Waste management最新文献_第8页

Promoting effect of ammonia oxidation on sulfur oxidation during composting: Nitrate as a bridge 堆肥过程中氨氧化对硫氧化的促进作用：硝酸盐作为桥梁

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-05 DOI: 10.1016/j.wasman.2024.10.032

Lingxiao Wang, Zhiping Ren, Zhao Xu, Lixin Liu, Ruixue Chang, Yanming Li

{"title":"Promoting effect of ammonia oxidation on sulfur oxidation during composting: Nitrate as a bridge","authors":"Lingxiao Wang, Zhiping Ren, Zhao Xu, Lixin Liu, Ruixue Chang, Yanming Li","doi":"10.1016/j.wasman.2024.10.032","DOIUrl":"10.1016/j.wasman.2024.10.032","url":null,"abstract":"<div><div>Ammonia (NH<sub>3</sub>) and hydrogen sulfide (H<sub>2</sub>S) are the main odor components in the composting process. Controlling their emissions is very important to reduce environmental pollution and improve the quality of composting products. This study explored the effects of functional bacteria on nitrogen and sulfur metabolism in the composting process of food waste (FW) by adding ammonia-oxidizing bacteria (AOB, A treatment), sulfur-oxidizing bacteria (SOB, S treatment), and combined AOB and SOB (AS treatment), respectively. The key bacterial species involved in nitrogen and sulfur transformation were identified, and the intrinsic mechanisms by which ammonia oxidation drove sulfur oxidation during composting were deciphered. Compared with control treatment (CK), the combined addition of functional microorganisms increased the maximum of <em>soxB</em> gene abundance by 1.72 times, thus resulting in the increase in the SO<sub>4</sub><sup>2-</sup> content by 44.00 %. AS treatment decreased the cumulative H<sub>2</sub>S emission and total sulfur (TS) loss by 40.24 % and 34.69 %, respectively, meanwhile lowering NH<sub>3</sub> emission. Correlation network analysis showed that the simultaneous addition of AOB and SOB enhanced the correlation between microorganisms and sulfur oxidation genes, and <em>Acinetobacter</em>, <em>Aeribacillus</em>, <em>Brevibacterium</em> and <em>Ureibacillus</em> might be involved in the ammonia oxidation-promoted sulfur oxidation process. In summary, the optimized inoculation strategy of AOB and SOB could drive biological transformation of nitrogen and sulfur by regulating microbial community, ultimately reducing odor emissions and improving sulfur conservation.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"191 ","pages":"Pages 13-22"},"PeriodicalIF":7.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586597","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

Synthesis, characterization, and efficacy of alkali-activated materials from mine tailings: A review 从矿山尾矿中提取的碱活性材料的合成、特征和功效：综述。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-05 DOI: 10.1016/j.wasman.2024.10.036

Adeyemi Adesina

{"title":"Synthesis, characterization, and efficacy of alkali-activated materials from mine tailings: A review","authors":"Adeyemi Adesina","doi":"10.1016/j.wasman.2024.10.036","DOIUrl":"10.1016/j.wasman.2024.10.036","url":null,"abstract":"<div><div>Annually, over 5 billion metric tons of tailings are produced worldwide as byproducts of mining processes, posing significant environmental risks due to their potential to pollute and disrupt ecosystems. Concurrently, the production of portland cement (PC), the primary binder in cementitious materials is a major contributor to global anthropogenic carbon dioxide emissions. With the escalating demand for PC, a corresponding surge in carbon emissions is inevitable. Alkali-activated materials (AAMs) present a greener alternative to PC, given their production primarily utilizes industrial wastes. Traditional precursors for AAMs, such as fly ash and slag, however, are not universally available—Canada, for instance, faces a scarcity of fly ash for AAM production. In response to the dual challenges of managing mine tailings and reducing PC’s environmental footprint, this review proposes the innovative use of mine tailings as an alternative binder to PC. This paper offers a thorough examination of mine tailings’ properties, methodologies to enhance their suitability for AAM synthesis, and an analysis of AAMs produced from diverse tailing sources. Additionally, this paper explores the associated challenges and future prospects, providing a rounded overview of this promising avenue in sustainable construction materials.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"191 ","pages":"Pages 23-46"},"PeriodicalIF":7.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

