Waste management最新文献_第8页

BIM-driven transformation of waste management toward enhanced reduction and circularity in the built environment bim驱动的废物管理转型，以加强建筑环境的减少和循环

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-04 DOI: 10.1016/j.wasman.2025.115105

Hanane BOUHMOUD , Dalila LOUDYI , Andrea GIORDANO

{"title":"BIM-driven transformation of waste management toward enhanced reduction and circularity in the built environment","authors":"Hanane BOUHMOUD , Dalila LOUDYI , Andrea GIORDANO","doi":"10.1016/j.wasman.2025.115105","DOIUrl":"10.1016/j.wasman.2025.115105","url":null,"abstract":"<div><div>Construction and Demolition Waste (CDW) results in substantial environmental, economic and social losses. Alternatively, Building Information Modeling (BIM) was pointed as a promising technology to achieve zero-waste goals. Recent studies showed that BIM use for CDW Management and Assessment (CDWM/A) is still limited and needs a better understanding. This research addresses this gap through a systematic review. The study revealed that BIM disposes of 5 instruments and 6 functionalities that allow important CDW minimization and inclusion of extrinsic CDWM/A resources into an integrated environment. The paper classified 39 CDWM/A guidelines into 3 categories and examined 15 data inventories supporting the analysis of CDW plans and impacts. nD-BIM data scalability was demonstrated to ensure integration of these resources into a single model, enabling multiparametric simulations and accurate CDWM/A. Similarly, the study discloses 57 digital tools used to assist CDWM/A and develop new solutions, and other 51 to manage/assess CDW environmental impacts. BIM interoperability was confirmed to foster an inclusive environment in which tools can collaborate and operate with 19 other technologies, ensuring enhanced CDWM/A and leveraging existing wares. Accordingly, the paper introduces nD BIM-WMS, a CDWM/A system disclosing how intrinsic and extrinsic BIM environments can be interconnected to enable efficient BIM-based CDWM/A through a practical algorithm maximizing the 4R principle reward, thereby supporting balanced, well-managed, and optimized sustainability. Overall, the study affirms BIM’s potential to advance zero-net waste and equips scholars and practitioners with well-founded knowledge and methodological system, paving the path for grounded research, regulation, and innovation in this field.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115105"},"PeriodicalIF":7.1,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997266","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

Interpretable machine learning for predicting key hazardous properties of chemicals 用于预测化学品关键危险特性的可解释机器学习

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-04 DOI: 10.1016/j.wasman.2025.115111

Kunsen Lin , Boyang Liao , Xiaochuan Chen , Caiyun Chen , Wenhao Lei , Xuefei Zhou

{"title":"Interpretable machine learning for predicting key hazardous properties of chemicals","authors":"Kunsen Lin , Boyang Liao , Xiaochuan Chen , Caiyun Chen , Wenhao Lei , Xuefei Zhou","doi":"10.1016/j.wasman.2025.115111","DOIUrl":"10.1016/j.wasman.2025.115111","url":null,"abstract":"<div><div>Accurate prediction of hazardous chemical properties such as toxicity, flammability, reactivity, and reactivity with water (RW) is essential for the safe handling, storage, and transport of chemicals in industrial and environmental contexts. Traditional experimental methods are time-consuming, costly, and struggle to capture the complex, dynamic relationships between molecular structure and hazardous properties. Moreover, many conventional models lack interpretability, making it difficult to understand the underlying molecular interactions driving these properties. In this study, we developed 8 machine learning models to predict these four hazardous properties based on molecular descriptors. The models were trained on self-curated datasets, incorporating advanced techniques for feature selection and interpretability. The most optimal model was further applied to predict the hazardous properties of the hazardous chemicals list. Results show that XGBoost achieved superior performance in predicting toxicity (0.768) and reactivity (0.917), while RF excelled in flammability (0.952) and RW (0.852) in terms of ROC-AUC. For Ketone/Aldehyde compounds, SHAP and ICE analyses identified key molecular descriptors such as MIC4, ATSC2i, ATS4i and ETA_dEpsilon_C as critical determinants for toxicity, flammability, reactivity, and RW respectively. Notably, 100% of the hazardous chemicals list were predicted to be flammable, 99.5% toxic, 66.4% reactive, and only 0.4% exhibited RW. The results demonstrate the potential of machine learning models to provide efficient and scalable predictions, reducing the need for costly experimental testing while improving safety protocols for hazardous chemical management.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115111"},"PeriodicalIF":7.1,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997136","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

