Waste management最新文献_第3页

Breakdown of plastic waste into microplastics during an industrial Composting: A case study from a biowaste facility 在工业堆肥过程中，塑料废物分解成微塑料：来自生物废物设施的案例研究

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-15 DOI: 10.1016/j.wasman.2025.114889

N. Risku , O. Dahl , H. Vanhanen , K. Pulkkinen , J.J. Litmanen , C. Rigaud , S.J. Taipale

{"title":"Breakdown of plastic waste into microplastics during an industrial Composting: A case study from a biowaste facility","authors":"N. Risku , O. Dahl , H. Vanhanen , K. Pulkkinen , J.J. Litmanen , C. Rigaud , S.J. Taipale","doi":"10.1016/j.wasman.2025.114889","DOIUrl":"10.1016/j.wasman.2025.114889","url":null,"abstract":"<div><div>Microplastic pollution is an increasing environmental concern, and further research into its sources is urgently needed. One potential pathway for microplastics to enter agricultural lands is the use of compost-based soil amendments or recycled organic fertilizer. While techniques exist to remove visible plastics from biowaste, microplastics present a hidden challenge. EU fertilizer regulations only account for particles ≥ 2 mm, excluding smaller ones. Research on plastics in biowaste management systems is limited. Our study investigated plastic fragmentation into microplastics and the role of microbial communities in plastic degradation. Samples were collected before sanitation, after tunnel composting, after outdoor maturation, and from a compost-based fertilizer, focusing on particles > 20 µm using Raman spectroscopy. Microbial community analysis was conducted using 16S rRNA sequencing and phospholipid fatty acid analysis. We observed a significant increase in microplastic particle counts and a decrease in size throughout composting. Mature compost contained an average of 944 ± 586 particles/g of dry weight (<0.25 mm), primarily polyethylene terephthalate, with plastics accounting for up to 0.25 % of dry weight. Only 7 ± 2 bigger plastic particles (>0.5 mm) were found from all samples. Subtle changes were observed in microbial communities during the composting process, predominantly among fungal communities, while Firmicutes remained the most abundant bacterial phylum in all samples. Our results suggest that plastics are fragmented into smaller particles during the industrial composting process and are not efficiently decomposed by microbes during the process.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114889"},"PeriodicalIF":7.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Impact of video information intervention on public perceptions of waste-to-energy incineration facilities: An information processing theory perspective 视频信息干预对垃圾焚烧设施公众认知的影响：信息处理理论视角

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-15 DOI: 10.1016/j.wasman.2025.114890

Jiabin Chen , Xianbao Ye , Menglei Jiang , Bo Xia , Martin Skitmore , Yong Liu

{"title":"Impact of video information intervention on public perceptions of waste-to-energy incineration facilities: An information processing theory perspective","authors":"Jiabin Chen , Xianbao Ye , Menglei Jiang , Bo Xia , Martin Skitmore , Yong Liu","doi":"10.1016/j.wasman.2025.114890","DOIUrl":"10.1016/j.wasman.2025.114890","url":null,"abstract":"<div><div>This innovative study investigates the novel realm of video information interventions and their transformative role in shaping public perceptions of waste-to-energy (WTE) incineration facilities. A behavioral survey experiment with 127 participants aims to uncover unique shifts in attitudes toward WTE incineration facilities, offering fresh insights into the impact of video information interventions on public perspectives.</div><div>The study reveals two distinctive outcomes. Firstly, it highlights the unprecedented influence of video information intervention in shaping public perceptions of WTE incineration facilities. This intervention emerges as a dynamic force adept at presenting a nuanced and balanced view that mitigates potential negative impacts and encourages a more comprehensive understanding of the technology. Secondly, a novel perspective is introduced on the relationship between public perception and acceptance, emphasizing the intervention’s innovative role in reshaping opinions.</div><div>The research, therefore, signifies a major change in the governance of potentially risky facilities. The empirical evidence highlights the novelty of video information interventions as crucial tools for effective risk communication and community engagement. By paving the way for positive public perceptions through innovative interventions, the study contributes to the sustainable development and acceptance of such facilities as WTE incineration, marking a significant advancement in societal and environmental goals.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114890"},"PeriodicalIF":7.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Mechanisms on nitrogen amendment stimulating methane oxidation in landfill cover soils 氮修正促进垃圾填埋场覆盖土壤甲烷氧化的机理

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-14 DOI: 10.1016/j.wasman.2025.114893