A novel acid-free combined technology to achieve the full recovery of crystalline silicon photovoltaic waste 实现晶体硅光伏废料完全回收的新型无酸组合技术

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-04 DOI: 10.1016/j.wasman.2024.10.031

Mi Lin, Pengcheng Wang, Baojia Qin, Jujun Ruan

{"title":"A novel acid-free combined technology to achieve the full recovery of crystalline silicon photovoltaic waste","authors":"Mi Lin, Pengcheng Wang, Baojia Qin, Jujun Ruan","doi":"10.1016/j.wasman.2024.10.031","DOIUrl":"10.1016/j.wasman.2024.10.031","url":null,"abstract":"<div><div>To achieve the global carbon neutrality commitment, photovoltaics, a clean and renewable source of energy, is increasingly deployed. Photovoltaic panels are core components of photovoltaic systems. As these panels reach the end of their life, recovering the photovoltaic waste becomes crucial. Currently, strong acid reagents are commonly used in the recovery of silver from crystalline silicon photovoltaic waste, posing environmental risks and restricting the industrialization of their recycling. In this study, a novel acid-free technology to achieve the full recovery of crystalline silicon photovoltaic waste was proposed. A pyrolysis process was first conducted for decapsulation, with carbon dioxide being the main gas component at 60.64 %. Next, bioleaching technology was employed to leach silver from waste crystalline silicon photovoltaic cells. The silver leaching rate in a single leaching cycle reached 44.7 %. Meanwhile, the mechanism of silver leaching was further analyzed. Finally, high-velocity fluid frictional separation, a technique that uses high-speed fluid flow to separate material, was chosen to obtain silicon wafers. The reclaimed silicon samples had a total thickness variation of 6.64 µm to11.62 µm, with average carrier lifetimes exceeding 4.9 µs, higher than that obtained by wet etching. This study is expected to advance the industrialization of the recovery of photovoltaic waste, which is also beneficial for the sustainable development of the photovoltaic supply chain.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 666-675"},"PeriodicalIF":7.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577977","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

Disintegration of certified compostable plastic bags in outdoor household composting conditions 经认证的可堆肥塑料袋在室外家用堆肥条件下的分解情况

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-04 DOI: 10.1016/j.wasman.2024.10.028

Emily Bryson , Lisa Bricknell , Ryan Kift , Amie Anastasi

{"title":"Disintegration of certified compostable plastic bags in outdoor household composting conditions","authors":"Emily Bryson , Lisa Bricknell , Ryan Kift , Amie Anastasi","doi":"10.1016/j.wasman.2024.10.028","DOIUrl":"10.1016/j.wasman.2024.10.028","url":null,"abstract":"<div><div>Picking up dog faeces with single use plastic bags and disposing in landfill is a common practice which ultimately harms the environment. Compostable plastic dog waste bags may help to divert these wastes from landfill and recover dog faeces as a compost feedstock, though little is known about how certified home compostable plastics behave in real world home compost systems. This study investigated the disintegration of commercially available certified home compostable plastic bags in outdoor home composts containing dog faeces. Two pilot trials (25 L) and one household trial (160 L) were conducted over 7, 15, and 9.5 months, respectively. Thermophilic temperatures were reached in all trials while moisture and pH were within optimal ranges for well managed compost systems. Bags showed statistically significant differences in disintegration. Based on final mass, none of the tested bags met the Australian Standard AS5810 minimum disintegration requirements of 90 % mass loss of plastic fragments >2 mm, with average mass change of certified home compostable bags ranging from +1.51 to −81.28 %. All certified industrial compostable bags showed an average mass increase of 10.90–35.04 % during composting. However, time series images of plastic fragmentation indicated some bags fully disintegrated and revealed residual biofilm that may have affected mass change data. Microplastic fragments < 2mm and macroplastic fragments >5 mm were recovered in all composts. Due to the potential risks of using home compost contaminated with microplastics in household gardens, dog owners should avoid including compostable plastic bags in their home composts.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 654-665"},"PeriodicalIF":7.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Dynamic ammonium retention for nutrient separation from manure digestate 从粪便沼渣中分离养分的动态氨截留法

