Cleaner Waste Systems最新文献

{"title":"Characterizing medication waste from a palliative care unit in Denmark – A descriptive study","authors":"Maja Schlünsen ,&nbsp;Mathias Dam Mønster Sørensen ,&nbsp;Rasmus Hald Pihlsbech ,&nbsp;Trine Graabæk ,&nbsp;Aileen Lind ,&nbsp;Thomas Storkholm ,&nbsp;Thomas Øhlenschlæger ,&nbsp;Sidsel Arnspang Pedersen ,&nbsp;Lene Juel Kjeldsen","doi":"10.1016/j.clwas.2025.100403","DOIUrl":"10.1016/j.clwas.2025.100403","url":null,"abstract":"<div><div>Production, transport, use, and disposal of medication is associated with high levels of CO₂ emissions, which negatively affects environmental sustainability. Reduction of the carbon footprint can be addressed by various strategies including focus on sustainability in the procurement and supply chains of medication, substitution or reduction of medication use, and reduction in medication disposal. To reduce medication waste, insights into the types of medications and volumes disposed are required. A significant research gap regarding the prevalence, management, and implications of medication waste remains within the hospice setting. This study aimed to categorize the medication waste and calculate the corresponding carbon emissions from a hospice in Denmark. All disposed medication from March to May 2024 from HospiceSønderjylland was collected, totaling 638 items, which amounts to 42.1 kg. This corresponds to an estimated annual medication waste rate of 168 kg assuming constant disposal over the year. Of the manually counted items, 31 % were found in unopened packages. The waste was predominantly composed of medication for pain relief. The cost of the medication waste was 56,923 DKK (US$8778) for a period of three months, which corresponds to 227,691 DKK (US$35,110) per year. The cost for disposal of the medication waste was 1013 DKK (US$156) for the 42.1 kg, corresponding to 4054 DKK (US$625) per year. The carbon footprint of the disposal of medication waste was estimated at 45.2 kg CO₂e, corresponding to 180.8 kg CO₂e per year. This study showed a substantial economic and environmental burden from disposal of medication from one hospice in Denmark. More research is needed on the proportions of unnecessary medication waste and ways to avoid it.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100403"},"PeriodicalIF":3.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A systematic review of waste management practices in the healthcare sector","authors":"Haneen Alrabiah,&nbsp;Vian Ahmed,&nbsp;Zied Bahroun","doi":"10.1016/j.clwas.2025.100400","DOIUrl":"10.1016/j.clwas.2025.100400","url":null,"abstract":"<div><div>The healthcare sector is a large, complex sector with many facilities, services, and personnel. The waste generated from the healthcare sector makes up a considerable amount of total solid waste generated in many countries, requiring rigorous regulations and policies to deal with it. This paper conducts a systematic review of the literature published in Healthcare Waste Management (HCWM), highlighting the apparent themes and trends observed in the literature, as well as gaps and possible future directions. The methodology used for this systematic review follows the PRISMA guidelines, including literature search, screening, bibliometric analysis, and content analysis. The dataset for this study comprises peer-reviewed papers on healthcare waste management published between 2019 and 2023, resulting in a total of 100 papers after screening and excluding irrelevant ones. The bibliometric analysis reveals that the most used keywords include healthcare practices, COVID-19 impact, and staff knowledge; indicating those may be highly researched themes. Additionally, the content analysis conducted validates the findings of the bibliometric analysis and reveals other trends gaining interest among researchers; those trends included sustainability, technological innovations, and circular economy. The gaps in literature are identified as well, including a lack of waste management policies for pharmaceutical waste and for waste generated from home patients. This paper adds to the body of art by reviewing the available literature using a systematic approach, ensuring relevant themes are highlighted and discussed to further advance research in the field of HCWM.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100400"},"PeriodicalIF":3.9,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144987986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of oil palm fiber waste into mesoporous silica for selective removal of heavy metals from industrial wastewater","authors":"Siti Salamah ,&nbsp;Totok Eka Suharto ,&nbsp;Ilham Mufandi ,&nbsp;Zian Prizki Utama ,&nbsp;Muhammad Hikmal Firdausya","doi":"10.1016/j.clwas.2025.100401","DOIUrl":"10.1016/j.clwas.2025.100401","url":null,"abstract":"<div><div>The increasing need for sustainable waste management and circular material use has encouraged research into converting agricultural residues into high-value functional materials. This study explores the valorization of oil palm fiber (OPF) waste for the production of mesoporous silica through sequential acid-alkali treatment and thermal calcination at 500 °C and 600 °C. The optimized silica synthesized at 600 °C exhibited a surface area of 138.3 m²/g and a pore diameter of 16.4 nm, indicating a mesoporous structure favorable for adsorption. Characterization using FTIR and XRF confirmed the presence of silanol and siloxane groups with low impurity levels. Adsorption performance was evaluated using industrial wastewater from silver processing, targeting copper (Cu²⁺) and silver (Ag⁺) removal. Results demonstrated high selectivity for Ag⁺, achieving 99.8 % removal, while Cu²⁺ showed limited uptake. SEM–EDX mapping confirmed the presence and distribution of metal ions on the silica surface. This study highlights the potential of OPF-derived silica as a low-cost, eco-friendly adsorbent, contributing to both waste valorization and heavy metal remediation within a cleaner production framework.