Waste management最新文献_第9页

A pilot scale test on the fluidized melting combustion of coal gasification fine slag 煤气化细渣流化熔融燃烧中试规模试验。

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.2024.10.026

Shuai Guo , Chen Liang , Zhiyong Chen , Wei Li , Qiangqiang Ren

{"title":"A pilot scale test on the fluidized melting combustion of coal gasification fine slag","authors":"Shuai Guo , Chen Liang , Zhiyong Chen , Wei Li , Qiangqiang Ren","doi":"10.1016/j.wasman.2024.10.026","DOIUrl":"10.1016/j.wasman.2024.10.026","url":null,"abstract":"<div><div>To address the issue of coal gasification fine slag (CGFS) disposal, a novel fluidized melting combustion (FMC) process has been proposed. In this study, the operating feasibility, combustion performance and gas pollutant emission were assessed through 0.4 MW pilot-scale test. The results indicated that both temperature and pressure fluctuation remained within the controllable range throughout entire test period. Under the influence of high cycle rate and incomplete combustion, CGFS efficiently achieved the rapid dehydration, preheating and crushing. Some combustible H<sub>2</sub> and CO were generated simultaneously. After the preheating modification, the refractory CGFS transformed into hot gas–solid composite fuel. To achieve the complete carbon removal and ash vitrification, the melting combustion temperature was up to 1501.1 °C. Under the excessively high temperature, liquid slag was discharged smoothly from the tap hole without any observed blockage. Carbon content in slag was only 0.4 wt%. The slag captured rate and decarbonization rate were up to 79.0 % and 93.8 %, respectively. The initial CO emission was as low as 103.0 mg/m<sup>3</sup>. The initial NO emission reached up to 452.5 mg/m<sup>3</sup> under radiation boiler afterburning. Due to the combined influence of multiple factors, the initial SO<sub>2</sub> emission soared up to 1789.3 mg/m<sup>3</sup>. Further research will focus on controlling flue gas pollutant emissions, resource utilization of molten slag, and developing oxy-combustion. The objective is to attain full carbon neutrality in the entire coal chemical industry process.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 593-599"},"PeriodicalIF":7.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547926","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

Biodegradable plastics – Where to throw? A life cycle assessment of waste collection and management pathways in Austria 生物降解塑料--扔向何处？奥地利废物收集和管理途径的生命周期评估。

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.2024.10.018

Namrata Mhaddolkar , Concetta Lodato , Alexia Tischberger-Aldrian , Daniel Vollprecht , Thomas Fruergaard Astrup

{"title":"Biodegradable plastics – Where to throw? A life cycle assessment of waste collection and management pathways in Austria","authors":"Namrata Mhaddolkar , Concetta Lodato , Alexia Tischberger-Aldrian , Daniel Vollprecht , Thomas Fruergaard Astrup","doi":"10.1016/j.wasman.2024.10.018","DOIUrl":"10.1016/j.wasman.2024.10.018","url":null,"abstract":"<div><div>The current waste management systems are struggling to optimally handle biodegradable plastics (BDPs) and are facing numerous challenges; one of which is the consumer confusion about how to best source-segregate BDPs. Based on an environmental life-cycle assessment, this study investigated the consequences of collecting BDPs in one of three waste streams (packaging waste, biowaste, and residual waste) in Austria. Collecting BDPs as (i) packaging waste resulted in incineration (SP1) or mechanical recycling (SP2), (ii) biowaste resulted in composting (SB1) or anaerobic digestion (AD) (SB2), and (iii) residual waste in incineration (SR1). SP2 performed best in most of the 16 investigated impact categories (ICs). Three scenario analyses demonstrated that (i) utilisation of BDPs as an alternative fuel for process heat substitution yielded more environmental benefits than incineration in SP1 and SP2, (ii) adding a material recovery facility (MRF) with AD increased the environmental load for SB2, while (iii) the energy scenario with zero electricity imports plus heat from biomass performed best for most alternative pathways across the 16 ICs. Eight technology parameters (out of 97) were identified as most relevant for the results based on data quality, sensitivity ratio, and analytical uncertainty; they were related to waste incineration, MRF, recycling facility, compost- and AD processes. Overall, mechanical recycling emerged as the most favourable option which is aligned with the waste-hierarchy mentioned in the European Union Waste Framework Directive. However, effective mechanical recycling of BDPs requires (i) a ‘sufficient’ waste amount, (ii) a market for recyclates, and (iii) relevant mechanical recycling infrastructure.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 578-592"},"PeriodicalIF":7.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547927","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