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-04 DOI: 10.1016/j.wasman.2024.10.034

Marrit van der Wal, Joep van Alphen, Kitty Nijmeijer, Zandrie Borneman

{"title":"Dynamic ammonium retention for nutrient separation from manure digestate","authors":"Marrit van der Wal, Joep van Alphen, Kitty Nijmeijer, Zandrie Borneman","doi":"10.1016/j.wasman.2024.10.034","DOIUrl":"10.1016/j.wasman.2024.10.034","url":null,"abstract":"<div><div>Extensive nitrogen emissions with negative impact on nature and the environment urge effective valorization of manure and fractionation of nutrients to enable precision fertilization. Typically, manure is fed to a digester to produce biogas. The remaining digestate is then mechanically separated into a solid phosphorous-rich fraction and a liquid fraction containing both NH<sub>4</sub><sup>+</sup> and K. These ions are difficult to separate due to their very identical size and charge. We show that with smart tuning of the pH to control the NH<sub>3</sub>/NH<sub>4</sub><sup>+</sup> equilibrium, membranes can produce dedicated N and K-rich streams. The increased pH switches the equilibrium towards the neutrally charged solute NH<sub>3</sub> that permeates more easily through the membrane than charged NH<sub>4</sub><sup>+</sup> and K<sup>+</sup> ions. Experiments with both artificial NH<sub>4</sub>Cl/KCl mixtures as well as real liquid digestate and four different membrane types, ranging from open nanofiltration (NF) to sea water reverse osmosis (RO) membranes were performed. At neutral pH, no N/K selectivity was observed, not for single components nor for mixtures. When the pH was increased towards alkaline environment, distinct selectivity for N/K was obtained both with model solutions and real liquid digestate. At a suitable pH of 10, with >80 % of the total ammonia present as NH<sub>3</sub>, the RO BW membrane showed a large N/K selectivity of 35 in the crossflow system. Additional RO steps at low pH allows subsequent concentration of the formed NH<sub>4</sub><sup>+</sup> and K<sup>+</sup> fractions. The presented dynamic pH approach proofs that in a two-step RO system both N, and K-enriched fertilizers can be produced from real liquid digestate.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 644-653"},"PeriodicalIF":7.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

A hybrid classification and evaluation method based on deep learning for decoration and renovation waste in view of recycling 基于深度学习的混合分类和评估方法，适用于装饰和装修垃圾的回收利用

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-04 DOI: 10.1016/j.wasman.2024.10.027

Pujin Wang , Jianzhuang Xiao , Ruoyu Liu , Xingxing Qiang , Zhenhua Duan , Chaofeng Liang

{"title":"A hybrid classification and evaluation method based on deep learning for decoration and renovation waste in view of recycling","authors":"Pujin Wang , Jianzhuang Xiao , Ruoyu Liu , Xingxing Qiang , Zhenhua Duan , Chaofeng Liang","doi":"10.1016/j.wasman.2024.10.027","DOIUrl":"10.1016/j.wasman.2024.10.027","url":null,"abstract":"<div><div>The escalating volume of decoration and renovation waste (D&RW) amid the rapid urbanization in China has posed significant challenges for the effective recycling of this waste stream, primarily due to the difficulty of accurately assessing its precise composition. To enhance the recycling of high-value materials from D&RW, a comprehensive understanding of its composition and quality is crucial before sorting. In this study, we propose a hybrid method that combines instance segmentation deep learning (DL) models with morphological machine learning (ML) models to automate the classification and evaluation of D&RW. A meticulously labeled dataset comprising 53,000 individual grains is curated for classification and instance segmentation. Subsequently, the ML model predicts the equivalent thickness of a grain according to the grain morphological data vector. The D&RW grains are then evaluated for weight based on the model outputs. The proposed method exhibits remarkable accuracy, as indicated by a relative low error of 2.8% in total weight evaluation between the model’s predictions and manual sorting.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"191 ","pages":"Pages 1-12"},"PeriodicalIF":7.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578812","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