Xue Tong , Xin Zhang , Jun Fu , Ruo He

{"title":"Mechanisms on nitrogen amendment stimulating methane oxidation in landfill cover soils","authors":"Xue Tong , Xin Zhang , Jun Fu , Ruo He","doi":"10.1016/j.wasman.2025.114893","DOIUrl":"10.1016/j.wasman.2025.114893","url":null,"abstract":"<div><div>Landfill cover soil plays a pivotal role in mitigating CH<sub>4</sub> input to the atmosphere. However, the community and activity of methane-oxidizing bacteria (MOB), and their responses to nutrient amendment remain insufficiently understood in landfill cover soils. In this study, the influencing mechanisms of nitrogen amendment on MOB activity, and their functional microorganisms and genes were investigated in landfill cover soils. An exogenous ammonium and nitrate addition could enhance CH<sub>4</sub> oxidation activity of 13.9–34.1 times in the landfill cover soil. The NH<sub>4</sub><sup>+</sup>-N addition of 800 mg kg<sup>−1</sup> could cause a maximum nitrite accumulation of 41.2 mg kg<sup>−1</sup> in the landfill cover soils and inhibit CH<sub>4</sub> oxidation. Nitrogen was mainly deposited in the landfill cover soil in the form of organic nitrogen, with a slight loss of 1.47–3.21 % in the treatments amended with ammonium and nitrate at each stage. A high CH<sub>4</sub> oxidation could increase the secretion of CH<sub>4</sub>-derived carbon and improve the organic matter of soil. Compared with ammonium, the nitrate addition had a greater stimulating effect on microbial and MOB growth. Type I MOB predominated in the soils amended with ammonium and nitrate, whereas type II MOB dominated in the nitrogen-deficient soils. Metagenomic analysis showed that the genes related to nitrogen fixation (<em>nifDKH</em>) were more abundant in the nitrogen-deficient soil than the others. These findings suggest that an appropriate ammonium and nitrate addition could induce carbon and nitrogen accumulation, and stimulate microbial metabolism such as CH<sub>4</sub> oxidation and element cycles in the landfill cover soils to mitigate CH<sub>4</sub> emission.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114893"},"PeriodicalIF":7.1,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Air classification efficiency evaluation of landfilled municipal solid waste using experiments and a probabilistic method 用实验和概率法评价垃圾填埋空气分级效率

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-13 DOI: 10.1016/j.wasman.2025.114879

Lin Feng Yu , Yu Qi Jin , Miao Xin Yuan , Fei Zhang , Jie Hu , Ji Wu Lan , Yu Fan Wei , Yun Min Chen , Han Ke

{"title":"Air classification efficiency evaluation of landfilled municipal solid waste using experiments and a probabilistic method","authors":"Lin Feng Yu , Yu Qi Jin , Miao Xin Yuan , Fei Zhang , Jie Hu , Ji Wu Lan , Yu Fan Wei , Yun Min Chen , Han Ke","doi":"10.1016/j.wasman.2025.114879","DOIUrl":"10.1016/j.wasman.2025.114879","url":null,"abstract":"<div><div>The air classification efficiency of landfilled Municipal Solid Waste (MSW) is critical for resource recovery but remains challenged by the heterogeneity and non-spherical morphology of waste. In this study, a probabilistic framework that integrates spheroid modeling with the Monte Carlo procedure to predict and optimize the separation efficiency was developed, and the results were compared using orthogonal experiments. The morphological distributions (elongation, flatness, and size) of 381 landfill samples and the density distributions of 184 landfill samples were statistically characterized. For the numerical model, spheroidal particles were generated by randomly sampling from each parameter’s distribution. Then, a numerical model that incorporates non-spherical drag coefficients was developed. The model achieved a Root Mean Square Error (RMSE) of < 0.13 in predicting separation indicators, compared to the experimental results. The experimental results demonstrated that, under the same airflow velocity conditions, the recovery of light substances (<em>R<sub>L</sub></em>) in landfilled MSW was lower than that of fresh MSW, partially due to the increase in density resulting from the degradation of organic matter. The numerical model revealed that the separation efficiency (<em>E</em>) exhibited velocity-dependent unimodal trends. The model further identified the optimal performance of the effective separation interval for an airflow direction of 15° under 21.40 m/s (50 Hz), and the interval length was 21 % and 15 % longer compared to 0° and 30°, respectively, under equivalent velocities. The results of this work provide a reference for optimizing the air classification apparatus of landfilled MSW, and a basic method for use in more thorough simulation studies.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114879"},"PeriodicalIF":7.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Impact of gypsum waste on MSW and WTE ash for material recovery and syngas enhancement 石膏废弃物对城市生活垃圾和垃圾灰分的影响及其对材料回收和合成气增强的影响

