Waste Management Bulletin最新文献

{"title":"A novel circular agriculture model with low cost, easy operation, and rapid scalability in rural areas","authors":"Huiyong Yu ,&nbsp;Di Huang ,&nbsp;Guoming Shen ,&nbsp;Beitao Xie","doi":"10.1016/j.wmb.2024.12.013","DOIUrl":"10.1016/j.wmb.2024.12.013","url":null,"abstract":"<div><div>Plant Jiaosu, referred to as “enzyme” over the past decades, constitutes the fermentation liquid derived from organic plant matter through fermentation. Circular agriculture is a type of agricultural production mode characterized by efficient resource utilization and environmental friendliness. This paper introduces a novel, low-cost, and easy-to-operate circular agriculture model, known as the “fruit and vegetable waste–agricultural Jiaosu–compost–crop”. The results showed that the addition of agricultural Jiaosu during the composting process prolonged the thermophilic stage, promoted the humification degree of compost, and reduced nitrogen loss. As demonstrated in this study, using compost made from agricultural Jiaosu and organic wastes could replace the commercial organic fertilizer in traditional cultivation of grapes. This would promote the growth of grapes, improve yield, and enhance grape quality. This substitution directly and indirectly resulted in an increase of 1400 yuan per 666.7 m² of grape planting area. This circular agriculture model will ensure the rapid utilization of organic wastes in rural areas and improve the rural environment.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 163-167"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153720","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":"Workers’ perception of solid waste management in higher education institutions in the Amazon region of Brazil","authors":"Maria do Céu de Sena Moura ,&nbsp;Geórgia Patrícia da Silva Ferko ,&nbsp;Marcos Felipe Falcão Sobral ,&nbsp;Pedro Alves da Silva Filho","doi":"10.1016/j.wmb.2025.01.002","DOIUrl":"10.1016/j.wmb.2025.01.002","url":null,"abstract":"<div><div>Higher education institutions (HEIs) offer promising opportunities to develop strategies and actions for managing Solid Waste (SW). This study aimed to analyze the perceptions of employees working at HEIs in Boa Vista, Roraima, Brazil, on how their institutions manage SW. HEIs 1 and 2 (public) and HEI 3 (private) were evaluated. The study method was qualitative and quantitative. Face-to-face interviews were conducted using a questionnaire addressing five domains of Waste Management: I − Recycling program; II − Treatment of organic waste; III − Campaign to reduce the use of paper and plastic; IV − Treatment of inorganic waste; and V − Treatment of toxic waste. A multidimensional similarity analysis was carried out between the HEIs. HEI2 showed better overall performance when compared to the other HEIs (p = 0.012). In domain I, only HEI 2 has a selective waste collection program and disposes of waste properly (score = 150, p &lt; 0.001). None of the HEIs treat organic waste (domain II). In Domain III, only public HEIs dematerialize administrative procedures and processes. Only HEI2 and HEI3 maintained similar behavior on domain IV (score = 300). In domain V, all HEIs have outsourced companies specialized in waste collection. The multidimensional analysis showed a high similarity among the HEIs. In conclusion, the HEI 2 showed slightly better waste management practices according to the worker’s perception. However, all HEIs in Roraima still need to make progress in managing their SWs.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 153-162"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153719","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":"Non-Conventional fuels from thermocatalytic pyrolysis of waste tube rubber using SiO2 as catalyst","authors":"Riaz Muhammad ,&nbsp;Felizitas Schlederer ,&nbsp;Ali Riaz","doi":"10.1016/j.wmb.2025.01.001","DOIUrl":"10.1016/j.wmb.2025.01.001","url":null,"abstract":"<div><div>Large quantities of used<!--> <!-->rubber<!--> <!-->material, mostly from vehicle scrap tires and tube rubbers, are discarded every year, causing environmental problems of great concern and representing a tough challenge for waste management bodies around the world. Various ways to remediate the issues have been proposed and applied from time to time. Pyrolysis offers a promising solution to convert waste tires into potential fuels and chemicals. Thermo-catalytic pyrolysis is a well-established process that aims for material, energy or chemical product recovery. The demand and need for the use of materials like scrap tubes and rubbers for producing useful products is a valuable consideration for this kind of waste that in turn may minimize the dependency on natural resources. Inner tube rubber, which is mainly made of isobutylene-isoprene, poses a hazard to the environment. However, there is also an opportunity to turn this waste product into a valuable energy source. In the current study optimization of parameters such as temperature, time and catalyst weight for catalytic pyrolysis of isobutylene-isoprene rubber into liquid fuel in the presence of Silicon Dioxide (SiO₂) as catalyst is reported. A maximum rubber conversion into oils was obtained at optimized conditions of 350 °C temperature, 1.5 g of catalyst (SiO₂) for an hour heating time. The obtained pyrolyzed products were subjected to several physical and chemical tests. Reported results confirm the presence of 30 % of aliphatic hydrocarbons, 25 % polar hydrocarbons and 40 % aromatic hydrocarbons. The distillation data indicates that oil obtained is a mixture of aromatic and olefinic hydrocarbons as that of diesel and may be used as an alternative fuel.