Systematic assessment of landfill mining potential in Zhejiang Province, China: Resource recovery and economic potential 浙江省垃圾填埋场采矿潜力系统评价：资源回收与经济潜力

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-02 DOI: 10.1016/j.wasman.2025.115102

Zongao Zhen , Xianchao Xiang , Hao Zhang , Shi Feng , Jingyuan Sima , Fangfang Lou , Qunxing Huang , Mika Horttanainen , Xiaodong Li

{"title":"Systematic assessment of landfill mining potential in Zhejiang Province, China: Resource recovery and economic potential","authors":"Zongao Zhen , Xianchao Xiang , Hao Zhang , Shi Feng , Jingyuan Sima , Fangfang Lou , Qunxing Huang , Mika Horttanainen , Xiaodong Li","doi":"10.1016/j.wasman.2025.115102","DOIUrl":"10.1016/j.wasman.2025.115102","url":null,"abstract":"<div><div>Landfilling has been the predominant municipal solid waste disposal method in recent decades. Recently, landfill mining has gained attention due to increasing raw material costs and environmental concerns. However, most research has focused on individual or limited specific cases, with insufficient studies on landfill mining potential at the regional or national level. This study established a regional-scale evaluation of the economic viability and environmental benefits of landfill mining in Zhejiang Province, China. Six representative landfills were selected based on an investigation of the status of landfills in the province. Using a waste age map, 316 waste samples weighing 816.56 kg were meticulously collected from 27 sampling points across the six landfills, covering waste generated from 1994 to 2020. The correlation analysis explored the relationship between landfill waste composition and landfill conditions/socio-economic factors, providing a basis for the preliminary assessment of waste composition based on landfill conditions and the socio-economic characteristics of the landfill service area. Additionally, the study evaluates the economic and environmental potential of landfill mining. The economic assessment highlighted the potential of landfill mining for societal actors, with potential NPV ranging from 26.2 to 47.8 USD/ton. Notable environmental benefits also be observed, with potential greenhouse gas emission reductions of 0.09–0.51 kg CO<sub>2</sub>-eq/ton and leachate reductions of 0.34–2.13 m<sup>3</sup>/ton. This study offers valuable insights into the resource recovery as well as the economic and environmental potential of landfill mining in Zhejiang Province, and serves as a useful reference for broader regional or national-scale assessments.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115102"},"PeriodicalIF":7.1,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926785","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

Distribution patterns and influencing factors of pathogenic microbial communities in household municipal solid waste: A case in Beijing, China 北京市生活垃圾中病原微生物群落分布规律及影响因素分析

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-02 DOI: 10.1016/j.wasman.2025.115099

Silan Zhao , Jiayi Yuan , Shengwei Wang , Minghui Dang , Yanqing Liu , Wenjing Lu , Yan Zhao

{"title":"Distribution patterns and influencing factors of pathogenic microbial communities in household municipal solid waste: A case in Beijing, China","authors":"Silan Zhao , Jiayi Yuan , Shengwei Wang , Minghui Dang , Yanqing Liu , Wenjing Lu , Yan Zhao","doi":"10.1016/j.wasman.2025.115099","DOIUrl":"10.1016/j.wasman.2025.115099","url":null,"abstract":"<div><div>Household municipal solid waste (MSW) provides a suitable environment for the propagation and emission of pathogens, and revealing their distribution patterns and influencing factors is important for source control of the potential risks. This study analyzed the microbial communities of pathogenic bacteria and fungi in MSW, by collecting both food waste and residual waste samples from a high-density residential area in Beijing for 11 months. Alpha diversity analysis indicated that the microbial diversity differed significantly between food waste and residual waste; however, <em>Weissella</em> and <em>Candida</em> were consistently detected at high proportions. In total, 43 pathogenic bacterial and fungal species each were detected. <em>Candida albicans</em>, <em>Candida tropicalis</em>, <em>Enterococcus faecalis</em>, <em>Serratia liquefaciens</em>, and <em>Acinetobacter johnsonii</em> were identified as core pathogens with high relative abundances and occurrence frequencies. While warmer seasons appeared to favor the accumulation of pathogens, no significant correlation between communities and seasons was found. Pathogenic microbial communities differed significantly among waste types, with relative abundances of bacterial pathogens being higher in residual waste than in food waste, and vice versa for fungal pathogens. Waste properties, including protein, carbon, and hydrogen contents and electrical conductivity are crucial in shaping the pathogenic microbial diversity, and environmental conditions including temperature, atmospheric pressure, and relative humidity also contribute. The findings in distribution patterns and influencing factors of pathogens in household MSW provide a scientific basis for the source control and further assessment of occupational health risks in waste management.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115099"},"PeriodicalIF":7.1,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933243","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

