Cleaner Waste Systems最新文献

{"title":"Environmental impact and priority assessment of municipal solid waste management scenarios in Balikpapan City, Indonesia","authors":"Muhammad Ma’arij Harfadli ,&nbsp;Bimastyaji Surya Ramadan ,&nbsp;Mega Ulimaz ,&nbsp;Indriyani Rachman ,&nbsp;Toru Matsumoto","doi":"10.1016/j.clwas.2025.100223","DOIUrl":"10.1016/j.clwas.2025.100223","url":null,"abstract":"<div><div>This study was conducted to determine waste management strategies for the Balikpapan City government by predicting emissions from the existing waste management system and analyzing the reduction of greenhouse gas (GHG) emissions based on several waste management scenarios. This research was conducted in five stages: (1) defining the boundaries of the waste management system, (2) data collection and inventory, (3) analysis of solid waste generation and composition, (4) analysis of GHG emissions using the emission quantification tool (EQT), and (5) identifying criteria and scenario priority using the analytical hierarchy process (AHP). The scenario was developed into three possible scenarios, namely, scenario (A) which means to meet the target of regional policies and strategies, scenario (B) which means to meet the target of the Local Action Plan–Greenhouse Gas Emission Reduction by East Kalimantan and scenario, scenario (C) which means ideal scenario with 100 % waste collection that the waste collection ratio is 60 % collected by the informal waste sector and 40 % collected by the formal sector. The results showed that Scenario C results in a 156 % reduction in GHG emissions when compared to the BAU Scenario. Based on the AHP results, environmental, policymaking, and social are the prioritized criteria affecting waste management scenarios with values of 40, 16, and 15, respectively. Furthermore, the AHP results showed that scenario C, with a value of 52 %, is the most prioritized compared to scenarios A and B.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100223"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349321","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":"Efficient activation of bentonite clay for cyanide adsorption using sulfuric acid and sodium ion intercalation","authors":"Khairuddin Khairuddin ,&nbsp;Muhammad Akbar Ridhawansa ,&nbsp;Ruslan Ruslan ,&nbsp;Bambang Sardi","doi":"10.1016/j.clwas.2025.100225","DOIUrl":"10.1016/j.clwas.2025.100225","url":null,"abstract":"<div><div>This study aims to investigate the most effective way to activate bentonite clay using H₂SO₄ and Na⁺ intercalation. The outcomes were assessed using XRD, XRF, and FTIR analyses. The adsorption process was carried out in batches, and the cyanide adsorbate solution was analyzed using UV–VIS spectrophotometry and a ninhydrin reagent. The optimal concentration of H₂SO₄ was established at 1.5 M, whereas the ideal pH for cyanide was identified as 10.2. XRD analysis provided insights into the Miller indices (d_hkl) of mineral components, variations in crystallinity, shifts in 2Ɵ, and a decrease in basal spacing. The FTIR analysis showed vibrations associated with the hydroxyl group, methylenes, carbonate, water-related vibrations, silica-related groups, and metal-oxygen bonds. These findings confirmed the chemical structure and composition of the activated bentonite clay after treatment. XRF analysis revealed a decrease in the concentrations (wt%) of SiO₂, Fe₂O₃, CaO, TiO₂, and other impurities, as well as an increase in K₂O, compared to the pre-intercalation and pure states. During the post-cyanide adsorption phase, the -OH wavenumber shifted to the left, and the intensity of -CN decreased due to competition between CO₃^2- ions in the adsorbate and CN^- ion adsorbate, limited contact time, and suboptimal pH conditions. Under optimal pH conditions, the H-OH wavenumber shifted to the left, the -OH intensity decreased, and the -CN intensity increased for cyanide removal from water.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100225"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349320","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":"Environmental audit in dairy farms: A method to identify and prevent impacts on groundwater","authors":"Nicolás Eloy Cisneros Basualdo ,&nbsp;Roberto Esteban Miguel ,&nbsp;Roxana Banda Noriega ,&nbsp;Alejandro Ruiz de Galarreta ,&nbsp;Corina Iris Rodriguez","doi":"10.1016/j.clwas.2025.100220","DOIUrl":"10.1016/j.clwas.2025.100220","url":null,"abstract":"<div><div>Dairy farming is a key economic activity in Argentina. To achieve sustained growth, farmers adopted various strategies, leading to intensified milk production, but also to increased and accelerated environmental impacts. This study sought to analyze the environmental performance of water use and management in dairy farms in the 'Mar y Sierras' region of the province of Buenos Aires. A diagnostic environmental audit was implemented in five diverse case studies, which were chosen based on production size, location, and socio-productive dynamics. The study involved three stages: (1) a holistic environmental characterization of the farms, (2) farm visits, interviews and chemical analysis of groundwater and wastewater, and (3) proposing mitigation measures for each farm. Production stages vary across farms depending on their physical environment. The critical points identified included the interrelationship between groundwater management, wastewater treatment and disposal. Mitigation proposals tailored to the specific environment of each farm were suggested. Additionally, goals and objectives were established to ensure compliance with current environmental regulations. In conclusion, the environmental audit method enabled to determine the dynamics and operations of the farms, identify the most environmentally critical points based on each farm's natural and socio-economic context and assess their compliance with current environmental regulations.