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 128-136"},"PeriodicalIF":0.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153728","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":"Tailoring sustainable materials: Investigating nanoclay effects on citric acid crosslinked waste coconut fiber reinforced modified vegetable oil composites","authors":"Jurita Baishya ,&nbsp;Tarun K. Maji","doi":"10.1016/j.wmb.2024.12.011","DOIUrl":"10.1016/j.wmb.2024.12.011","url":null,"abstract":"<div><div>Sustainability concerns are driving industries to focus on eco-friendly substitutes for polymers and plastics. Waste fibers and bio-based materials are increasingly becoming popular as renewable options. They help lower carbon footprints and reduce reliance on fossil fuels. These materials also tackle environmental problems and support resource conservation and waste reduction. The primary objective of this endeavor is to develop green composites from coconut fiber, an abundant and underutilized byproduct of the coconut industry. This study assesses the effect of incorporating nanoclay at varying weight percentages (1, 3, and 5 wt%) on the properties of Coconut Fiber (CF) reinforced composites. The composites are fabricated using a compression molding process, with Methacrylic Anhydride modified Epoxidized Linseed Soybean Oil (MAELSO) serving as the polymer matrix, and Citric Acid (CA), a naturally derived crosslinker obtained from citrus fruits, to enhance the bonding within the material. The interaction between MAELSO, CF, CA and nanoclay was determined by Fourier Transform Infrared (FTIR) spectroscopy. X-ray Diffraction (XRD) and Transmission Electron Microscopy techniques (TEM) were employed to investigate the delamination and dispersal of silicate layers. Evaluation of surface morphology was achieved by Scanning Electron Microscopy (SEM) technique. The nanoclay-filled composites exhibited better mechanical property, higher thermal stability and flame retardant property compared to the nanoclay-free composites. Among all the nanocomposites those loaded with 1 wt% of nanoclay, exhibited the least amount of water vapor absorption capacity, volumetric swelling, and highest chemical resistance. The significance of this study lies in that the resulting composites promote sustainability by utilizing waste, renewable resources and biodegradable materials. This approach minimizes environmental impact while maintaining performance. As an eco-friendly alternative, these composites provide a viable substitute for conventional, non-biodegradable synthetic materials, supporting both environmental conservation and advanced material performance. The developed green composites demonstrate potential for construction and household applications due to their improved mechanical strength, thermal stability, and flame retardancy. Their low water absorption and improved chemical resistance make them suitable for humid environments, supporting sustainable material innovation.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 137-152"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153718","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":"A sustainable approach to dairy wastewater treatment through electrocoagulation: From beverage cans to clean water","authors":"Nosa Idusuyi ,&nbsp;Marzouq Adeyemi Adebayo ,&nbsp;Chinenye Adaobi Igwegbe ,&nbsp;Orhadahwe Thomas Aghogho ,&nbsp;Anina James ,&nbsp;Rasaq Adebayo Kazeem","doi":"10.1016/j.wmb.2024.12.012","DOIUrl":"10.1016/j.wmb.2024.12.012","url":null,"abstract":"<div><div>Dairy industry wastewater, laden with high levels of biological oxygen demand (BOD), chemical oxygen demand (COD), and various pollutants, poses significant environmental concerns. This study introduces the innovative use of recycled aluminium cans as electrodes for electrocoagulation, presenting an eco-friendly and cost-effective approach to wastewater treatment that aligns with circular economy principles. This study explores the efficacy of electrocoagulation (EC) in treating dairy wastewater, focusing on the influence of treatment duration, voltage, and pH levels on BOD, COD, and turbidity reduction. Utilizing recycled aluminium electrodes derived from beverage cans, a Taguchi design of experiments with a 3-factor, 3-level orthogonal array was employed. Results from nine experiments reveal that higher voltages and alkaline pH levels notably enhanced COD and BOD removal efficiencies. For instance, high removal rates of 91.67 % for COD and 95.36 % for BOD were achieved at 20 V and pH 9 over a 15-minute treatment duration were obtained from experiments. Furthermore, optimal overall EC performance parameters were obtained using Taguchi and Multi-response optimization using TOPSIS. Analysis of turbidity removal efficiencies demonstrates the significant impact of voltage and treatment duration. The study provides valuable insights into optimizing electrocoagulation processes for efficient treatment of dairy wastewater, offering a sustainable solution for environmental preservation and resource recovery.