Resource recovery potential of incineration bottom ash fine fraction 焚烧底灰细粒的资源回收潜力。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-28 DOI: 10.1016/j.wasman.2024.10.020

Michal Šyc , Jakub Výravský , Héctor Muñiz Sierra , Ekaterina Korotenko , Petra Kameníková

{"title":"Resource recovery potential of incineration bottom ash fine fraction","authors":"Michal Šyc , Jakub Výravský , Héctor Muñiz Sierra , Ekaterina Korotenko , Petra Kameníková","doi":"10.1016/j.wasman.2024.10.020","DOIUrl":"10.1016/j.wasman.2024.10.020","url":null,"abstract":"<div><div>The paper provides a summary of findings regarding the composition of the fine fraction of incineration bottom ash. While the recovery of metals is common practice for particles larger than 2 mm, it has been less common for finer particles, despite them constituting 30–40 % of the overall bottom ash mass flow. Detailed knowledge of the material composition of this fraction is essential for successful metal recovery. The study utilizes a TIMA electron microscope, originally designed for the mining industry, to analyze the bottom ash. The microscope allows for the identification of chemical speciation and was used to obtain detailed information about particles containing copper (Cu), aluminum (Al), iron (Fe), zinc (Zn), and gold (Au) in the fine fraction below 2,000 µm. Results revealed that metallic aluminum accounts for approximately 15 % of the overall aluminum content, with Al grains often coated by a thin layer of Al<sub>2</sub>O<sub>3</sub>. Metallic Cu and its alloys make up around 60 % of the copper content, while another 30 % is in the form of Cu oxides. In contrast, there is minimal presence of metallic Fe and Zn in the fine fraction. All metallic Au was bound to a single particle, corresponding to an Au content of 4 mg/kg in the bulk sample. The implications of these results are also discussed in relation to particle size distribution and liberation, as these factors play a vital role in the recovery process.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 569-577"},"PeriodicalIF":7.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142523155","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

Recovery of aluminum, magnetic ferrous metals and glass through enhanced industrial-scale treatment of different MSWI bottom ashes 通过加强对不同 MSWI 底灰的工业规模处理，回收铝、磁性黑色金属和玻璃。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-28 DOI: 10.1016/j.wasman.2024.10.025

Julia Mühl, Simon Hofer, Dominik Blasenbauer, Jakob Lederer

{"title":"Recovery of aluminum, magnetic ferrous metals and glass through enhanced industrial-scale treatment of different MSWI bottom ashes","authors":"Julia Mühl, Simon Hofer, Dominik Blasenbauer, Jakob Lederer","doi":"10.1016/j.wasman.2024.10.025","DOIUrl":"10.1016/j.wasman.2024.10.025","url":null,"abstract":"<div><div>To foster a circular economy, the EU will increase recycling targets for packaging materials, including aluminum, ferrous metals and glass. Recovery of packaging metals from incineration bottom ashes (IBA) from municipal solid waste incineration can contribute to achieving these targets. Nevertheless, recoverable metal and glass amounts from IBA, and in particular IBA from fluidized bed combustion, are rarely investigated. Therefore, this work aims to assess the recoverable amounts of aluminum, magnetic ferrous metals and glass > 4 mm from different types of IBA through enhanced treatment. In an industrial-scale treatment experiment with one batch of IBA from grate and one from fluidized bed combustion, masses and compositions of all output flows of the treatment plant were determined. Material flow analysis was used to study the distribution of the investigated materials during the treatment process. Results show that glass separation was not feasible for the grate IBA, which only contained 7 % glass > 4 mm. The fluidized bed IBA contained 42 % glass > 4 mm, of which 72 % were recovered. More aluminum and magnetic ferrous metals > 4 mm were found in the fluidized bed IBA, also exhibiting less mineral agglomeration compared to those from grate IBA. The study demonstrated that enhanced industrial IBA treatment can recover > 95 % of aluminum and magnetic ferrous metals > 4 mm, not observing significant differences between these metals. Thus, a cutting-edge IBA treatment can enable the recovery of recyclable material from IBA and therefore contribute to a circular economy. Furthermore, fluidized bed IBA shows advantages regarding its recycling options compared to grate IBA.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 557-568"},"PeriodicalIF":7.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142523254","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