Identifying hundredfold carbon emission gaps in multiple resource recycling routes of construction waste via process and hybrid life cycle assessment 通过过程和混合生命周期评估，确定建筑垃圾多种资源回收路线的百倍碳排放差距

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-02 DOI: 10.1016/j.wasman.2025.115107

Rui Chen , Haiyuan Wu , Junjie Li , Hao Wang , Lanxin Li , Linlin Sun , Fumin Ren

{"title":"Identifying hundredfold carbon emission gaps in multiple resource recycling routes of construction waste via process and hybrid life cycle assessment","authors":"Rui Chen , Haiyuan Wu , Junjie Li , Hao Wang , Lanxin Li , Linlin Sun , Fumin Ren","doi":"10.1016/j.wasman.2025.115107","DOIUrl":"10.1016/j.wasman.2025.115107","url":null,"abstract":"<div><div>Resource recycling of construction waste can be an effective substitute for the production of building materials, significantly reduce environmental pollution and ecological damage while lowering carbon emissions. However, existing studies lack a comprehensive and accurate comparison of different recycling processes, making it difficult to fully and accurately determine the associated carbon reduction potential. In this paper, process life cycle assessment (LCA) and hybrid LCA models are used to calculate carbon emissions from resource recycling of construction waste. The results show the carbon emissions of primary resource recycling of construction waste for recycled aggregate, secondary resource recycling of cement stabilized recycled aggregate crushed stone, and recycled concrete solid brick are 2.169 kg CO<sub>2</sub>eq/t, 37.019 kg CO<sub>2</sub>eq/t, and 77.144 kg CO<sub>2</sub>eq/t, respectively, and these three recycling pathways are the lowest carbon methods; The carbon emissions calculated by the process LCA model are only about 0.07–0.15 % of those calculated by the hybrid LCA model; An analysis of the sensitivity of recycled building materials to inputs of electricity, diesel and natural gas, alongside an uncertainty analysis of the input data for the computational model, verified the validity of the data and the accuracy of the calculations from both models. The research findings also provide guidance on the selection, use and improvement of LCA models and offer reasonable carbon reduction strategies for relevant enterprises. Furthermore, the findings provide comprehensive insights into the application scenarios of different carbon accounting methods and offer scientific data to support the low-carbon recycling of construction waste.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115107"},"PeriodicalIF":7.1,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933244","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

Retraction notice to "From waste to innovation: silver-doped silicate ink coating from waste coal fly ash for hydrophobic antimicrobial fabric and water-oil separation". [Waste Manage. 194 (2025) 238-248]. 关于“从废到创新：废煤粉煤灰掺杂银硅酸盐油墨涂料用于疏水抗菌织物和水油分离”的撤回通知。[j].环境科学与技术，2014,(5):388 - 388。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-01 Epub Date: 2025-08-07 DOI: 10.1016/j.wasman.2025.115014

Zawar Hussain, Adil Saleem, Lizhen Gao

引用次数: 0

Design and establishment of a biofilter for treatment of manure methane emissions 设计并建立处理粪便甲烷排放的生物过滤器

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-01 DOI: 10.1016/j.wasman.2025.115087

Julie Maria Falk , Peter Kjeldsen , Anders Michael Fredenslund , Christian Buck , Charlotte Scheutz

