Cleaner Waste Systems最新文献

{"title":"Understanding Millennials and Gen Z’s organic food buying intentions: A mediation and segmentation study","authors":"Peerzada Munaqib ,&nbsp;Mushtaq Ahmad Darzi ,&nbsp;Suhail Ahmad Bhat ,&nbsp;Sheikh Basharul Islam ,&nbsp;Nabila Mushtaq","doi":"10.1016/j.clwas.2025.100294","DOIUrl":"10.1016/j.clwas.2025.100294","url":null,"abstract":"<div><div>Addressing environmental crises requires a shift in consumer behaviour towards more ecologically friendly options. Practicing organic conduct may improve psychological health. However, the desire to purchase health-conscious and ecologically friendly foods is struggling to gain traction. The study investigates the determinants shaping Millennial and Gen Z consumers intention to purchase organic food and segment them into categories based on their consumption motivation. Data from 340 Indian consumers were gathered via a structured questionnaire using a purposive sampling technique. To analyze the conceptual model and validate the hypotheses, structured equation modelling was employed. Green attitude, subjective knowledge, health consciousness and environmental concern have significant positive influence on purchase intention. Moreover, the impact of environmental concern and health consciousness on purchase intention were significantly mediated by green attitude and subjective knowledge. This study is pioneering in examining the influence of health consciousness and environmental concern on subjective knowledge towards organic food and also in examining the mediating effect of subjective knowledge in the relationship between environmental concern, health consciousness and the purchase intention of Millennials and Gen Z consumers within the Indian milieu. Further, millennials and Gen Z consumers are segmented into preventive and therapeutic consumers.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100294"},"PeriodicalIF":0.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860267","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":"Predictive modelling of mechanical properties of concrete using machine learning with secondary treated waste water and fly ash","authors":"Rajiv K.N. ,&nbsp;Ramalinga Reddy Y. ,&nbsp;Shiva Kumar G ,&nbsp;Ramaraju HK (Professor)","doi":"10.1016/j.clwas.2025.100296","DOIUrl":"10.1016/j.clwas.2025.100296","url":null,"abstract":"<div><div>This study investigates the utilization of secondary treated wastewater and fly ash in concrete production, focusing on modelling mechanical properties using machine learning models. Sixteen concrete mixtures were prepared with tap water and three types of secondary treated wastewater, varying the fly ash proportions (0 %, 10 %, 20 %, and 30 %). Workability, compressive strength, split tensile strength, and flexural strength were assessed for each mixture. Five machine learning models Linear Regression, LASSO Regression, Decision Tree Regression, Random Forest Regression, and Multi-Layer Perceptron were used to predict concrete's mechanical properties. The results show that M30 grade concrete can be effectively produced using secondary treated wastewater and fly ash, presenting a promising strategy for more sustainable concrete production by reducing freshwater usage and incorporating fly ash as a supplementary cementitious material. Notably, the Random Forest Regressor demonstrated superior prediction accuracy for compressive strength, outperforming the other models and proving to be an invaluable tool for optimizing concrete mix designs. Its ability to reliably predict concrete strength properties ensures higher accuracy in mix design formulation, which is critical for achieving desired performance while minimizing material waste. From a sustainability perspective, using secondary treated wastewater in concrete production significantly reduces the demand for freshwater, conserving this precious resource. Incorporating fly ash, a byproduct of coal combustion, not only enhances concrete properties but also helps divert industrial waste from landfills, reducing environmental impact. The application of machine learning models, especially the Random Forest Regressor, allows for more precise and efficient mix designs, further contributing to the sustainability of concrete production. This approach offers substantial environmental benefits by reducing water usage, promoting recycling of industrial byproducts, and improving the overall efficiency of concrete manufacturing processes.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100296"},"PeriodicalIF":0.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873348","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":"Assessing the community knowledge on waste management practices, drinking water source systems, and the possible implications on public health systems","authors":"Joseph Omeiza Alao ,&nbsp;Oche Joseph Otorkpa ,&nbsp;Daniel A. Ayejoto ,&nbsp;Ahmed M. Saqr","doi":"10.1016/j.clwas.2025.100295","DOIUrl":"10.1016/j.clwas.2025.100295","url":null,"abstract":"<div><div>Assessing the waste management practices and drinking water source systems is essential for public health systems and the well-being of millions. However, inadequate integration of community knowledge into scientific research to effectively address environmental issues remains a great challenge. This study assessed the community knowledge on the prevalent waste management practices, drinking water source systems, and the potential associated health risks using a descriptive cross-sectional design utilizing diagnostic survey questionnaires (DSQs) and oral interviews (OIs) in villages, semi-urban, and urban areas. The study reveals that 92 % of villagers rely on potentially contaminated water sources, with 43 % drinking from open surface water and 49 % from hand-dug wells. Meanwhile, open defecation remains prevalent, with 52 % of villagers resorting to this practice. The situation worsens in urban areas, where 56 % of residents dispose of waste in open dumpsites/landfills, with no access to engineered landfills. Waste burning, a hazardous practice, is employed by 27 % of the population. The data show that 17 % of the population relies on surface water, 40 % on hand-dug wells, and 36 % on boreholes, with only 5.7 % accessing treated water. 