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100401"},"PeriodicalIF":3.9,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931788","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":"Variation in physicochemical characteristics during co-composting of vegetable waste with animal manure using different composting techniques","authors":"Khumujam Omeshori Devi,&nbsp;Angom Sarjubala Devi,&nbsp;Anil Pratap Singh","doi":"10.1016/j.clwas.2025.100398","DOIUrl":"10.1016/j.clwas.2025.100398","url":null,"abstract":"<div><div>The organic component of municipal solid waste consists of mainly kitchen wastes with almost 50 % of the total solid waste generation. Composting of kitchen waste is a good strategy towards management of solid waste and sustainable agricultural production. The main objective of the present study was to determine the bests mixing ratio of garden soil, vegetable waste and three different types of animal manures- poultry, swine and cow manure. The study was carried out using three different methods- bin, pit and windrow composting to produce stable and mature composts. Thermophilic temperature in all the composting feedstock during composting was recorded to be almost equal to or greater than 55 °C indicating removal of pathogens and heavy metals. The average OC, TN and AP in the composts was maximum in bin composting, although there was a declining trend from the initial till final compost stage. The composts obtained from 1:3:1.5 ratio of soil: vegetable waste: manure, recorded average maximum germination percentage with 88.67 % in poultry manure mix, followed by 73.33 % in cow manure mix. However, in swine manure mix composts, the 1:2:1 ratio recorded maximum germination percentage among the three different ratios. In between the three types of composting methods the average germination percentage was maximum in bin composting with 74.81 % followed by pit composting with 69.63 % and minimum in windrow composting with 60 %. The effectiveness of the composting methods was bin&gt; pit &gt; windrow and performance of manure was poultry&gt; cow&gt; swine.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100398"},"PeriodicalIF":3.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimising waste management technologies through statistical entropy analysis: A quantitative approach to enhanced resource recovery","authors":"Ekaterina Korotenko ,&nbsp;Josef Jadrný ,&nbsp;Helmut Rechberger ,&nbsp;Michal Šyc","doi":"10.1016/j.clwas.2025.100399","DOIUrl":"10.1016/j.clwas.2025.100399","url":null,"abstract":"<div><div>The recovery of valuable materials from waste streams is essential to achieving global sustainability. Despite the variety of waste management technologies available, systematic and quantitative methods for evaluating and optimising their performance remain limited. This study addresses this gap by focusing on the optimisation of waste management technologies through the statistical entropy analysis (SEA).</div><div>For the case study, the FLUWA® (fly ash washing) technology for recovering Zn, Pb, and Cu from municipal solid waste incineration (MSWI) fly ash was chosen. Four technology configurations, varying in material intensity and metal recovery efficiency, were analysed. The assessment used a comprehensive dataset from long-term monitoring (2018–2022), complemented by laboratory and pilot-scale experiments. It included the chemical composition and properties of the technological streams. After statistical data treatment (removal of outliers, calculation of mean values and standard deviations), a material flow analysis (MFA) was performed. Subsequently, SEA was applied to quantify changes in statistical entropy (SE).</div><div>The results show that the basic configuration of FLUWA® increases SE (ΔH_METALS=+3.4 %), indicating dilution and loss of target metals. Optimisation of the extraction step led to substantial entropy reductions (ΔH_METALS =−16.3 % and ΔH_METALS=−23.8 % in two optimised cases), reflecting enhanced metal recovery and reduced dissipation. Additionally, coagulation and flocculation were found to have no effect on SE (ΔH_METALS=0), suggesting that these steps may be redundant from the perspective of metal recovery.</div><div>By identifying inefficiencies and opportunities for process enhancement, SEA supports the transition toward more effective waste management systems and promotes the circular economy.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100399"},"PeriodicalIF":3.