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 96-106"},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153715","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":"A governance model for sustainable municipal solid waste management: Aligning the sector with Pakistan’s economic goals","authors":"Asif Iqbal ,&nbsp;Rafia Haider ,&nbsp;Abdullah Yasar ,&nbsp;Abdul-Sattar Nizami","doi":"10.1016/j.wmb.2024.12.010","DOIUrl":"10.1016/j.wmb.2024.12.010","url":null,"abstract":"<div><div>Pakistan’s economy is transitioning from crisis to stability, necessitating the alignment of public service sectors like Municipal Solid Waste (MSW) management with the country’s economic conditions. By leveraging discrete mathematics and logical frameworks, this study identifies the potential of the waste sector to reduce public expenditure and contribute to economic sustainability. The proposed Wasteism Hierarchy Approach (WHA) offers policy guidelines across waste hierarchy levels to aid decision-making for municipalities, waste management companies, and local governments. Key considerations include the interplay of waste collection modes, fleet management, infrastructure, and catchment areas. Additionally, a Multi-Criteria Decision-Making (MCDM) framework ranks and prioritizes feasible MSW treatment and disposal options. This research highlights the integration of the waste sector into the circular economy and its potential to address climate change, promote regenerative agriculture, and support local economic sustainability.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 107-127"},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153716","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":"Extending the TPB of residential waste sorting with situational factors using a data-driven approach: The case of Gothenburg, Sweden","authors":"Jonathan Cohen,&nbsp;Jorge Gil,&nbsp;Leonardo Rosado","doi":"10.1016/j.wmb.2024.12.007","DOIUrl":"10.1016/j.wmb.2024.12.007","url":null,"abstract":"<div><div>Waste separation at source is perceived as an effective Municipal Waste Management strategy, and the success depends on understanding the drivers of proper waste sorting behaviour. The Theory of Planned Behaviour (TPB) has been extensively applied to determining the importance of different psychological constructs in waste sorting behaviour. Despite evidence of its validity in specific contexts, in urban contexts, one requires an understanding of how the built environment affects waste sorting behaviour. Furthermore, this study introduces the use of Exploratory Factor Analysis as a data-driven approach to define various TPB constructs from a collection of items, including situational factors such as distance to waste bins or the condition of recycling facilities. It shows how this technique outperforms the typical top-down approach of starting from pre-defined items assigned to its constructs. This study surveyed residents of Gothenburg, Sweden, to capture empirical data on factors that affect the planned behaviour of waste separation. Structural Equation Modelling (SEM) is used to evaluate the extended TPB model and extract the drivers of waste sorting behaviour. Results from the study can extend the application of TPB to inform urban planners about the location and maintenance of waste management infrastructure.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 87-95"},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153714","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":"Municipal solid waste supply chain optimization for value-added product development under uncertainty","authors":"Muazzam Mukhtar ,&nbsp;Muhammad Rizwan ,&nbsp;Atta Ullah ,&nbsp;Ali Elkamel ,&nbsp;Salman Raza Naqvi ,&nbsp;Muhammad Zaman","doi":"10.1016/j.wmb.2024.12.009","DOIUrl":"10.1016/j.wmb.2024.12.009","url":null,"abstract":"<div><div>Optimizing municipal solid waste (MSW) management through the production of valuable products and energy conversion is crucial to mitigate environmental damage and promote economic sustainability. This study focuses on addressing the MSW supply chain problem by exploring the optimal location for the waste treatment. The supply chain network encompasses MSW transfer stations, treatment facilities, and