56 % of waste is disposed of in open dumpsites/landfills, 27 % is burned, 9 % is indiscriminately dumped, and 7 % is dumped in water bodies. 18 % of the population defecates openly, 30 % use pit latrines, and 55 % rely on untreated water systems for defecation. This implies that combining community knowledge with scientific research to address environmental challenges is crucial. However, the attitude of the respondents towards waste management, drinking water sources and health risks accounts for a significant variation in respondents’ education. Effective implementation of waste management practices and provision of basic sewage infrastructural systems, coupled with adequate education, is required to protect drinking water sources, prevent pandemic diseases, and safeguard the national economy and health.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100295"},"PeriodicalIF":0.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855191","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":"Optimization of biogas production with rice straw-derived biochar: Characterization, hormetic effects, and kinetics modelling","authors":"Utibe A. Ofon ,&nbsp;Uduak U. Ndubuisi-Nnaji ,&nbsp;Godwin E. Udofia ,&nbsp;Anthony A. Adegoke ,&nbsp;E.E. Orji ,&nbsp;Mboutidem I. Ekaette ,&nbsp;Charity A. Ukot ,&nbsp;Nnanake-Abasi O. Offiong ,&nbsp;Dele P. Fapojuwo ,&nbsp;Solomon E. Shaibu","doi":"10.1016/j.clwas.2025.100288","DOIUrl":"10.1016/j.clwas.2025.100288","url":null,"abstract":"<div><div>One of the drawbacks of anaerobic digestion (AD) is the slow process startup. This study evaluated rice straw-derived biochar (RSB) to accelerate the anaerobic co-digestion of paper waste (PW) and chicken manure (CM). Rice straw pyrolyzed at 550°C (RSB550) was characterized by SEM, EDX, BET, FTIR, CEC, and CHN analyses before supplementation. Different doses (0, 2, 4, 6, and 10 % w/v) were tested in a batch system co-digesting PW and CM (2:1) under thermophilic conditions (45°C) for 44 days. RSB550 exhibited a surface area of 23.5 m²g⁻¹ , a pore volume of 0.1 cm³g⁻¹ , a pore size of 15.4 nm, and a CEC of 2.0 meq/100 g, favorable for AD. Biogas yield was dose-dependent and significant via ANOVA, with 2 % RSB550 increasing production by 31.74 % compared to the control. Excess biochar reduced yield. Modified Gompertz modeling fit well (R²: 0.995–0.999), confirming biochar as a promising strategy for enhancing AD efficiency.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100288"},"PeriodicalIF":0.0,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855196","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 resource sustainability: The question of demolition or conversion of old cattle sheds","authors":"Bosompem Ahunoabobirim Agya ,&nbsp;Portia Agyemang ,&nbsp;Kwame Anokye","doi":"10.1016/j.clwas.2025.100291","DOIUrl":"10.1016/j.clwas.2025.100291","url":null,"abstract":"<div><div>This study critically evaluates the sustainability of demolishing versus converting aging cattle sheds by synthesizing evidence from 23 peer-reviewed articles published between 2010 and 2025. Employing a rapid review methodology combined with life cycle assessment, circular economy principles, and the triple bottom line framework, the research compares the environmental, economic, and socio-cultural impacts of each approach. Findings reveal that adaptive reuse substantially lowers greenhouse gas emissions, waste generation, and energy consumption while preserving cultural heritage and delivering long-term economic benefits despite higher initial investments. The study highlights the need for targeted policy incentives and robust assessment methods to guide sustainable rural infrastructure management.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100291"},"PeriodicalIF":0.0,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850138","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":"Future prospects towards attaining zero-emission of greenhouse gases from crude oil refinery plants","authors":"Lekan Taofeek Popoola ,&nbsp;Celestine Chidi Nwogbu ,&nbsp;Usman Taura ,&nbsp;Yuli Panca Asmara ,&nbsp;Lois Onyejere Nwobodo ,&nbsp;Alfred Ogbodo Agbo","doi":"10.1016/j.clwas.2025.100290","DOIUrl":"10.1016/j.clwas.2025.100290","url":null,"abstract":"<div><div>The contribution of greenhouse gas emissions from crude oil refineries to the global climate change has been so problematic. The end results of this has been linked to global warming causing adverse effects on public health and making the environment unsafe for living. This review article examines the challenges and effects emanating from the release of greenhouse gases from crude oil refining operations. In-depth discussions and salient points, shedding light for prospective researchers on the critical areas that should be investigated and improved on to attain net-zero emissions in refinery, were presented. The effects of the increase in the global number of refineries on GHG emissions trend in top countries are discussed. Top 10 countries and refinery industries with the highest GHG emissions were referenced as case studies. Between 2000 and 2021, the cumulative GHG emissions from refineries attained 34.1 Gt due to increase in the number of refineries while the top 10 enterprises accounted for approximately 33.8–38.1 %. Accumulative reduction of 532 Mt and 928 Mt of CO₂ emissions are expected between 2020 and 2030 if the efficiencies of refineries in the top 10 countries and global refineries are respectively improved. Technologies such as hydrogen-based refining and carbon capture, utilization, and storage (CCUS); integration of circular economy principles; green financing and government-backed incentives; and government-based policies are some of the steps that can be taken to make reduction of GHG emissions from refineries a reality. In conclusion, the stated vital points regarding future prospects towards attaining net-zero emissions from crude oil refinery plants will be beneficial for prospective researchers and the entire globe.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"11 ","pages":"Article 100290"},"PeriodicalIF":0.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844165","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":"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}