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-13 DOI: 10.1016/j.wasman.2025.114859

Janhvi K. Trivedi , Tasnuva Moutushi , Kiran RG Burra , Ashwani K. Gupta , Marco J. Castaldi

{"title":"Impact of gypsum waste on MSW and WTE ash for material recovery and syngas enhancement","authors":"Janhvi K. Trivedi , Tasnuva Moutushi , Kiran RG Burra , Ashwani K. Gupta , Marco J. Castaldi","doi":"10.1016/j.wasman.2025.114859","DOIUrl":"10.1016/j.wasman.2025.114859","url":null,"abstract":"<div><div>Waste-to-energy (WTE) ash, traditionally viewed as a disposal challenge with landfill costs of approximately $70 tonnes<sup>−1</sup>, is emerging as a valuable feedstock for resource recovery. This study exploresthe potential of combining Municipal Solid Waste (MSW) ash with gypsum waste to enhance recovery of valuable elements from MSW ash, modifying the oxidation state of key elements through an appropriate thermal treatment. These objectives can be achieved by utilizing energy generated during thermal processing of MSW. The work focuses on the recovery of manganese (Mn), a representative critical element, but also aluminum (Al) and iron (Fe) are investigated. Adding gypsum waste increased Mn<sub>3</sub>O<sub>4</sub> levels approximately by 50 %, facilitating easier recovery of Mn via acid extraction thus enhancing the efficiency of the process.Furthermore, the possibility of adding gypsum waste to the gasification of MSW was investigated in a lab-scale reactor showing a 36 % increase in carbon dioxide (CO<sub>2</sub>) and 58 % in hydrogen (H<sub>2</sub>) yields at 900 °C in the produced syngas, indicating improved hydrogen conversion and energy efficiency. Increase in temperature also improved the impact of gypsum with 900 °C, providing increased syngas improvements over 800 °C. Thus, this approach, combining gypsum waste with MSW and their thermal treatment, presents a promising avenue for enhancing the environmental sustainability of WTE systems.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114859"},"PeriodicalIF":7.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Landfill depths alter microbial community structure and ecological assembly by affecting δ13C and organic matter 填埋深度通过影响δ13C和有机质改变微生物群落结构和生态组合

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-13 DOI: 10.1016/j.wasman.2025.114881

Yu-Xin Wang , Qing-Yu Liu , Jun-Yan Du , Hao-Qun Sha , Jing Su , Yue Sun , Jing-Ying Mao , Xiao-Song He

{"title":"Landfill depths alter microbial community structure and ecological assembly by affecting δ13C and organic matter","authors":"Yu-Xin Wang , Qing-Yu Liu , Jun-Yan Du , Hao-Qun Sha , Jing Su , Yue Sun , Jing-Ying Mao , Xiao-Song He","doi":"10.1016/j.wasman.2025.114881","DOIUrl":"10.1016/j.wasman.2025.114881","url":null,"abstract":"<div><div>Microorganisms are crucial for the degradation of organic matter during landfill. However, the processes of microbial community assembly and ecological niche in landfill are poorly understood. Here, the mechanisms underlying microbial assembly in landfill were investigated based on neutral theory, niche distribution and network analysis. The results showed that moisture and potassium in the landfilled wastes increased with depth, while organic matter and δ<sup>13</sup>C were significantly higher in the middle layer than in the surface and bottom layers (<em>P</em> < 0.05). The richness and diversity of bacteria were significantly greater in the surface layer compared to the middle and bottom layers (<em>P</em> < 0.05), with moisture content, organic matter, total nitrogen and δ<sup>15</sup>N significantly influencing bacterial community composition. Deterministic processes over stochastic processes were pronounced in the surface layer, with the latter accounting only for 3.8 %. As landfill depth increased, variations in organic matter composition led to a greater influence of stochastic processes (52.7 %), while deterministic processes accounted for only 5.8 %. The niche breadth of abundant taxa was narrower than conditionally rare or abundant taxa, with their distribution primarily regulated by waste δ<sup>13</sup>C (<em>P</em> < 0.05), indicating greater environmental sensitivity. The niche overlap of microbial communities was lower in the surface layer, with the proportion of groups with high niche overlap being 2.69 times and 1.69 times higher in the middle and bottom layers. This study provided the first analysis of microbial niche dynamics across landfill depths, revealing critical interactions between δ<sup>13</sup>C driven organic matter availability and stochastic assembly processes.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114881"},"PeriodicalIF":7.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Sustainable repurposing of grape marc: Potential for bio-based innovations 葡萄马克的可持续再利用：生物基创新的潜力