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effectiveness of community-based eco-farm waste management training on enhancing farmers' environmental awareness: The role of government support and sustainability attitudes","authors":"Dwita Indrarosa ,&nbsp;Joko Mariyono ,&nbsp;Siswanto Imam Santoso ,&nbsp;Sutaryo Sutaryo","doi":"10.1016/j.clwas.2025.100394","DOIUrl":"10.1016/j.clwas.2025.100394","url":null,"abstract":"<div><div>Farmers' environmental awareness is pivotal in adopting sustainable agricultural practices, especially managing livestock waste. This study explores the effectiveness of community-based training models in enhancing farmers' environmental awareness in East Java, Indonesia, while considering the moderating roles of government support and attitudes toward sustainability. A quantitative experimental approach was employed, utilizing a pretest-posttest control group design with a sample of 160 farmers. The participants were divided into experimental and control groups, with the former receiving community-based eco-farm waste management training. Data were analyzed using Two-Way ANOVA to examine the impact of training, government support, and sustainability attitudes. The findings highlight that community-based training significantly improved environmental awareness compared to conventional training methods. Farmers who participated in community-based training and received high government support demonstrated the highest environmental awareness scores. Moreover, a positive attitude toward sustainability further amplified the training's effectiveness. This participatory approach fosters collaboration, experiential learning, and collective responsibility among farmers, making it superior to top-down training models. The study's novelty lies in integrating social, technological, and educational dimensions, which holistically address livestock waste management challenges. The training model offers practical and scalable solutions to promote sustainable farming practices by combining community-driven efforts with government incentives. However, the study is limited to rural areas in East Java, and future research should broaden its geographical scope and incorporate longitudinal analyses to assess long-term impacts. This research contributes to the theoretical understanding and practical application of participatory approaches in agricultural sustainability. It emphasizes the need for collaboration between communities and policymakers to foster environmental stewardship and improve waste management practices in farming communities.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100394"},"PeriodicalIF":3.9,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048816","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":"Effects of sulfur by-products on the durability and sustainability of asphalt pavement construction: A systematic review","authors":"Abdalrhman Milad ,&nbsp;Fahad Sultan Habib ,&nbsp;Mohd Rosli Mohd Hasan ,&nbsp;Abdualmtalab Abdualaziz Ali ,&nbsp;Nur Izzi Md Yusoff ,&nbsp;Ali Mohammed Babalghaith ,&nbsp;Tan Huy Tran","doi":"10.1016/j.clwas.2025.100396","DOIUrl":"10.1016/j.clwas.2025.100396","url":null,"abstract":"<div><div>There has been growing interest in utilizing sulfur by-products in asphalt binders and mixtures for pavement construction. Historically explored in the 1970s and shelved in the 1980s due to economic constraints, sulfur-based technologies are now being reconsidered considering current environmental and economic demands. This systematic review aims to assess the current research on incorporating sulfur into asphalt binders and mixtures and its effects on pavement performance, environmental sustainability, and economic feasibility. It conducts a detailed analysis of the existing literature and synthesizes the key findings on the engineering properties, long-term performance, environmental impacts, and safety considerations of sulfur-modified asphalt (SMA) or Sulfur-Extended Asphalt (SEA). The key findings revealed that incorporating sulfur enhanced the Marshall stability, stiffness, and ductility of asphalt mixtures while reducing flow and permanent deformation. However, concerns remain over sulfur’s environmental and health impacts, particularly hazardous gas emissions, underscoring the need for clear guidelines, deeper insight into chemical and mechanical interactions, optimized mixing procedures, and effective mitigation strategies. This review outlines these challenges alongside motivations and future directions to guide further research and development. The paper summaries the findings that highlight the potential use of sulfur by-products to modify asphalt binders and mixtures for robust and sustainable pavement road construction.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100396"},"PeriodicalIF":3.9,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893501","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 comparative study of the life cycle assessment of natural, recycled, and oil palm shell aggregate concretes","authors":"Sotya Astutiningsih ,&nbsp;Dasi Agung Ospaman ,&nbsp;Nuraziz Handika ,&nbsp;Dwica Wulandari","doi":"10.1016/j.clwas.2025.100397","DOIUrl":"10.1016/j.clwas.2025.100397","url":null,"abstract":"<div><div>This study explores the potential environmental impacts of replacing natural coarse aggregates with agricultural by-products and construction waste in concrete production. The research focuses on three types of concrete: oil palm shell aggregate concrete (OPSC), natural aggregate concrete (NAC), and recycled aggregate concrete (RAC). The potential environmental impact of the concrete was assessed based on its life cycle, including abiotic depletion (fuel), global warming potential, acidification, eutrophication, photochemical oxidation. In assessing these impacts, we considered the functional unit of 1 m³ and the compressive strength, CO₂ uptake over a 25-year service life of the concrete, and the allocation between natural and recycled aggregate concrete production. Preliminary findings indicate that recycled aggregate concrete is the lowest potential environmental impacts among the other concretes. The results show that RAC demonstrated the lowest environmental impact, with 8.6 % lower GWP, 10.2 % lower acidification, and 11.4 % lower abiotic depletion compared to NAC. While OPSC offered reductions in cement-related impacts but had higher transport-related emissions due to long distance transportation of raw materials.