Cleaner Waste Systems最新文献

{"title":"Representing the cost reduction of concrete containing clay brick powder and waste tyre rubber from the performance reference","authors":"David Sinkhonde,&nbsp;Tajebe Bezabih,&nbsp;Derrick Mirindi","doi":"10.1016/j.clwas.2024.100194","DOIUrl":"10.1016/j.clwas.2024.100194","url":null,"abstract":"<div><div>Under the effects of waste materials, non-conventional concrete mixes usually exhibit reduced costs, because of the use of waste materials compared with conventional concrete materials. On the other hand, the criteria for reducing the concrete cost should simultaneously incorporate the concrete performance. However, balancing the cost and performance of concrete incorporating waste tyre rubber (WTR) and clay brick powder (CBP) is still unclear. This study establishes a simple yet representative correlation between concrete cost and performance to illustrate the applications of modified concrete mixes containing CBP and WTR for sustainable construction. The study uses experimental works of compressive, split tensile and flexural strengths to assess the performance of concrete containing CBP and WTR. This information is exploited to determine concrete mixes capable of reducing cost at considerable concrete performance. The results highlight that the contributions of CBP and WTR to reductions of concrete cost cannot be neglected, particularly when high contents of these waste materials are used. Considerable relationships between costs and mechanical properties are validated using several examples, including the coefficients of determination of more than 0.65. While the inclusion of WTR addresses the issue of cost reduction in concrete, it falls short in improving the performance of concrete. It is demonstrated that the 5P0T concrete mix (5 % CBP and 0 % WTR) offers reasonable concrete performance and plausible cost reduction for use in sustainable construction. Moreover, the results provide theoretical and technical support on the contents of CBP and WTR that can achieve cost-performance balance. Therefore, the correlations between the cost and performance of the concrete presented here can be crucial in generating new non-conventional concrete mixes for sustainable construction.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100194"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential use of crushed waste glass and glass powder in sustainable pervious concrete: A review","authors":"Navaratnarajah Sathiparan ,&nbsp;Daniel Niruban Subramaniam","doi":"10.1016/j.clwas.2024.100191","DOIUrl":"10.1016/j.clwas.2024.100191","url":null,"abstract":"<div><div>This review explores the innovative use of crushed waste glass and glass powder in sustainable pervious concrete, emphasizing their potential to enhance mechanical properties and environmental benefits. Pervious concrete, characterized by its high porosity and permeability, is crucial in stormwater management and reducing urban heat. However, its inherent low compressive strength necessitates the incorporation of supplementary materials. This study highlights the pozzolanic activity of glass powder, which improves strength and durability while reducing the overall cement content, thereby lowering the carbon footprint associated with concrete production. The review addresses the challenges of using high glass powder replacement levels, including potential compressive strength reductions and increased susceptibility to freeze-thaw cycles. Future research directions include optimizing mix designs and investigating hybrid approaches that combine glass powder with recycled aggregates. Ultimately, this review underscores the vital role of waste glass in promoting sustainable construction practices and contributing to the circular economy within the pervious concrete industry.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100191"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum regarding previously published articles","authors":"","doi":"10.1016/j.clwas.2024.100159","DOIUrl":"10.1016/j.clwas.2024.100159","url":null,"abstract":"","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100159"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Investigating waste recycling intentions of top management in Bangladesh's leather industry: A hybrid analytical framework” [Clean. Waste Syst. 8 (2024) 100140]","authors":"Md Shamimul Islam ,&nbsp;Najmul Hasan ,&nbsp;Mohammad Shahidul Islam ,&nbsp;Tania Akter ,&nbsp;Muhtasim Fuad Rafsun ,&nbsp;Mahmudul Hasan Fouji","doi":"10.1016/j.clwas.2024.100168","DOIUrl":"10.1016/j.clwas.2024.100168","url":null,"abstract":"","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100168"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Association Rule Mining approach to explore the dynamics in plastic recycling business","authors":"Abdullah Al Hasan ,&nbsp;Quazi Hamidul Bari ,&nbsp;Philipp Lorber ,&nbsp;Islam M. Rafizul ,&nbsp;Jobaer Ahmed Saju ,&nbsp;Eckhard Kraft","doi":"10.1016/j.clwas.2024.100186","DOIUrl":"10.1016/j.clwas.2024.100186","url":null,"abstract":"<div><div>Understanding plastic recycling practices is vital for policy intervention. Association Rule Mining (ARM) is a powerful tool for extracting insights from complex data, though it hasn't been used for plastic recycling analysis before. This study aimed to apply ARM to data from the questionnaire survey of Recycling Shop (RS) owners in Khulna City to identify patterns of recycling practices and recommend suitable policies. Key findings revealed that RS owners rely on local and external sources for plastic waste (Rules with support 0.061–0.242, confidence 0.667–0.8, lift &gt; 1), recommending stronger recycling supply chain policies. Significant links between sourcing and impurities (Rules with support 0.061–0.091, confidence 0.5–0.667, lift &gt; 1.2) suggest better quality control. Disposal methods of non-recyclables like burning (Rules with support 0.03–0.212, confidence 0.714–1, lift &gt; 1) suggest policies for non-recyclables. Using ARM in this study offers a novel approach to developing efficient, sustainable waste management strategies in Khulna City.