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114871

Luziana Hoxha , Mohammad J. Taherzadeh , Matteo Marangon

{"title":"Sustainable repurposing of grape marc: Potential for bio-based innovations","authors":"Luziana Hoxha , Mohammad J. Taherzadeh , Matteo Marangon","doi":"10.1016/j.wasman.2025.114871","DOIUrl":"10.1016/j.wasman.2025.114871","url":null,"abstract":"<div><div>There is increasing interest in repurposing by-products and residues from agricultural and agri-food industries, supporting environmental, social, and economic sustainability. Wineries and distilleries, an important segment of EU agriculture, generate substantial levels of waste annually with grape marc, a significant by-product of these industries, representing both an environmental challenge and an untapped resource. To achieve the sector’s 2050 zero-waste vision, innovative waste management strategies are crucial. This review aims to explore the potential of grape marc as a natural source of high-value compounds and its conversion into a portfolio of high-value added bio-based products. The review discusses grape marc generation and the associated waste management challenges within the wine and distillery industries. It highlights innovative biological, thermal, and chemical conversion strategies for turning grape marc into high-value products. Additionally, it provides an overview of the main components of grape marc and explores its wide range of alternative applications, with particular emphasis placed on nutraceuticals, functional food and feed, biofuels, biomaterials, and agricultural amendments. In addition, the study highlights the integration of grape marc into a fungal-based biorefinery system, as promising upcycling strategy to drive innovation in the development of bio-based products, enabling a transformative waste-to-resource pathway. The findings support the advancement of innovative and feasible valorization models, contributing to sustainable waste management practices within circular economy framework.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114871"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Chlorine evolution characteristics during lab-scale combustion of MSW pyrolysis char obtained from 200 t/d pyrolysis demonstration plant 200t /d热解示范厂获得的城市生活垃圾热解炭实验室燃烧过程中氯的演化特征

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114882

Zhaotianyi Zhang , Ao Zhou , Guan Wang , Xinmin Wang , Shuanghui Deng , Songtao Sun , Renhui Ruan , Yongqiang Chen , Yili Zhang , Xuebin Wang

{"title":"Chlorine evolution characteristics during lab-scale combustion of MSW pyrolysis char obtained from 200 t/d pyrolysis demonstration plant","authors":"Zhaotianyi Zhang , Ao Zhou , Guan Wang , Xinmin Wang , Shuanghui Deng , Songtao Sun , Renhui Ruan , Yongqiang Chen , Yili Zhang , Xuebin Wang","doi":"10.1016/j.wasman.2025.114882","DOIUrl":"10.1016/j.wasman.2025.114882","url":null,"abstract":"<div><div>Pyrolysis is an effective method for treating municipal solid waste (MSW). Chlorine in MSW causes the production of dioxins, chlorine gas (Cl<sub>2</sub>), hydrogen chloride (HCl) and some other chlorine-containing compounds, and these chlorine-containing compounds are also very harmful to the environment and human health. This study investigates chlorine evolution during the combustion of chlorine-rich MSW pyrolysis char obtained from a 200 t/d MSW pyrolysis demonstration (DEMO) project under industrial conditions. The speciation and distribution of chlorine within the MSW pyrolysis char were meticulously examined via X-ray fluorescence (XRF) spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses. The results indicate that the pyrolytic char contains 9.28 % chlorine, with 12.83 % as organic chlorine (organic-Cl) and 87.17 % as inorganic chlorine (inorganic-Cl). After combustion, the ash retains 5.65 % chlorine, all in the form of inorganic-Cl. During combustion, organic-Cl is released as HCl gas. Meanwhile, inorganic-Cl is converted to Cl<sub>2</sub> or evaporates as alkali metal chlorides. These chlorides later react with metal oxides to form HCl gas. Thermogravimetry-fourier transform infrared spectroscopy-mass spectrometry (TG-FTIR-MS) analysis indicates that organic-Cl dissociates as C-Cl and releases HCl between 220–320 °C and Cl<sub>2</sub> between 400 °C −550 °C. The microporous structure of MSW pyrolysis char significantly affects its combustion behavior. It facilitates the diffusion of chlorine-containing gases. Increasing pyrolysis temperature and time can reduce the chlorine content of MSW pyrolysis char. These findings provide valuable insights for MSW pyrolysis char reuse.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114882"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Resource efficient metal extraction and silicon wafer recovery from end-of-life monocrystalline solar cells: A chemical and environmental perspective 从报废单晶太阳能电池中提取资源效率高的金属和硅片回收：化学和环境的观点