Meta-analysis of ecological and phylogenetic biomass maturity metrics 生态和系统发育生物量成熟度指标的元分析。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-25 DOI: 10.1016/j.wasman.2024.10.023

Minori Uchimiya , Christopher M. DeRito , Joseph L. Sevigny , Anthony G. Hay

{"title":"Meta-analysis of ecological and phylogenetic biomass maturity metrics","authors":"Minori Uchimiya , Christopher M. DeRito , Joseph L. Sevigny , Anthony G. Hay","doi":"10.1016/j.wasman.2024.10.023","DOIUrl":"10.1016/j.wasman.2024.10.023","url":null,"abstract":"<div><div>Although a wide variety of biomass sources have been subjected to 16S rRNA gene sequencing, ecological and phylogenetic signatures of maturity have not been identified quantitatively. In this meta-analysis we reanalyzed data from the only published study with publicly available 16S and temperature data (Zhou et al., 2018), and then applied the Zhou results to 705 samples from 13 additional studies. Using the Zhou data, we found that Faith’s alpha diversity index correlated inversely with compost temperature and positively with maturity. We also noted a dramatic shift in the ratios of Bacilliota to Acidobacteriota, Planctomycetota, and Pseudomonadota, as samples cooled below 44 °C (p < 0.001). A negative correlation between Bacillota and Pseudomonadota was also observed in all 705 samples that included compost, sugarcane mill mud, anerobic digestates, and vermicompost. Even in the absence of temperature data for the majority of samples, our meta-analysis shows that microbiomes of diverse residuals converged on similar communities that resemble those of soil, regardless of the starting material or residual management process. We propose that approximately < 0.4 log(Bacillota:Pseudomonadota) and > 43 Faith’s phylogenetic diversity indices are indicative of maturity of diverse biomass materials destined for land application.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 548-556"},"PeriodicalIF":7.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509357","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

Exploring mechanical properties and long-term environmental impact of ceramsites derived from diverse solid wastes 探索从各种固体废物中提取的陶瓷的机械性能和长期环境影响。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-24 DOI: 10.1016/j.wasman.2024.10.012

Yunjie Wan, Xinyu Wu, Houhu Zhang, Yueqing Xu, Chengyan Li, Yifan Xu

{"title":"Exploring mechanical properties and long-term environmental impact of ceramsites derived from diverse solid wastes","authors":"Yunjie Wan, Xinyu Wu, Houhu Zhang, Yueqing Xu, Chengyan Li, Yifan Xu","doi":"10.1016/j.wasman.2024.10.012","DOIUrl":"10.1016/j.wasman.2024.10.012","url":null,"abstract":"<div><div>The escalating global issue of soil pollution by heavy metals, particularly incinerated municipal solid waste fly ash (IMSWFA), necessitates effective remediation strategies. The prevailing approach for safely disposing and utilization of IMSWFA involves high-temperature sintering. In this work, we propose a cost-effective method to produce ceramsites by utilizing IMSWFA, municipal sludge (MS), contaminated soil (CS), and iron tail slag (ITS). After conducting a comprehensive analysis and comparison of outcomes obtained from orthogonal experiments and single-factor experiments, it was determined that the optimal preparation conditions for achieving desirable results are preheating at a temperature of 400 °C for 15 min followed by sintering at a temperature of 1150 °C for 10 min. The optimal ratio of raw materials for ceramsites is 15 % IMSWFA, 15 % MS, 58 % CS, and 12 % ITS. The ceramsites, prepared in accordance with the specified process and raw material ratio, exhibit remarkable properties including robust stability, minimal water absorption, reduced weight, and elevated cylindrical compressive strength. The ceramsites demonstrate an exceptionally high heavy metal loss ratio ranging from 91 % to 100 %, while exhibiting significantly lower leaching quantities of these metals compared to the raw materials. Additionally, aging tests of ceramsites were performed under UV light and acid/alkaline etching to simulate the real-world environment. This work can be utilized to investigate the long-term environmental impact of ceramsites derived from municipal solid waste (MSW), thereby making a valuable contribution to the advancement of solid waste management technology.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 538-547"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509356","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