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100220"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377265","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":"Feasibility of using bagasse ash incorporating limestone calcined clay cement as ordinary Portland cement replacement for stabilisation of black cotton soils","authors":"Horris K. Nangulama ,&nbsp;Siya P. Rimoy","doi":"10.1016/j.clwas.2025.100226","DOIUrl":"10.1016/j.clwas.2025.100226","url":null,"abstract":"<div><div>In this study, a green and cost-effective cement system was developed with bagasse ash (BA incorporating limestone calcined clay cement (LC³) as ordinary Portland cement (OPC) replacement from black cotton soil (BCS) stabilisation perspective. Effect of BA incorporating 20 % – 60 % range of LC³ on standard consistency (SC), setting time (ST) and compressive strength properties was investigated and optimised through comparison studies with similar properties to BA incorporating 20 % – 60 % range of OPC. Optimum content of BA incorporating LC³ was added to BCS in different mix proportion range of 0–18 %. Effect of addition of different content of BA incorporating LC³ on performance of BCS specimens was examined in terms of compaction, free swell and durability properties. The results show that utilisation of BA incorporating LC³ maintains compressive strength and improves SC as well as ST of BA incorporating LC³ paste. Compared to BA incorporating OPC, BA incorporating 40 % of LC³ content at 0.50 water-cement (w/c) ratio obtained a good comprehensive strength equivalent cement performance. From the experimental results, it was found that addition of BA incorporating LC³ at optimal content significantly improved compaction, swell potential and durability properties of treated BCS. This study demonstrates technical feasibility of BA incorporating LC³ as a cement replacement. It verifies the reuse of by-products from agriculture for application as cementitious materials. The study further promotes the utilisation of BA incorporating LC³ for addressing climate change emergency and reducing high costs for routine BCS stabilisation practice.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100226"},"PeriodicalIF":0.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143295244","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":"Turning rice waste into opportunity: Circular economy approaches for food waste reduction","authors":"Husna Jamaludin ,&nbsp;Azhar Mohamad ,&nbsp;Hashim Suliman Elshreef Elmaky ,&nbsp;Sarina Sulaiman","doi":"10.1016/j.clwas.2025.100224","DOIUrl":"10.1016/j.clwas.2025.100224","url":null,"abstract":"<div><div>Food waste presents a significant challenge, highlighting the need for sustainable solutions within a circular economy framework. This study examines the potential of upcycling post-consumer rice waste into high-value rice crackers, analyses customer preferences, and assesses the costs and benefits of these products. In an experimental framework, a Face-Centered Central Composite Design was used to optimise and validate a three-phase process. Under optimal treatment conditions, the produced crackers are crisp and safe to consume. The consumer survey revealed a high level of acceptance and preference for the circular economy model. The cost-benefit analysis indicated economic viability, with higher net gains compared to conventional crackers. This study addresses gaps in rice waste management and illustrates the potential for utilising post-consumer waste to mitigate food waste, thereby contributing to the Sustainable Development Goals. Recommendations for policy and directions for future research are presented to improve food security and sustainability.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100224"},"PeriodicalIF":0.