (from 0.67 to 1.12 g/cm³), while also enhancing thermal stability. Additionally, the treated fibers were washed well to check how much ZnO stayed on them, and tests showed a significant drop in bacteria sticking to the fibers, proving that ZnO is effective in improving antibacterial properties. This research helps improve natural fiber-based textiles that are both eco-friendly and functional, providing a possible option for hygiene-sensitive uses and showing the wider potential of using agricultural waste fibers around the world.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100289"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855307","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":"Development and characterization of eco-friendly earth bricks stabilized with date palm waste fibers for sustainable construction","authors":"Youssef Khrissi ,&nbsp;Amine Tilioua","doi":"10.1016/j.clwas.2025.100283","DOIUrl":"10.1016/j.clwas.2025.100283","url":null,"abstract":"<div><div>Local ecological materials in construction represent a fundamental step toward creating living environments that combine environmental sustainability, energy efficiency, and occupant comfort. It is part of an organizational context that encourages the adoption of these methods and processes. This study aims to improve the use of locally available materials, particularly soil and agricultural residues, in the Errachidia region (southeastern Morocco). In particular, date palm waste fiber, a widely available agrarian by-product, was incorporated into the soil to develop six different types of stabilized earth bricks with fiber contents of 0 %, 1 %, 2 %, 3 %, 4 %, and 5 %. The aim was to evaluate their thermophysical, mechanical, and capillary water absorption properties. Thermal properties were determined using the highly insulated house method (PHYWE), a specific methodology for assessing thermal properties in a controlled, highly insulated environment. In addition, mechanical measurements were carried out to assess compressive and flexural strength. The results obtained showed that the addition of date palm waste fibers to brick based on soil improves the thermal resistance of the bricks. Flexural and compressive strength increased up to 3 % of fiber content, while a reduction was observed above this value. The 3 % fiber content is optimal for the stabilization of brick based on soil. Then, the increase of fiber content in bricks resulted in an increase in water absorption with a decrease in the density of the bricks. Physical and chemical characterization (XRD, FTIR, SEM, and EDX) of the soil and date palm waste fibers was carried out with geotechnical soil tests. The results obtained showed that the soil studied satisfies the minimum requirements for the production of bricks stabilized by fibers. These bricks can be considered an alternative to conventional bricks in ecological construction.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100283"},"PeriodicalIF":0.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833616","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":"Sawdust as a sustainable additive: Comparative insights into its role in concrete and brick applications","authors":"Esakki Priya ,&nbsp;P. Vasanthi ,&nbsp;B. Prabhu ,&nbsp;Priyanka Murugesan","doi":"10.1016/j.clwas.2025.100286","DOIUrl":"10.1016/j.clwas.2025.100286","url":null,"abstract":"<div><div>The construction sector significantly impacts the environment through extensive use of natural resources, mainly sand, highlighting the urgent need for sustainable practices to maintain ecological balance and mitigate ecosystem degradation. Researchers are increasingly exploring industrial by-products as alternatives to natural materials to protect the environment. Among these, sawdust, typically considered waste, has emerged as a potential resource for sustainable construction. Utilizing sawdust in concrete and bricks can reduce environmental challenges such as greenhouse gas emissions, resource depletion, energy consumption, and contamination while addressing waste disposal issues. Sawdust may be used as a partial substitute for aggregates or cement in concrete. Such utilization benefits from its lightweight properties, improved thermal insulation, and decreased carbon footprint. Despite the merits, however, a detailed appreciation of the real contribution of sawdust-based materials toward reduced natural resource consumption and their more extensive environmental impact remains underdeveloped. This review assesses the most recent studies on the production, properties, and performance of sawdust-based building materials, emphasizing their sustainability for construction purposes. The study is divided into two phases, and the previous findings are compared by identifying limitations, contradictions, and research gaps. It shows technical challenges that must be overcome to maximize sawdust use in eco-friendly building practices. Finally, this paper will attempt to lay down a foundation for sustainable construction by proving the viability of sawdust as a resource-efficient, environmentally friendly material.