{"title":"A method for evaluating and verifying biochemical methane potential test completion performed with landfilled municipal solid waste.","authors":"Tyler Jp Casavant, Kerry McPhedran, Ian R Fleming","doi":"10.1177/0734242X241227373","DOIUrl":"10.1177/0734242X241227373","url":null,"abstract":"<p><p>The biochemical methane potential (BMP) test is significant for the landfill industry as it provides a means to evaluate the gas potential, and therefore potential degradability, of both incoming and in-place municipal solid waste (MSW). However, the BMP test is not standardized making comparison of BMP results across sites problematic. For example, the BMP test duration has historically ranged from 20 days to several months with most current BMP tests lasting 60 days. However, the gas generation data can potentially be modelled for any of those durations to produce a prediction of the ultimate BMP value (BMP<sub>ULT</sub>). Currently, the predicted BMP<sub>ULT</sub> values of 23 long-duration (115-150 days) BMP tests were used to determine the required quantity of data (i.e. number of days) needed to produce an accurate BMP<sub>ULT</sub> prediction. Results showed that no single test duration produced both accurate and efficient results, so a novel performance-based endpoint was proposed. The relative change in predicted BMP<sub>ULT</sub> values with respect to time (dBMP<sub>ULT</sub>/d<i>t</i>) was chosen as a potential performance-based completion metric. Results indicate that once the absolute normalized dBMP<sub>ULT</sub>/d<i>t</i> value is within <2.5, <1.5 and <0.6% day<sup>-1</sup> that the predicted BMP<sub>ULT</sub> is within 20, 10 and 5% of the true BMP<sub>ULT</sub>, respectively. Overall, the use of performance-based metrics for determining BMP test completion will allow for the collection of partial data sets, reduced experimental times and verification of results.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"112-120"},"PeriodicalIF":3.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11689784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139651788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haniyeh Jalalipour, Azadeh Binaee Haghighi, Navarro Ferronato, Sara Bottausci, Alessandra Bonoli, Michael Nelles
{"title":"Social, economic and environmental benefits of organic waste home composting in Iran.","authors":"Haniyeh Jalalipour, Azadeh Binaee Haghighi, Navarro Ferronato, Sara Bottausci, Alessandra Bonoli, Michael Nelles","doi":"10.1177/0734242X241227377","DOIUrl":"10.1177/0734242X241227377","url":null,"abstract":"<p><p>Organic waste management is challenging in low-middle income countries. Environmental impacts and high management costs affect the sustainable development of cities, an issue that is exacerbated by the lack of social involvement. The research conducted in Iran aims to assess the benefits of organic waste home composting in Shiraz to improve solid waste management (SWM) sustainability. The introduction of a pilot project to assess home composting systems was described, together with an economic, social and environmental analysis. The current SWM system (S0) has been compared with the new strategy proposed (S1), where home composting is considered to be introduced to collect about 10% of the municipal solid waste generated in a 10-year horizon. An economic balance related to the capital costs and operational costs of both systems was introduced, in parallel with a life cycle assessment (LCA) of the SWM system, and a questionnaire survey of the local population. Results showed that S1 leads to around 5% economic savings for the municipality due to the avoidance of organic waste transportation and disposal. Environmental benefits include a lowering of CO<sub>2</sub>-Eq emissions of about 19,076 tonnes year<sup>-1</sup>. In addition, about 28% of the interviewed (<i>n</i> = 319) agreed to employ the home composting system at home (CI 5.5%, 95% of confidence level) supporting the theory that about 10% of the organic waste can be segregated and home-composted. The research underlines that home composting can contribute to improve the sustainability of SWM systems in developing countries.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"97-111"},"PeriodicalIF":3.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11690229/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139708058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elena Passalacqua, Elena Collina, Andres Fullana, Valeria Mezzanotte
{"title":"Mini-review: Nanoparticles for enhanced biogas upgrading.","authors":"Elena Passalacqua, Elena Collina, Andres Fullana, Valeria Mezzanotte","doi":"10.1177/0734242X241231397","DOIUrl":"10.1177/0734242X241231397","url":null,"abstract":"<p><p>This mini-review is intended to explore the innovative applications of nanoparticles (NPs) in biogas upgrading, emphasizing their capacity to enhance biogas quality. Numerous studies underscore how NPs, when applied during anaerobic digestion, can boost not only the quantity but also the quality of the produced biogas, leading to reduce significantly the concentration of hydrogen sulphide or even to remove it completely. Moreover, NPs are proving to be excellent alternatives as adsorbent materials, achieving up to 400 mg<sub>H2S</sub> g<sup>-1</sup> NPs. In addition, new studies are exploring the application of NPs to increase the efficiency of biological treatments thanks to their unique features. This review also emphasizes the potential benefits and addresses the challenges that need to be overcome for these technologies to reach their full potential, ultimately contributing to the development of a sustainable and environmentally friendly energy landscape.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"16-25"},"PeriodicalIF":3.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139933078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tatjana Lasch, Karim Khodier, Christoph Feyerer, Markus Lehner, Renato Sarc