Treating waste with waste: Treatment of textile wastewater using upcycled food waste as a pore-forming agent in the fabrication of ceramic membranes employing DOE/FFD design 以废治废：在采用 DOE/FFD 设计的陶瓷膜制造过程中，使用可循环利用的厨余作为孔隙形成剂处理纺织废水。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-03 DOI: 10.1016/j.wasman.2024.10.029

Yassine Rakcho , Aicha Naboulsi , Taoufiq Bouzid , Younes Abouliatim , Abdelaziz Benhammou , Abdelkrim Abourriche , Jones Alami

{"title":"Treating waste with waste: Treatment of textile wastewater using upcycled food waste as a pore-forming agent in the fabrication of ceramic membranes employing DOE/FFD design","authors":"Yassine Rakcho , Aicha Naboulsi , Taoufiq Bouzid , Younes Abouliatim , Abdelaziz Benhammou , Abdelkrim Abourriche , Jones Alami","doi":"10.1016/j.wasman.2024.10.029","DOIUrl":"10.1016/j.wasman.2024.10.029","url":null,"abstract":"<div><div>This study investigates a novel method for food waste management by using it as a sustainable replacement for conventional pore-forming agents in ceramic membrane production. The membranes were analyzed using various techniques, including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and a universal testing machine. The morphologies of the membranes were observed using scan electron microscopy (SEM). The effects of particle size (45–125 μm), pore-forming agent (5–20 wt%), and sintering temperature (900–1150 °C) on the porosity and mechanical strength of the membranes were investigated using the Design of Experiments (DoE) and Response Surface Methodology (RSM). The optimized membrane was evaluated for its performance in filtering industrial textile wastewater. It achieved impressive results, with approximately 98.4 % removal of turbidity and 71.3 % removal of chemical oxygen demand. This research paves the way for optimizing ceramic membrane fabrication using upcycled food waste, promoting sustainability and offering potential solutions for both food waste management and industrial wastewater treatment challenges.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 632-643"},"PeriodicalIF":7.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569759","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

Monitoring sustainable waste management in OECD countries: A Malmquist productivity approach 监测经合组织国家的可持续废物管理：Malmquist 生产率方法。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-11-02 DOI: 10.1016/j.wasman.2024.10.035

George E. Halkos , Panagiotis – Stavros C. Aslanidis

{"title":"Monitoring sustainable waste management in OECD countries: A Malmquist productivity approach","authors":"George E. Halkos , Panagiotis – Stavros C. Aslanidis","doi":"10.1016/j.wasman.2024.10.035","DOIUrl":"10.1016/j.wasman.2024.10.035","url":null,"abstract":"<div><div>Sustainable waste management (SWM) practices are crucial for tackling environmental concerns under a circular economy (CE) scope. Thirty-one OECD countries have been evaluated on their national SWM performance via Malmquist data envelopment analysis (DEA) methodology from 2000 to 2021. The Malmquist (MPI) and Malmquist-Luenberger (MLPI) productivity indices are compared based on their total factor productivity (TFP) and its elements (i.e., efficiency and technological changes). Both models have the gross domestic product (GDP) as a desirable output, but MLPI also incorporates municipal solid waste (MSW) generation and greenhouse gases (GHGs, i.e. CO<sub>2</sub> and CH<sub>4</sub>) as undesirable outputs. MLPI has a lower average performance (1.74%) than MPI (4.42%), meaning that the incorporation of waste and GHGs has diminished an OECD country’s SWM performance by 2.5 times on average. In essence, it is innovation that drives TFP in the selected countries. Overall, the synergistic implementation of SWM practices, Malmquist DEA-based methodology, and CE principles is crucial for advancing sustainable development and achieving a circular and resilient future. The manuscript also offers policy implications regarding the need of financial incentives, vocational training, and fostering stakeholder encouragement in the waste sectors to implement CE solutions.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 623-631"},"PeriodicalIF":7.1,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569758","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