{"title":"Design and establishment of a biofilter for treatment of manure methane emissions","authors":"Julie Maria Falk , Peter Kjeldsen , Anders Michael Fredenslund , Christian Buck , Charlotte Scheutz","doi":"10.1016/j.wasman.2025.115087","DOIUrl":"10.1016/j.wasman.2025.115087","url":null,"abstract":"<div><div>During the storage of livestock manure in tanks, anaerobic degradation of organic material results in the production and emission of CH<sub>4</sub>. This study tested a biofilter designed for CH<sub>4</sub> oxidation as a potential technology for mitigating CH<sub>4</sub> emissions from covered manure storage tanks. A full-scale biofilter (400 m<sup>2</sup>) was built next to a pig manure tank (4.400 m<sup>3</sup>). Total yearly CH<sub>4</sub> emissions from the manure tank prior to the establishment of the biofilter varied between 2.1 and 21.1 kg h<sup>−1</sup>. With a pump flow of ∼ 100 m<sup>3</sup> h<sup>−1</sup>, it was possible to collect 75 % of the produced gas from the headspace of the tent covered manure tank. The average biofilter CH<sub>4</sub> load for the first year was 4.6 kg CH<sub>4</sub> h<sup>−1</sup>, and the total yearly load was 42 tons of CH<sub>4</sub>. The biofilter was monitored for 1.5 years by measuring the collected gas, gas concentrations in the gas distribution layer and the temperature and moisture in the CH<sub>4</sub> oxidation layer. Gas concentrations in the gas distribution layer were similar to inlet gas concentrations, indicating efficient gas transportation and distribution in the biofilter, whilst biofilter surface CH<sub>4</sub> screenings revealed only a few localised emission hotspots. The annual average temperature in the biofilter was 49 °C and was related to the CH<sub>4</sub> load. When the CH<sub>4</sub> load to the biofilter was stable and above 2 kg CH<sub>4</sub> h<sup>−1</sup>, the temperature in the oxidation layer was found to be around 57 °C or higher, indicating that CH<sub>4</sub> oxidation was occurring.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"206 ","pages":"Article 115087"},"PeriodicalIF":7.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996515","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

Simultaneous recovery of valuable components from spent LiNi_0.6Co_0.2Mn_0.2O₂ and LiFePO₄ batteries by ammonium sulfate roasting-leaching. 硫酸铵焙烧浸出法同时回收废LiNi0.6Co0.2Mn0.2O2和LiFePO4电池中有价组分

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-01 Epub Date: 2025-08-08 DOI: 10.1016/j.wasman.2025.115051

Gaomiao Li, Guoquan Zhang, Jia Li, Yue Yan, Jun He, Ying Zhang

{"title":"Simultaneous recovery of valuable components from spent LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> and LiFePO<sub>4</sub> batteries by ammonium sulfate roasting-leaching.","authors":"Gaomiao Li, Guoquan Zhang, Jia Li, Yue Yan, Jun He, Ying Zhang","doi":"10.1016/j.wasman.2025.115051","DOIUrl":"10.1016/j.wasman.2025.115051","url":null,"abstract":"<p><p>To further reduce the cost and energy consumption of recycling spent lithium-ion batteries (LIBs), this paper proposes a novel technique for simultaneously recovering Li, Ni, Co, and Mn from spent LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> (S-NCM) and LiFePO<sub>4</sub> (S-LFP) batteries using ammonium sulfate mixed roasting. Thermogravimetric analysis of the mixture and XRD analysis of the roasting products indicate that (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> begins to decompose at around 275 °C, forming NH<sub>4</sub>HSO<sub>4</sub>, which participates in the reaction above 350 °C. Above 375 °C, sulfates are generated as reaction products. FT-IR analysis revealed that the peak at 630 cm<sup>-1</sup>, corresponding to metal sulfates in the roasted product, significantly decreased in intensity after leaching, indicating the formation of soluble sulfates. Optimization of the roasting conditions reveals that at a roasting temperature of 400 °C, a roasting time of 60 min, and an ammonium sulfate ratio of 1/1/8, the recovery efficiencys of Li, Ni, Co, and Mn are 94.0 %, 95.6 %, 93.7 %, and 98.7 %, respectively. Energy and environmental analysis using the Ever Batt model demonstrates that the energy consumption of this method is only 52 % of commercial hydrometallurgical processes, and greenhouse gas emissions are only 38 % of commercial pyrometallurgical processes.</p>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"206 ","pages":"115051"},"PeriodicalIF":7.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144812421","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

Optimizing co-combustion of sewage sludge and bamboo scraps: Analysis of NO emissions and ash slagging behavior. 污泥与竹片共烧优化：NO排放与灰结渣行为分析。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-01 Epub Date: 2025-08-18 DOI: 10.1016/j.wasman.2025.115070