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349316","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":"Solid waste management practices in fast-food restaurants in Lagos megacity: An empirical analysis of customers’ perceptions","authors":"Nathaniel Oluwaseun Ogunseye ,&nbsp;Stephen Opeyemi Ogundare ,&nbsp;Umar Obafemi Salisu","doi":"10.1016/j.clwas.2025.100222","DOIUrl":"10.1016/j.clwas.2025.100222","url":null,"abstract":"<div><div>This study investigated customers' perceptions of solid waste management (SWM) practices in fast-food restaurants in Lagos megacity. Adopting a cross-sectional survey design, a multistage sampling technique was used to sample 170 customers of fast-food restaurants. Data collected were analysed using both descriptive and inferential statistics. The results showed that more males patronise fast-food restaurants but most customers were of the youth population. Most customers visit fast-food restaurants at least once a week, spend between <del>N</del>1000 and <del>N</del>5000 ($1.23 and $6.13) per visit, and prefer takeaway services. Plastic, food waste, and polythene are the most generated waste by fast-food restaurants, and their generation is primarily hinged on consumption inevitability. More than half of the customers never dispose of waste within fast-food restaurants, which suggests that the majority are engaged in takeaway services. The most evident SWM initiative adopted by fast-food restaurants is using signage to promote proper waste disposal. The Chi-square test revealed that patronage frequency does not significantly influence the waste disposal practice in fast-food restaurants (χ² =12.459, <em>p</em> = 0.0189). The regression analysis also revealed waste composition significantly impacts customers' engagement in SWM practices with three out of six predictors: food waste (B =0.508, <em>p</em> = 0.000), plastic (B =0.391, <em>p</em> = 0.008) and cans/tins (B =0.369, <em>p</em> = 0.004) exerting the most significant influence. The study concludes that customer engagement in developing SWM strategies and aligning the strategy to the existing SWM regulations in Lagos State is key to sustainable SWM practices in fast-food restaurants in Lagos megacity.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100222"},"PeriodicalIF":0.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143295243","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":"Forecasting municipal solid waste generation and composition using machine learning and GIS techniques: A case study of Cape Coast, Ghana","authors":"Theophilus Frimpong Adu ,&nbsp;Lena Dzifa Mensah ,&nbsp;Mizpah Ama Dziedzorm Rockson ,&nbsp;Francis Kemausuor","doi":"10.1016/j.clwas.2025.100218","DOIUrl":"10.1016/j.clwas.2025.100218","url":null,"abstract":"<div><div>As developing countries grow and urbanize quickly, the amount of waste they produce is increasing, leading to significant challenges for waste management. This study employs machine learning techniques to predict municipal solid waste (MSW) composition and generation rates in Cape Coast, Ghana, integrating socioeconomic and geospatial variables to support the development of effective waste-to-energy (WtE) adoption strategies. The research utilized correlation analysis and three machine learning models: Linear Regression, Random Forest, and Long Short-Term Memory networks. The correlation analysis revealed strong positive relationships between population, built area, and daily waste generation (Pearson's r &gt; 0.85), while temperature variables showed minimal correlation. Among the models evaluated, Random Forest demonstrated superior performance, achieving an R-squared score of 0.9915 and the lowest error metrics (MAE: 0.0422, MSE: 0.0077). Feature importance analysis identified population and built area as the most critical factors influencing waste generation, with importance scores of 0.508 and 0.483, respectively. These findings underscore the significant impact of urbanization on waste production and the need for integrated urban planning and waste management strategies. The results provide valuable insights for policymakers and urban planners, highlighting the necessity for waste management infrastructure to scale with urban growth. Nonetheless, the lack of gross domestic data (GDP) data limits the comprehensiveness of the analysis and may affect the forecasting accuracy. Future studies would benefit from exploring alternative economic indicators for a more comprehensive approach to waste management planning, especially in regions with scarce data. The study demonstrates the efficacy of machine learning approaches in predicting MSW dynamics, offering a robust tool for developing targeted WtE adoption strategies in rapidly urbanizing African contexts.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100218"},"PeriodicalIF":0.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143295246","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":"Invisible Green Guardians: A long-term study on informal waste pickers' contributions to recycling and the mitigation of greenhouse gas emissions","authors":"José Amorim Reis-Filho ,&nbsp;Jutta Gutberlet ,&nbsp;Tommaso Giarrizzo","doi":"10.1016/j.clwas.2025.100217","DOIUrl":"10.1016/j.clwas.2025.100217","url":null,"abstract":"<div><div>Recycling plays a crucial role in the circular economy by reintroducing materials into the supply chain. However, certain aspects of the recycling chain, such as the role of informal waste pickers remain underappreciated, despite their significant impact on energy savings and CO₂ recovery. This study investigates the contribution of informal waste pickers to the recovery of recyclable solid waste in Salvador, one of the largest cities in South America, over a 13-year period. Using data from pre-recycling centers that exclusively handle materials collected by waste pickers, we tracked the temporal impact of their activities in diverting