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100397"},"PeriodicalIF":3.9,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913565","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":"An alternative for cocoa pod husk delignification using hydrogen peroxide","authors":"Milady Ruiz-Nieves ,&nbsp;Erika Leonor Zambrano-Moreno ,&nbsp;Jhon Edinson Nieto Calvache ,&nbsp;Juan Camilo Solarte-Toro ,&nbsp;Leonardo A. Alonso-Gómez","doi":"10.1016/j.clwas.2025.100393","DOIUrl":"10.1016/j.clwas.2025.100393","url":null,"abstract":"<div><div>The cocoa pod husk (CPH) is a by-product that represents around 76 % of the fruit. The cellulose, lignin, and hemicellulose content of the CPH was analyzed, and then the response surface methodology was used to carry out a CPH delignification process with H₂O₂ at different concentrations, temperatures, and treatment times. The results showed that CPH was composed of 20.95 %, 7.9 %, and 20.4 % (dry basis) cellulose, hemicellulose, and lignin, respectively. The delignification treatment achieved a removal rate of 73 % for lignin, 30.3 % for hemicellulose, and 17.6 % for cellulose (values very close to the statistically estimated values). Analysis in the mid- and near-infrared region showed the characteristic signals of lignin, hemicellulose, and cellulose, allowing the reduction of their signals in the characteristic bands to be visualized. It is concluded that the H₂O₂ delignification method allows for high lignin removal comparable to that of traditional methods. Finally, the environmental impact analysis performed with the waste reduction algorithm found that increasing hydrogen peroxide concentration in CPH delignification significantly elevates atmospheric and toxicological environmental impacts; it is therefore suggested to optimize the use of this reagent.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100393"},"PeriodicalIF":3.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864653","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":"Experimentation of concrete properties of crumb rubber with SCMs: Mechanical, stiffness, NDT and micro-structural","authors":"Subham Mishra ,&nbsp;Eng Abdirizak Abdi Elmi ,&nbsp;Swetapadma Panda ,&nbsp;Pradip Sarkar","doi":"10.1016/j.clwas.2025.100395","DOIUrl":"10.1016/j.clwas.2025.100395","url":null,"abstract":"<div><div>The construction sector is grappling with an immense lack of natural sand that meets the requisite specifications for use in concrete. At the same time, the disposal of used rubber tires poses ecological, health, and aesthetic challenges due to the difficulty of recycling them. Utilizing industrial waste materials as alternative aggregates and binder components offers a promising solution that enhances environmental awareness, reduces adverse impacts, and promotes sustainable development in the construction industry. This study investigates the performance of M-40 grade concrete incorporating crumb rubber (CR) and binary blends of silica fume (SF) and rice husk ash (RHA). Crumb rubber, sourced from end-of-life tires, was used to replace 10 % and 20 % of natural sand by volume. Simultaneously, cement was partially replaced by binary combinations of SF and RHA in the range of 10–20 % and the fresh properties, mechanical strength, durability, and microstructural characteristics of the resulting crumb rubber concrete (CRC) are evaluated. Natural sand was replaced by CR alone (10–20 %), a reduction in compressive strength of up to 25.4 % was observed but however, this strength loss was significantly mitigated by incorporating binary blends of SF and RHA. Notably, the CRC mix containing 20 % CR, 20 % SF, and 10 % RHA demonstrated improved performance: a 37.5 % increase in compressive strength, a 25 % increase in split tensile strength, and a 42.5 % increase in flexural strength compared to the control mix. These enhancements are attributed to improved particle packing and the formation of additional hydration products from the blended pozzolanic materials, as confirmed by FESEM microstructural analysis. Moreover, this optimized CRC mix exhibited significantly higher static and dynamic moduli of elasticity—16.2 % and 65 % greater than the control mix, respectively—indicating increased stiffness. Non-destructive tests such as Ultrasonic Pulse Velocity (UPV), microhardness, and rebound hammer also showed markedly superior performance in the hardened CRC specimens.</div></div>","PeriodicalId":100256,"journal":{"name":"Cleaner Waste Systems","volume":"12 ","pages":"Article 100395"},"PeriodicalIF":3.9,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860906","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}