Occurrence and efficient removal of PFAS from landfill leachates using on-site DTRO systems: A comprehensive analysis across 11 Chinese cities 利用现场 DTRO 系统从垃圾填埋场渗滤液中发现并有效去除 PFAS：对中国 11 个城市的综合分析。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-24 DOI: 10.1016/j.wasman.2024.10.017

Rushun Wang , Yan Lin , Nemin Luo , Tao Zhang , Walter Lamparter , Bin Yan , Zhengjun Dong

{"title":"Occurrence and efficient removal of PFAS from landfill leachates using on-site DTRO systems: A comprehensive analysis across 11 Chinese cities","authors":"Rushun Wang , Yan Lin , Nemin Luo , Tao Zhang , Walter Lamparter , Bin Yan , Zhengjun Dong","doi":"10.1016/j.wasman.2024.10.017","DOIUrl":"10.1016/j.wasman.2024.10.017","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS), known for their persistent toxicity and mobility, pose significant environmental and human health risks. Here we explored the occurrence and efficacy of on-site Double-Pass Reverse Osmosis (DTRO) systems in removing 30 different PFAS from landfill leachates in 11 diverse cities across China. PFAS concentrations in landfill leachate ranged from 938 to 32,491 ng/L, averaging 6,486 ng/L, predominantly comprising short-chain PFAS, notably perfluorobutane sulfonate (PFBS). Notable emerging substitutes like 6:2 fluorotelomer sulfonate, fluorobutane sulfonamide, and 9-chlorohexadecafluoro-3-oxanone sulfonate were also identified. The PFAS levels correlated positively (r<sup>2</sup> = 0.79, p < 0.01) with regional economic development, with coastal areas exhibiting higher concentrations than inland regions. The DTRO membrane filtration and ion exchange resin achieved an average removal efficiency of 94 % for ∑<sub>30</sub>PFAS and even 99.97 % for PFBS (the concentration of PFBS in the raw leachate ranged from 226.36 ng/L to 27,935.61 ng/L, with an average concentration of 4,506.88 ng/L). The Na ion exchange resin had a limited effect on further reducing the PFAS concentration. Our findings not only contribute to the theoretical understanding of PFAS behavior in landfill leachates but also offer a practical engineering applications for global waste management practices.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 511-519"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509335","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

Analysis of household waste production in Ecuador: Limitations for sustainable management in local communities 厄瓜多尔家庭废物生产分析：当地社区可持续管理的局限性。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-24 DOI: 10.1016/j.wasman.2024.10.016

Mercedes Villa-Achupallas , Ana López , Rubén Díez-Montero , Ana Lorena Esteban-García , Amaya Lobo

{"title":"Analysis of household waste production in Ecuador: Limitations for sustainable management in local communities","authors":"Mercedes Villa-Achupallas , Ana López , Rubén Díez-Montero , Ana Lorena Esteban-García , Amaya Lobo","doi":"10.1016/j.wasman.2024.10.016","DOIUrl":"10.1016/j.wasman.2024.10.016","url":null,"abstract":"<div><div>Municipal solid waste management is one of the greatest challenges for environmental sustainability and well-being in developing countries, where the infrastructure and financial resources required to carry out such services are often lacking. The design of solutions that adequately respond to local needs must be based on quality information about the quantity and composition of the generated waste and current management practices. This study evaluated domestic waste generation and its management in 81 communities in Ecuador based on sampling at the source and population surveys. An average household waste generation value of 0.613 kg/cap/d was obtained, of which biowaste accounted for 68 % of the total generation, followed by 23 % recyclable material and 9 % other non recyclable waste. Even though some councils have set up differentiated collection systems for inorganic material in urban areas, these systems are still absent in many rural areas, which explains why waste is not separated in 70 % of the studied communities. Furthermore, only 70 % of the rural population in the country has a waste collection service, and waste in some communities is still thrown into water bodies or burned. Rural populations often use biowaste at home by composting it or as animal feed, which are good practices that should be considered in the diagnosis reports and incorporated into waste management planning.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 531-537"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509353","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