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100286"},"PeriodicalIF":0.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829866","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":"River erosion mitigation innovation: Field study of permeable groins made from used tires","authors":"Riki Chandra Wijaya,&nbsp;Umboro Lasminto","doi":"10.1016/j.clwas.2025.100279","DOIUrl":"10.1016/j.clwas.2025.100279","url":null,"abstract":"<div><div>River erosion can be accelerated by factors such as high current velocity, easily eroded soil types, and human activities. One of the mitigation methods used is permeable groins to reduce current velocity and control flow patterns. However, the use of conventional materials is often expensive and difficult to obtain. This study tested the effectiveness of permeable groins made from used tires in reducing river erosion. The study was conducted in one of the rivers in Jambi City that experienced severe erosion conditions. Permeable groins were installed on site, and measurements were taken for one month to evaluate current velocity, riverbed elevation, and sedimentation. Arduino was used in this study to measure time-series discharge during the study period. The results showed that the installation of groins from used tires was able to reduce the average current velocity by 35 % and facilitate sediment accumulation of up to 6.16 cm between the groin structures. However, local erosion occurred on the groin piles due to the acceleration of the flow through the gaps, which caused an increase in erosion depth of up to 9.95 cm in some areas. In addition to technical benefits, the use of used tires also helps reduce waste and construction costs, making it an economical and environmentally friendly alternative solution.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100279"},"PeriodicalIF":0.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844166","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 review on demineralization, activation, and potential applications of the solid fraction obtained from the pyrolyzed waste tires","authors":"Nurul Fatahah Asyqin Zainal ,&nbsp;Suhaila Idayu Abdul Halim","doi":"10.1016/j.clwas.2025.100285","DOIUrl":"10.1016/j.clwas.2025.100285","url":null,"abstract":"<div><div>The abundant disposal of waste tires which are usually abandoned in landfills and left untreated, has raised global concerns. In mitigating this major issue, pyrolysis is a promising thermochemical process that converts waste tires into three main products that could be further valorized to be applied in various applications. Raw recovered carbon black (rCB), the solid carbonaceous matrix, is one of the products obtained from the pyrolysis of waste tires. This raw rCB is further processed, milled and pelletized to produce rCB. rCB is seen as a potential material as an alternative substitute for virgin carbon black, vCB. However, the poor quality of rCB limits its utilization of rCB, which calls for the need for treatment and modification. Systematic analysis of demineralization and activation of rCB is urgently needed for economic and commercial feasibility. Thus, this review analyzed the effect of demineralization and activation on the properties of rCB. Parameters such as concentration, and the type of acid and base used during demineralization were examined. The comparison of different activating agents and other parameters, such as temperature and impregnation ratio during physical and chemical activation was discussed in detail. Based on the presented data, the optimal conditions (<em>i.e</em>., temperature, duration, and impregnation ratio) are important to avoid unnecessary production costs (<em>i.e</em>., excessive chemicals used, or energy wasted). This review also aims to provide a selection of suitable demineralization and activation methods for generating a multifunctional carbon material with the desired properties. Hence, the development of carbon-based materials derived from waste tires which can partially or completely replace vCB, offers economic viability, versatility, sustainability, and safeguarding towards the environment and human health.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100285"},"PeriodicalIF":0.0,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829867","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":"Gas hydrate technology: A sustainable approach for comprehensive processing of coal mine water and coal mine methane","authors":"Anatolii F. Bulat ,&nbsp;Mykhailo M. Pedchenko ,&nbsp;Dmytro O. Yelatontsev ,&nbsp;Anatolii P. Mukhachev ,&nbsp;Volodymyr H. Shevchenko","doi":"10.1016/j.clwas.2025.100267","DOIUrl":"10.1016/j.clwas.2025.100267","url":null,"abstract":"<div><div>For countries whose economies and industries are heavily dependent on the mining sector (e.g., the USA, PRC, Ukraine), the environmental issues associated with coal mining are particularly acute and pertinent. This study focuses on a sustainable approach for the integrated utilization of two of the most widespread types of coal mining waste: coal mine drainage and mine gas.