{"title":"Influence of material-material interactions and wear on coarse waste shredders.","authors":"Tatjana Lasch, Karim Khodier, Christoph Feyerer, Markus Lehner, Renato Sarc","doi":"10.1177/0734242X241306602","DOIUrl":"https://doi.org/10.1177/0734242X241306602","url":null,"abstract":"<p><p>This article uses model materials to introduce a controlled, location- and manufacturer-independent internationally accepted method for assessing shredding machines based on large-scale tests. Furthermore, a better understanding of the comminution behaviour of shredders with fixed settings (gap width, shaft speed, cutting tool geometry) is in the focus of the present investigation and assessed, using the statistical analyses for particle size distribution in certain screen sections. Conclusions have been drawn on the comminution behaviour in general and the material-material interactions of different fractions in the grinding chamber of the shredder by showing significant differences in the pure fraction's comminution behaviour against the mixture's comminution behaviour. In addition, the effect of the wear condition of the cutting tools on the particle size distribution has been investigated using statistical tests. As a result, interactions of the materials in the shredder grinding chamber can be demonstrated. The null hypothesis of the statistical test can be rejected due to the <i>p</i>-values, which are around 0.01 and therefore less than the predetermined alpha, which is 0.05, meaning that the shredding behaviour of pure fractions and those in a mixture is different. Additional investigations of waste wood only have shown that the wear condition of the cutting tools does not exhibit any effect on the particle size distribution of waste wood, as seen in the <i>p</i>-value (0.29), which is higher than the used alpha value. This could mean that the cutting tools need to be changed less frequently, which could have a positive effect on plant operation.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"734242X241306602"},"PeriodicalIF":3.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142898583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of regulatory policy instruments on plastic waste generation in India: A system dynamics approach.","authors":"Nishith Jardosh, Vinish Kathuria","doi":"10.1177/0734242X241304342","DOIUrl":"https://doi.org/10.1177/0734242X241304342","url":null,"abstract":"<p><p>Monitoring plastic consumption in emerging economies such as India is crucial because in these countries more than half of the consumption gets converted into waste within a year. In 2022, the Government of India enforced the Plastic Waste Management Rules to manage plastic waste. This article aims to find the potential impact of these rules on plastic waste generation from now until 2050. The simulation is carried out in two steps. In step one, a material flow analysis is conducted that maps plastic flow from production to its end-of-life. Through this it is estimated that at an optimistic level, off the 20 million metric tonnes (Mt) of plastic consumed, around 10 Mt is added to stock, 4.5 Mt is recycled, 2.5 Mt is reutilized and the balance 3 Mt is mismanaged. In step two, through system dynamics model, the impact of policy instruments is estimated on each stage of the flow of plastic assuming a phased implementation. Through this model, it is found that annually mismanaged plastic waste increases 11 to 28 Mt in 2050 in a business-as-usual scenario; however, implementing all the policies in a phased manner would stabilize waste generation from 2040 onwards.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"734242X241304342"},"PeriodicalIF":3.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142898582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Olena Hanoshenko, Mykola Halaktionov, Marion Huber-Humer
{"title":"Exploratory study on the impact of military actions on the environment and infrastructure in the current Ukraine war with a specific focus on waste management.","authors":"Olena Hanoshenko, Mykola Halaktionov, Marion Huber-Humer","doi":"10.1177/0734242X241305909","DOIUrl":"https://doi.org/10.1177/0734242X241305909","url":null,"abstract":"<p><p>The war in Ukraine and its consequences are becoming a disaster not only on a national scale but also for many other countries. The overview and considerations on such consequences given in this article shall help in managing and restoring (Ukrainian) territories after war. A structured analysis of literature about the war and post-war impact on the environment paired with 'grey literature' and the collection of currently available information from regional and national government agencies and official organizations on the specific situation in Ukraine, with a particular focus on waste management issues, was conducted. The main groups of environmental components affected by military actions are analysed, systematized, and classified. It is shown that the negative impact of military actions has irreversible consequences for the environment not only in Ukraine but is also already gaining global proportions. In addition, much of the infrastructure in the waste management sector has been destroyed, meaning that large volumes of unsorted and untreated waste are now ending up in landfills, most of which are uncontrolled since other more effective and sustainable environmental and waste management options are currently missing. Therefore, it is necessary to develop remediation concepts and implement comprehensive measures to clean up the territories and restore environmental components and the waste management sector after war. This includes - among other issues - assessing or measuring the generation and composition of post-war demolition waste and municipal solid waste during and after the war as a basis for further planning and decision-making.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"734242X241305909"},"PeriodicalIF":3.