Deep learning approaches for classification of copper-containing metal scrap in recycling processes 利用深度学习方法对回收过程中的含铜金属废料进行分类。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-24 DOI: 10.1016/j.wasman.2024.10.022

G. Koinig , N. Kuhn , T. Fink , B. Lorber , Y. Radmann , W. Martinelli , A. Tischberger-Aldrian

{"title":"Deep learning approaches for classification of copper-containing metal scrap in recycling processes","authors":"G. Koinig , N. Kuhn , T. Fink , B. Lorber , Y. Radmann , W. Martinelli , A. Tischberger-Aldrian","doi":"10.1016/j.wasman.2024.10.022","DOIUrl":"10.1016/j.wasman.2024.10.022","url":null,"abstract":"<div><div>Separating copper from iron scrap is a critical operation in metal recycling and achieving this with low cost sensoric equipment like RGB cameras instead of XRF/XRT is becoming increasingly attractive. In this article, the groundwork for creating an image classification model to separate copper from iron scrap has been performed. Twenty of the most common and most easily available CNN architectures were trained on 2200 metal scrap specimens and evaluated inline on a sensor-based sorting rig for their prediction accuracy and their inference latency to mimic real circumstances in an industrial setting. Out of these evaluated architectures, DenseNet-201 with 98% accuracy in inline tests is recommended if potent hardware is available. Otherwise AlexNet with 92% accuracy or MobileNet-V2 with 90% accuracy are recommended for further investigation and model creation if hardware restrictions apply. Based on the presented results in this article, the initial cumbersome surveyance of the most suitable network architecture can be substantially reduced and the creation of a sorting model can be streamlined. This article thus provides the basis for creating an inline applicable sorting method for scrap metal that uses low cost sensorics equipment and can provide reasonably high accuracy in its prediction.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 520-530"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509354","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

Do compost-based landfill biocover systems designed for methane oxidation emit nitrous oxide in significant amounts? 为甲烷氧化而设计的堆肥型垃圾填埋场生物覆盖系统是否会大量排放一氧化二氮？

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2024-10-23 DOI: 10.1016/j.wasman.2024.10.009

Peter Kjeldsen, Konstantinos Kissas, Charlotte Scheutz

{"title":"Do compost-based landfill biocover systems designed for methane oxidation emit nitrous oxide in significant amounts?","authors":"Peter Kjeldsen, Konstantinos Kissas, Charlotte Scheutz","doi":"10.1016/j.wasman.2024.10.009","DOIUrl":"10.1016/j.wasman.2024.10.009","url":null,"abstract":"<div><div>Landfills constitute a significant source of methane (CH<sub>4</sub>), thereby contributing to climate change. CH<sub>4</sub> emissions from old and smaller landfills can be mitigated by compost-based biocover systems designed for optimal microbial CH<sub>4</sub> oxidation. It is well-known that the strong greenhouse gas nitrous oxide (N<sub>2</sub>O) is generated during the composting process, which potentially could continue after incorporating compost into the biocover system. Field studies were performed at three full-scale biocover systems established at Danish landfills and included surface screenings, surface flux measurements and gas composition analysis. To assess if N<sub>2</sub>O generated in the biofilter-compost material would hamper the climate benefit from CH<sub>4</sub> oxidised in a biofilter, CH<sub>4</sub> removed was compared to N<sub>2</sub>O generated, with both calculated in CO<sub>2</sub>-eq. Two assessments were performed. The first considered individual measurement locations on the biocover, whereas the second considered the overall performance of the biocover. By comparing CH<sub>4</sub> oxidation rates to the emitted N<sub>2</sub>O, both approaches showed that there is no risk that N<sub>2</sub>O emission will negatively affect the CH<sub>4</sub> mitigation efficiency of compost-based biocover systems established at landfills. The ratio of N<sub>2</sub>O emitted to CH<sub>4</sub> oxidized (both in unit kg CO<sub>2</sub>-eq per day) was less than 2.3% for both approaches, and in most cases below 1%.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"190 ","pages":"Pages 506-510"},"PeriodicalIF":7.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509355","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