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100267"},"PeriodicalIF":0.0,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823931","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":"Geospatial technologies and multi-criteria decision making based-urban solid waste disposal suitable site selection: The case of Assosa town, Ethiopia","authors":"Jira Asefa Zeleke ,&nbsp;Gizachew Kabite Wedajo","doi":"10.1016/j.clwas.2025.100284","DOIUrl":"10.1016/j.clwas.2025.100284","url":null,"abstract":"<div><div>Solid waste is a byproduct of human activity in urban areas. The generation of solid waste have been increasing in urban areas due to the increasing population and socio-economic development in the urban areas. As such, solid waste management is the most difficult task that many developing and developed countries are facing. Solid waste management using landfill techniques is always required for the sustainable management of solid waste. However, selecting suitable landfill site is challenging as it requires multiple factors from multiple sources. Moreover, a comprehensive approach that considered multiple environmental, social and economic factors and per capita solid waste generation rate is not well known. The objective of this study was to select an economically viable, environmentally sound, and socially acceptable solid waste disposal site for the Assosa municipality using the state-of-the-art-geospatial technologies and multi-criteria approach. The main dataset criteria used for this study include proximity from road, slope, elevation, proximity from surface water, proximity from airport, proximity from fault, geology formation, proximity from groundwater point, groundwater depth, proximity to settlement, soil types, proximity from environmental protected areas, land use/land cover, and wind direction. In addition, interview questioners, and field observations were also used as an auxiliary data source. All the factors were evaluated pertinent to their suitability for landfill sites and weights were assigned for each factor using analytical hierarchy process (AHP) and multi-criteria decision making was used to produce solid waste suitability map for the Assossa town. Accordingly, the result showed that about 9.5 km² (8 %) of the study areas was highly suitable, 18 km² (18 %) was moderately suitable, and 79.5 km² (74 %) of the study area was unsuitable for solid waste landfill. The study results further showed that suitable sites for solid waste dumping are located in the northwestern parts of the town. Generally, the study showed that an integrated geospatial technologies and multi-criteria approaches are efficient and effective for selecting suitable solid waste disposal sites that have minimum environmental risk and human health concerns.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100284"},"PeriodicalIF":0.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850139","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":"Determinants of adopting web-based systems for e-waste management and ensuring sustainable environment: Evidence from Bangladesh","authors":"Mohammad Jahangir Alam ,&nbsp;Chanchal Molla ,&nbsp;S.M. Misbauddin ,&nbsp;Mohammad Awal Hossen ,&nbsp;Uttam Golder","doi":"10.1016/j.clwas.2025.100282","DOIUrl":"10.1016/j.clwas.2025.100282","url":null,"abstract":"<div><div>This study identifies the role of web-based systems for e-waste management in ensuring a sustainable environment and explores the determinants of adopting web-based systems for sustainable e-waste management, highlighting their potential and uniqueness to reduce human involvement, costs, and processing time in Bangladesh. After thoroughly examining the literature, subject matter experts select and validate ten determinants. The causal links are then visualized through an integrated approach of \"partial least squares (PLS)\" and \"structural equation modeling (SEM).\" The study's conclusions point to automation, intelligent decision-making, and sustainable quality control as the three most crucial determinants determining the adoption of web-based systems for managing e-waste, thereby ensuring sustainability. Real-time information, safety management, and government support are other important determinants. Furthermore, the association between e-waste management system adoption and behavioral intention is significantly moderated by automation. The research output might assist waste management professionals in developing suitable plans for implementing web-based e-waste management and creating efficient, automated e-waste procedures, ensuring sustainability.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100282"},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807803","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}