markets with product demands. The methodological approach entails constructing a superstructure, gathering relevant data, and analyzing the results. Both deterministic MILP and two stage stochastic model are used in this study. A deterministic mixed-integer linear programming (MILP) model is employed to optimize the MSW supply chain problem, with the use of solver BARON. To account for uncertainties in supply–demand and transportation costs, a two-stage stochastic MILP model is developed. The deterministic equivalent approach is then employed to solve the stochastic model, resulting in an average solution across all scenarios. The decision variable pertaining to the selection of treatment technology locations is managed in the first stage. The second stage focuses on determining transportation and production-related decisions. Stochastic models can capture the inherent unpredictability of real-world systems by simulating a range of potential scenarios, helping to tackle uncertainty. To underscore the practical relevance of the mathematical programming formulation, a case study is presented and thoroughly analyzed.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 66-75"},"PeriodicalIF":0.0,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153717","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":"Cellulase production by Bacillus smithii QT03 using agro-industrial waste as carbon source","authors":"Analyse Villanueva Gaete ,&nbsp;Ana Paula Martinazzo ,&nbsp;Carlos Eduardo de Souza Teodoro","doi":"10.1016/j.wmb.2024.12.008","DOIUrl":"10.1016/j.wmb.2024.12.008","url":null,"abstract":"<div><div>Currently, within the concepts of Bioeconomy and Circular Economy, technologies for transforming agro-indutrial waste into high-value products are rapidly advancing and gaining attention. Among these, microbial enzymes like cellulase have become valuable due to their extensive industrial application and potential to reduce cultivation cost, especially by using agro-industrial residues as substrates. This study aimed to optimize the culture conditions of <em>Bacillus smithii</em> QT03 for cellulase production and to partially characterize the enzyme. Several parameters were evaluated, including different agro-industrial wastes as a carbon source, incubation temperature, pH, incubation time, agitation, inoculum size, nitrogen source, and cellulase thermal and pH stability. <em>B. smithii</em> QT03 produces cellulase in the presence of malt bagasse as a carbon source (2 %), meat extract as a nitrogen source (1.5 %), at an incubation time of 48 h at 35 °C, stirring at 200 rpm, and 2 % inoculum. The enzyme reached maximum activity after 30 min at pH 7 and maintained 70 % of its activity for 24 h at pH 6. It also reached maximum activity at 70 °C and maintained 100 % activity after incubation at 55 °C for 3 h, and 58 % at 60 °C for 24 h. These results suggest that cellulase production by <em>B. smithii</em> QT03 using malt bagasse presents a promising, sustainable alternative for industrial applications.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 48-57"},"PeriodicalIF":0.0,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153703","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":"Effect of oxidation reduction potential on methane emission from anaerobic septic systems","authors":"Areke Alexander Tiareti ,&nbsp;Megumi Matsumura ,&nbsp;Taira Hidaka ,&nbsp;Fumitake Nishimura ,&nbsp;Youhei Nomura ,&nbsp;Taku Fujiwara","doi":"10.1016/j.wmb.2024.12.003","DOIUrl":"10.1016/j.wmb.2024.12.003","url":null,"abstract":"<div><div>Septic systems are major on-site sanitation facilities used in many developing countries to treat domestic wastewater. Climate change concerns have prompted efforts to reduce greenhouse gas (GHG) emissions; nonetheless, septic systems contribute to emissions of GHGs, such as methane. The present study investigated modifications to improve the operating conditions of septic systems to minimize methane emissions by evaluating the oxidation reduction potential (ORP) as an operating parameter using laboratory-scale biodegradation experiments. To investigate the influence of ORP on methane emissions, dog food and potassium nitrate were used as representatives of blackwater and alternative electron acceptors to oxygen, respectively, under various biodegradation conditions. The experimental results suggest that methane emission is suppressed at a critical ORP level (−350 to −450 mV vs. Ag/AgCl). They also showed that ORP can be used as a monitoring signal to better understand methane-producing conditions in septic systems. The proposed modifications to improve septic system operating conditions are to shorten the desludging period and provide sufficient oxygen to the septic tank, considering the critical ORP to prevent anaerobic conditions.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 58-65"},"PeriodicalIF":0.0,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153704","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}