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100186"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dirty, difficult and dangerous: Establishing a plastics waste upcycling system in Nepal","authors":"Curie Park ,&nbsp;Andy Hira ,&nbsp;Padmakshi Rana ,&nbsp;Henrique Pacini ,&nbsp;Stephen Evans","doi":"10.1016/j.clwas.2024.100190","DOIUrl":"10.1016/j.clwas.2024.100190","url":null,"abstract":"<div><div>In large parts of the global South, conventional methods of treating plastic waste including: recycling, banning of single use plastics, extended producer responsibility systems, and attempts to reuse plastic waste have largely failed to reduce increasing volumes of untreated waste in the face of limited policy resources and capacity. This article explores the potential for creating plastic upcycling markets that would be financially self-sustaining through using plastic waste to develop valuable new products. The methodology is to explore a case study, the Plastic to Ghar project in Nepal, which seeks to incubate new upcycling businesses, with a focus on rural areas that lack proper waste management. The project proves the viability of creating customizable useful products for secondary markets from plastic waste. The lessons center around the need to pay attention to developing sustainable business models and more robust policy support to complement technological solutions.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100190"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on polymer-containing oily sludge as a potential fuel by combustion thermochemistry","authors":"Yuhao Cao ,&nbsp;Mulin Zou ,&nbsp;Aohan Ran ,&nbsp;Peiying Zong ,&nbsp;Zhaowei He ,&nbsp;Xiang Gou","doi":"10.1016/j.clwas.2024.100182","DOIUrl":"10.1016/j.clwas.2024.100182","url":null,"abstract":"<div><div>The environmental and resource issues posed by oil sludge have sparked a renewed interest in cleaner and more efficient oil production. The investigation on the combustion process of polymer-containing oily sludge (POS) is expected to open up new markets for POS as an alternative fuel. TGA was used to examine the combustion behaviour, kinetics, and thermodynamics of POS, and X-ray fluorescence (XRF) was used to measure the chemical composition of POS ash to predict ash fouling and slagging. Based on the TG-DTG curves, the mass loss of POS in combustion studies was split into four major areas. The combined calculation method of model-free methods, Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS), was applied to determine the activation energies from stage 1 to stage 4, which were 47.89 kJ/mol, 66.09 kJ/mol, 190.55 kJ/mol, and 98.37 kJ/mol, respectively. A four-stage kinetic model (D4→D2→D3→R2) was established to describe the combustion process of POS. Compared to other conventional sludges, POS has a relatively low activation energy and is more susceptible to thermochemical transformations. The difference between the enthalpy change (Δ<span><math><mi>H</mi></math></span>) and activation energy (<span><math><mi>E</mi></math></span>) indicated that the reactions benefit the formation of the activated complex. Meanwhile, the change in entropy (Δ<span><math><mi>S</mi></math></span>) implied the thermodynamic disequilibrium in the 3rd stage of POS and completion of the thermal conversion at the end of the reaction. The change in Gibbs free energy (Δ<em>G</em>) increased in a stepwise manner and its lower average value reflected the greater reaction favourability of combustion for POS. The composition of POS ash was mainly metal oxides, with the slagging index, fouling index, and slagging viscosity index of 1.0, 9.1, and 32.0, respectively. POS ash has high fouling and slagging, with special attention in the combustion application.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100182"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The future of waste management in Ghana: Assessing the feasibility and scalability of smart waste solutions amidst key adoption challenges","authors":"Kwame Anokye ,&nbsp;Ohene Boansi Apea ,&nbsp;Abigail Okyere Darko ,&nbsp;Luther Adjei Kwabi","doi":"10.1016/j.clwas.2024.100183","DOIUrl":"10.1016/j.clwas.2024.100183","url":null,"abstract":"<div><div>This study explores the potential of smart waste management systems to transform waste disposal practices in Ghana, a nation grappling with significant waste management challenges. The research reveals a stark contrast between the limited infrastructure and traditional waste disposal methods prevalent in rural areas and the more developed, yet still imperfect, systems in urban centers. The study highlights the feasibility of integrating smart technologies—such as sensor-equipped bins, GPS tracking, and data analytics—into Ghana’s waste management landscape, despite the considerable economic, infrastructural, and social barriers. A key finding is the need for foundational improvements in waste infrastructure before advanced smart systems can be effectively introduced, particularly in rural areas. The study also throws more light on the importance of public-private partnerships and targeted public education campaigns to overcome these barriers and foster broader adoption of smart technologies. Along offering practical recommendations and drawing comparisons with similar efforts in other low-income countries, this research provides valuable insights for policymakers and stakeholders aiming to enhance waste management practices in Ghana. This study is novel in its focus on applying smart waste management solutions in the context of a developing country like Ghana. While much existing research centers on developed nations, this study uniquely addresses the intersection of socio-economic and technological factors specific to Ghana, offering a well-designed practicable and actionable approach to implementing advanced waste management technologies in a challenging environment.