Xiang Liu, Zhanshi Ni, Junjian Tian, Kesheng Meng, Qizhao Lin

{"title":"Optimizing co-combustion of sewage sludge and bamboo scraps: Analysis of NO emissions and ash slagging behavior.","authors":"Xiang Liu, Zhanshi Ni, Junjian Tian, Kesheng Meng, Qizhao Lin","doi":"10.1016/j.wasman.2025.115070","DOIUrl":"10.1016/j.wasman.2025.115070","url":null,"abstract":"<p><p>This paper investigates the co-combustion of sewage sludge (SS) and bamboo scraps (BS) in a tubular furnace at 700 °C, 800 °C, and 900 °C, focusing on NO emission characteristics and ash slagging behavior. NO emissions from SS combustion occur in two distinct stages, corresponding to the release and reaction of volatile-N and char-N, respectively. Increasing the BS content decreases total NO emissions but raises NO formation from char-N. BS promotes NO production from volatile-N while delaying and reducing NO from char-N, resulting in an overall increase in total NO under most conditions. Flue gas analysis shows that higher temperatures accelerate combustion but reduce the conversion rate of nitrogen to NO. Ash characterization by XRF, XRD, and SEM reveals that ash fusibility increases with temperature. SS ash, rich in SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub>, forms refractory mineral phases like mullite (3Al<sub>2</sub>O<sub>3</sub>·2SiO<sub>2</sub>), which cause partial sintering and adhesion, increasing slagging risk during cooling. Conversely, BS ash contains higher alkali metal oxides, lowering the ash melting temperature and enhancing fluidity, which reduces slagging risk at high temperatures but may promote slag deposition in cooler zones. Co-combustion fosters the formation of alkali-metal silicates, influencing ash melting behavior. Optimizing the SS/BS blend ratio can balance NO emissions and slagging tendencies, offering guidance for sustainable biomass waste utilization.</p>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"206 ","pages":"115070"},"PeriodicalIF":7.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144875504","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

Fate and removal of per- and polyfluoroalkyl substances throughout landfill leachate treatment processes: Uncovering precursor transformation and sludge-mediated reappearance. 垃圾渗滤液处理过程中全氟烷基和多氟烷基物质的命运和去除：揭示前体转化和污泥介导的再现。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-09-01 Epub Date: 2025-08-07 DOI: 10.1016/j.wasman.2025.115050

Liping Chen, Xia Yu, Lankun Cai, Qian Sui

{"title":"Fate and removal of per- and polyfluoroalkyl substances throughout landfill leachate treatment processes: Uncovering precursor transformation and sludge-mediated reappearance.","authors":"Liping Chen, Xia Yu, Lankun Cai, Qian Sui","doi":"10.1016/j.wasman.2025.115050","DOIUrl":"10.1016/j.wasman.2025.115050","url":null,"abstract":"<p><p>Per- and polyfluoroalkyl substances (PFAS) in municipal solid waste (MSW) landfill leachate have emerged as a critical research focus because of their substantial environmental and health risks. However, the fate and transformation of PFAS across different treatment processes, particularly within specific techniques such as biotreatment, remains understudied in current research. This study systematically investigated the occurrence, fate, and removal of PFAS in a full-scale MSW landfill leachate treatment system in Shanghai, China. Thirty-two PFAS were analyzed in the raw leachate and the whole treatment process, including the equalization tank, the membrane bioreactor (MBR) system, and the nanofiltration (NF) process. Results showed that perfluorooctanoic acid (PFOA) and perfluorobutanesulfonic acid (PFBS) were the predominant compounds in both the raw leachate and effluents. The MBR process exhibited negative removal efficiencies for short-chain PFAS (-187.4 % to -103.5 %), indicating substantial precursor transformation, while NF achieved effective removal (42.1 % to 95.6 %). Solid phases of the sludge samples accumulated long-chain PFAS (log K<sub>d</sub> up to 4.4), acting as significant secondary sources. Mass flow analysis revealed that denitrification processes increased the absolute daily load of PFOA (calculated as concentration × flow rate) by 4286 %, with the total oxidizable precursor (TOP) assays demonstrating thefluorotelomer-based precursors were the major contributors to perfluoroalkyl carboxylic acids (PFCAs) formation. The findings provide essential insights for developing more effective leachate treatment strategies and sludge management approaches to mitigate PFAS environmental release from MSW landfills.</p>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"206 ","pages":"115050"},"PeriodicalIF":7.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144805003","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