solid waste from landfills. From 2010–2022, waste pickers recovered approximately 5700 tonnes of recyclable solid waste, preventing an estimated 27,100 tonnes of CO₂ emissions through material substitution and landfill diversion. The most recovered materials were PET, aluminum, and paper/cardboard, with a notable shift toward increased aluminum recovery. Aluminum and PET contributed most to avoided emissions, with aluminum surpassing PET in recent years. This study underscores the critical yet often undervalued role of informal waste pickers in municipal solid waste management (MSWM) and their contribution to greenhouse gas emission reductions. Given the global prevalence of waste pickers, particularly in low- and middle-income countries, further research on this topic could significantly enhance awareness of the benefits derived from their labor. Recognizing and integrating informal waste pickers into formal waste management systems could strengthen sustainability initiatives in cities and enhance climate change mitigation strategies under dynamic needs of urban populations.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100217"},"PeriodicalIF":0.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163956","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":"Environmental benefits of nano-modified cement incorporating high slag content: A machine learning approach","authors":"Serhat Demirhan ,&nbsp;Necim Kaya ,&nbsp;Yılmaz Kaya ,&nbsp;Mem Çiftçi","doi":"10.1016/j.clwas.2025.100216","DOIUrl":"10.1016/j.clwas.2025.100216","url":null,"abstract":"<div><div>This research makes a significant contribution to the field of environmental management by elucidating the environmental advantages of producing nanomaterial-modified cement, specifically by incorporating ground granulated blast furnace slag (GGBFS) replaced by cement up to 81 %. To achieve this, a total of 58 distinct mixtures were meticulously formulated, with the inclusion of nanomaterials such as nano-calcite, nano-alumina, and nano-silica in small quantities to produce standard cement mortars. The compressive strength of the resulting specimens was tested at curing intervals of 2, 7, and 28 days. The data obtained from these tests were analyzed using the Group Method of Data Handling (GMDH) machine learning model. Additionally, the experimental results were further evaluated through other machine learning estimation models. This study provides eco-friendly strategies to enhance cost-effectiveness and time efficiency in the production of CEM III cement with a high slag content, offering significant benefits for both cement manufacturers and environmental sustainability.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100216"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163955","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":"Systematic review of pistachio shell waste: Environmental applications, sustainable approaches, and nanotechnology insights","authors":"Nastaran Marzban Panah Maklavani ,&nbsp;Mahdi Maskani ,&nbsp;Saeed karimi","doi":"10.1016/j.clwas.2025.100219","DOIUrl":"10.1016/j.clwas.2025.100219","url":null,"abstract":"<div><div>Agricultural waste, particularly pistachio shells, represents a significant environmental challenge while offering immense untapped economic potential. Iran, as one of the largest pistachio producers globally, generates vast amounts of pistachio shell waste annually, with much of it improperly discarded. This practice contributes to severe soil and water pollution, highlighting the urgent need for sustainable waste management strategies.This study systematically investigates the bioactive properties of pistachio shells, emphasizing key compounds such as polyphenols, flavonoids, and antioxidants known for their anti-inflammatory, antibacterial, and antioxidant effects. Utilizing a structured review of peer-reviewed literature, advanced extraction methods, including supercritical fluid extraction (SFE) and ultrasonic-assisted extraction (UAE), were evaluated for their efficiency in recovering high-purity bioactive compounds while minimizing environmental impact.The findings reveal the transformative potential of these compounds in developing eco-friendly and sustainable cosmetic and personal care products, offering a natural alternative to synthetic chemicals. Additionally, the integration of nanotechnology is explored, showcasing its ability to enhance the efficacy, bioavailability, and stability of pistachio shell-derived products. This dual focus on advanced technologies and sustainable practices underscores the compatibility of pistachio shell utilization with global circular economy principles.By reducing agricultural waste and transforming it into high-value resources, this research provides a roadmap for achieving both environmental conservation and economic growth. It offers practical insights for researchers, policymakers, and industry leaders, emphasizing the critical role of innovative technologies in promoting sustainable development.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"10 ","pages":"Article 100219"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163958","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}