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100183"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and field test of Red mud-Fly Ash Geopolymer pile (RFP)","authors":"Nie Qingke ,&nbsp;Zhang Haiqing ,&nbsp;Yang Haipeng ,&nbsp;Jia Xiangxin ,&nbsp;Zhang Rihua","doi":"10.1016/j.clwas.2024.100184","DOIUrl":"10.1016/j.clwas.2024.100184","url":null,"abstract":"<div><div>Red mud is an industrial solid waste obtained from the extraction of alumina from bauxite. In order to study the resource utilization of red mud and improve its comprehensive utilization rate, based on the principle of geological polymers, red mud based geological polymers are prepared using raw materials such as red mud, fly ash, blast furnace slag powder, sand, stone, and alkaline solution as pile materials. Through lab experiments, the ratio of red mud and fly ash geopolymer mixtures that can be used for underwater injection and pumping has been obtained; Through on-site experiments, the complete construction process and the bearing characteristics of red mud-fly ash geopolymer piles (RFP) was studied. Environmental impact assessments were conducted by monitoring the changes in water quality around the RFP. The research results laid the foundation for the engineering application of RFP piles. It was found that: (1) At a liquid-solid ratio of 0.55, the geopolymer mixture of red mud: fly ash: sand: crushed stone: GGBS=(1:2:2:4.94:0.1) has good workability. The geopolymer with this mix ratio can meet the performance requirements of pumping and underwater perfusion, the slump can be controlled between 220 and 225 mm, and the strength after 28 days of room temperature curing is 13.9 MPa. (2) Developed a complete set of construction techniques for RFP, including drying, grinding and sieving of red mud, preparation of alkaline activator solution, sequence of material mixing, and related processes for pile drilling, placement of conduits, and conduit method grouting. (3) The load test results show that in a silty clay foundation, the ultimate vertical compressive bearing capacity of a single RFP with a pile length of 10.0 m and a pile diameter of 520 mm is 753 kN. When the pile spacing is 1.5 m, the bearing capacity of single-pile composite foundation is 240kPa. The Q-S curve and the stress distribution curve of the pile indicate that its load transfer characteristics are consistent with those of ordinary concrete piles. The results of the core sampling test on the pile body show that the core sample taken from the 10 m pile is relatively complete, the rate of core recovery reaches over 99 %,it shows that the pile body is intact. The compressive strength experiment shows that the strength of core samples at different depths is above 10 MPa,and up to 19.5 MPa. (4) The continuous water quality monitoring results for 5 months indicate that the implementation of RFP has not cause significant adverse effects on the quality of surrounding water bodies.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100184"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Public perceptions of waste-to-energy technology in developing countries: A case study of tamale, Ghana","authors":"Abdul-Wahab Tahiru ,&nbsp;Samuel Jerry Cobbina ,&nbsp;Wilhemina Asare","doi":"10.1016/j.clwas.2024.100192","DOIUrl":"10.1016/j.clwas.2024.100192","url":null,"abstract":"<div><div>While Waste-to-Energy (WtE) holds promise for addressing waste management challenges in Ghana, its social acceptance remains a hurdle. To understand the public's perspective, this research employed a questionnaire survey. With a remarkable response rate of 85.9 %, 460 questionnaires were distributed and 395 were returned, providing a robust dataset for analysis. This high participation level demonstrates the public's interest in the issue, setting the stage for a deeper exploration of their perceptions and concerns regarding WtE technology. The results show heightened environmental awareness and resource shortage concerns among residents. While acknowledging WtE benefits, a lack of technical understanding fuels anxieties about odor and health risks, manifesting as a \"Not-In-My-Backyard\" (NIMBY) syndrome. Age, education, and proximity to WtE plants influence awareness and acceptance, with higher levels observed in urban residents, older age groups, and those closer to existing WtE plants. While perceived environmental awareness and recognition of WtE doesn't directly impact attitudes, perceived risks and benefits, especially risks, significantly influence public attitude and acceptance of WtE. To promote WtE development, targeted education campaigns, standardized waste management, and robust environmental regulations are crucial. This study offers insights for navigating the complex interplay of awareness, risk perception, and acceptance for sustainable WtE implementation in Ghana.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"9 ","pages":"Article 100192"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}