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114867

Souradeep De , Rajarshi Bhar , Arijit Pangas , Snehal Mondal , Brajesh Kumar Dubey , Santanu Maity

{"title":"Resource efficient metal extraction and silicon wafer recovery from end-of-life monocrystalline solar cells: A chemical and environmental perspective","authors":"Souradeep De , Rajarshi Bhar , Arijit Pangas , Snehal Mondal , Brajesh Kumar Dubey , Santanu Maity","doi":"10.1016/j.wasman.2025.114867","DOIUrl":"10.1016/j.wasman.2025.114867","url":null,"abstract":"<div><div>With the rapid expansion of photovoltaic technology, managing photovoltaic-solid waste has become a growing challenge. This study presents an efficient process for recovering metals and silicon wafers from end-of-life solar cells, which has significant potential for generating auxiliary sources of revenue for the world economy and mitigating resource depletion risks along with environmental offsets. Following aluminium removal from the back of the solar cells utilizing hydrochloric acid, 99.997 % pure silver extraction was successfully done via chronoamperometric etching with an exceptionally low energy consumption of 0.012 <span><span>kWh.kg</span><svg><path></path></svg></span><sup>−1</sup>, ensuring 98.31 % extraction and 96.75 % recovery efficiency. The passivation layers were removed by hot ortho-phosphoric acid. The p-n junction etching was performed independently, yielding an average recovery of 94.46 % for alkaline etching (5 N purity) and 94.25 % for acidic etching (6 N purity). The environmental impacts of the developed recycling process were evaluated via life cycle assessment. Structural characteristics of reclaimed materials were studied using XRD, EDX and ICP-OES. A cost analysis validated the commercial viability of the process. Significant environmental offset of ∼ 230.80–251.68 kg CO<sub>2</sub> eq. for every 1.0 kg of end-of-life silicon solar cells can be achieved by reducing hazardous waste, reclaiming high-purity materials, and lowering energy demands, reinforcing the circular economy principles in PV recycling.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114867"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Beyond the runway – Quantifying the climate impact of international catering waste 超越跑道——量化国际餐饮垃圾对气候的影响

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114870

Lois Pennington , Andrew Welfle , Ben Parkes , Alice Larkin

{"title":"Beyond the runway – Quantifying the climate impact of international catering waste","authors":"Lois Pennington , Andrew Welfle , Ben Parkes , Alice Larkin","doi":"10.1016/j.wasman.2025.114870","DOIUrl":"10.1016/j.wasman.2025.114870","url":null,"abstract":"<div><div>International flights generate substantial volumes of waste that pose a unique environmental challenge, as strict biosecurity regulations require it to be disposed of through destructive methods across the world. However, the impact on the world’s climate of managing this waste remains unquantified and largely disregarded in aviation mitigation discussions. This study presents the first analysis of the contribution of cabin waste management to climate change, developing a novel methodology that combines passenger movement data with waste generation factors to quantify volumes, composition, and greenhouse gas emissions of national cabin waste. Applied to the United Kingdom as a case study, our analysis estimates that that approximately 89,000 tonnes of cabin waste entered the UK in 2022. This generated between 10,400 and 40,500 tonnes of CO<sub>2</sub> equivalent due to the mandated disposal in landfill or incineration. This climate impact is driven by regulatory requirements that prevent more sustainable waste treatment methods, and by slow industry innovations. Our model demonstrates that allowing cabin waste to be treated like domestic waste could generate climate benefits of 33,900 tonnes CO<sub>2</sub> equivalent, through material and energy recovery. With aviation movements projected to grow through to 2050, we identify specific actions that could enable more sustainable cabin waste treatment while maintaining high levels of biosecurity. This research provides a replicable framework for other nations to quantify their cabin waste climate impacts, and evidence-based pathways for urgent regulation and operational reform.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114870"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0