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Managing the e-waste crisis in Africa: A mini-review of policies, practices, technologies and business model innovations.","authors":"Meserecordias Wilfred Lema","doi":"10.1177/0734242X241304321","DOIUrl":"https://doi.org/10.1177/0734242X241304321","url":null,"abstract":"<p><p>This article aims to undertake a mini-review of the current state of electronic waste (e-waste) challenges on the African continent through a systematic analysis of existing national policies and legal frameworks, inventorying established management practices, and identification of innovative technological solutions. A literature review was conducted synthesizing evidence from over 80 peer-reviewed publications between 2010 and 2022. Content analysis of e-waste laws from 20 African countries supplemented the review of documented collection, recycling and export-related activities across the region alongside associated obstacles. Key findings indicate that while several African countries have enacted initial e-waste regulations, significant gaps persist around implementation and enforcement capabilities. Formal recycling remains minimal due to underdeveloped infrastructure, and the majority of e-scrap continues to be crudely processed informally resulting to health and environmental risks. Monitoring of transboundary trade and treatment standards also requires strengthening to curb the flow of undocumented shipments. Several technological start-ups and social enterprises are piloting novel approaches but require further testing and scale-up support. Based on these insights, the study recommends a harmonized policy framework and monitoring systems established through regional coordination. Recommendations also propose strategies to incentivize reducing consumption and promote eco-industrial parks for integrated recycling.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"734242X241304321"},"PeriodicalIF":3.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An application of solvent and thermal treatment to recover materials from photovoltaic module encapsulated with polyolefin elastomer.","authors":"Aistis Rapolas Zubas, Inna Pitak, Gintaras Denafas, Egidijus Griškonis, Jolita Kruopienė","doi":"10.1177/0734242X241305092","DOIUrl":"https://doi.org/10.1177/0734242X241305092","url":null,"abstract":"<p><p>High-quality recycling of photovoltaic (PV) modules starts with a delamination process. It aims to remove the encapsulation layer between glass and solar cells. Many studies have investigated the delamination of ethylene-vinyl acetate encapsulant, whereas the delamination of polyolefin elastomer (POE) encapsulation in solar modules remains a research gap. This study presents methods of solvent and thermal treatment for the separation of layers in a PV module encapsulated with POE polymer. Various organic compounds were tested for the solvent treatment. The results showed that most of the solvents did not separate the materials. However, with some of them, polymer swelling was achieved. Glycerol was the only solvent capable of separating glass from multi-material laminate. The separated glass does not include contaminants and is therefore suitable for the use as a secondary material. However, the solar cells remained encapsulated in the polymer, thus additional processing is needed to remove it. The time and solvent temperature for glycerol treatment were measured. The thermal treatment was conducted based on the results of thermogravimetric analyses, which determined the degradation of POE under heating conditions. Thermal treatment at 500°C for 1 hour in an air atmosphere was found to be the effective way to detach PV layers. Glass, solar cells and metal ribbons were separated without polymer contamination and are therefore suitable for further use.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"734242X241305092"},"PeriodicalIF":3.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment of type and quantities of food and beverage plastic packaging: A case study.","authors":"Goran Bošković, Nemanja Stanisavljević, Bojan Batinić, Srđan Kovačević, Nebojša Jovičić, Angelina Cvetanović","doi":"10.1177/0734242X241302450","DOIUrl":"https://doi.org/10.1177/0734242X241302450","url":null,"abstract":"<p><p>Plastic pollution has been identified as one of the most pressing environmental issues of the 21st century, driven by excessive consumption and inadequate plastic waste management. This issue is particularly reflected in short lifespan of plastic products, particularly plastic packaging within the food and beverage (F&B) industry. Urgent and relevant policy actions are needed to promote plastic circularity and improve waste management practices. Developing countries such as Montenegro face significant challenges in managing plastic waste flows due to legal, institutional and infrastructural gaps. This research addresses these challenges by employing material flow analysis (MFA) and advanced techniques like artificial neural networks to estimate the quantities and types of plastic packaging used in the F&B sector in Montenegro. The findings reveal that over 21,300 tonnes of F&B plastic packaging were placed on the market in Montenegro in 2018. Approximately 11% of this amount ends up directly littered in the environment or dumpsites, whereas the remaining 89% is predominantly collected and deposited in controlled landfills. Detailed MFA models were developed separately for the eight most common polymer types used in the F&B sector, along with specific models for plastic bags and polyethene terephthalate bottles to explore closed-loop recycling systems. It was found that only a small fraction of all analysed types of plastic packaging placed on the market can be effectively treated and recycled. This research contributes to the understanding of plastic waste management in Montenegro and facilitates the formulation of effective strategies to mitigate plastic pollution in the F&B industry.</p>","PeriodicalId":23671,"journal":{"name":"Waste Management & Research","volume":" ","pages":"734242X241302450"},"PeriodicalIF":3.7,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142795228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}