Perceived social cohesion and littering control behavior in China: The mediating role of subjective social status 感知到的社会凝聚力与中国的垃圾控制行为：主观社会地位的中介作用

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-31 DOI: 10.1016/j.wasman.2024.10.024

Yang Zhao, Steven Van de Walle

{"title":"Perceived social cohesion and littering control behavior in China: The mediating role of subjective social status","authors":"Yang Zhao, Steven Van de Walle","doi":"10.1016/j.wasman.2024.10.024","DOIUrl":"10.1016/j.wasman.2024.10.024","url":null,"abstract":"<div><div>Littering is a serious social issue in China, even though residents disapprove of this behavior. When residents live in communities with high social cohesion, residents may stop other residents from littering; this is referred to as littering control behavior. We use collective efficacy theory to discuss the association between perceived social cohesion and littering control behavior in China. Perceived social cohesion consists of social relationship density, social trust, and social support, which can promote littering control behavior and thus achieve collective efficacy. Using binary logistic regression and mediation analyses, we address this question via the 2018 wave of the China Labor-force Dynamics Survey (n = 4808). We find that perceived social cohesion is positively associated with littering control behavior. We also find that subjective social status may be a mediating mechanism through which perceived social cohesion promotes littering control behavior. For governments, policies to stop littering should address social cohesion and improve residents’ subjective social status.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 613-622"},"PeriodicalIF":7.1,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560606","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

Investigation of preferential flow and leakage location in landfill: A field tracer test and numerical analysis 垃圾填埋场优先流和渗漏位置调查：现场示踪试验和数值分析。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-30 DOI: 10.1016/j.wasman.2024.10.021

Shuangke Fei , Haijian Xie , Peifu Cai , Weizhong Xu , Hongyan Li

{"title":"Investigation of preferential flow and leakage location in landfill: A field tracer test and numerical analysis","authors":"Shuangke Fei , Haijian Xie , Peifu Cai , Weizhong Xu , Hongyan Li","doi":"10.1016/j.wasman.2024.10.021","DOIUrl":"10.1016/j.wasman.2024.10.021","url":null,"abstract":"<div><div>A field tracer test was carried out in an uncontrolled valley-type landfill. Fluorobenzoic acid (FBA) was firstly used in the landfill to study the preferential flow. A two-dimensional advection–diffusion dual-porosity model coupled with indirect streamline and terrain conditions was developed to analyze the breakthrough curves. The leakage location method was proposed based on the volume proportion of fracture domain in the total domain <em>w<sub>f</sub></em> distribution. The results show that FBA is an excellent tracer due to its lower dosage, high peak concentration and long residence time at monitoring wells. The tracer transport depth and length can reach up to 15 m and 86.3 m, respectively. Diffusion drive the tracer flow to upstream with high velocity. The anisotropy value is mainly influenced by the effect of compression rather than the waste age. The horizontal preferential flows dominate in the landfill. The preferential flow is observed to be more obvious with the increasement of the depth due to the increasement of the content of 2D particles. The leakage probability of different part in the landfill is determined by the proposed dual-porosity model and leakage location method. The proposed leakage detection method can be used for active landfills, especially those with thick layers of wastes. It can also provide scientific guidance for the design of subsequent vertical barrier for the landfills.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 600-612"},"PeriodicalIF":7.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547946","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