Ghosh Arpita, Kumar Sunil, Das Jit
Indian Institute of Management Sirmaur, Paonta Sahib, 173 025, Himachal Pradesh, India.
College of Sciences and Engineering, University of Tasmania, Launceston Campus, Australia Private Bag 51, Hobart, TAS, 7001, Australia.
J Environ Manage. 2023 Jun 15;336:117708. doi: 10.1016/j.jenvman.2023.117708. Epub 2023 Mar 11.
Globally, a whopping increase in solid waste (SW) generation and the risks posed by climate change are major concerns. A wide spread practice for disposal of municipal solid waste (MSW) is landfill, which swells with population and urbanization. Waste, if treated properly, can be used to produce renewable energy. The recent global event COP 27 mainly stressed on production of renewable energy to achieve the Net Zero target. The MSW landfill is the most significant anthropogenic source of methane (CH) emission. On one side, CH is a greenhouse gas (GHG), and on the other it is a main component of biogas. Wastewater that collects due to rainwater percolation in landfills creates landfill leachate. There is a need to understand global landfill management practices thoroughly for implementation of better practices and policies related to this threat. This study critically reviews recent publications on leachate and landfill gas. The review discusses leachate treatment and landfill gas emissions, focusing on the possible reduction technology of CH emission and its impact on the environment. Mixed leachate will benefit from the combinational therapy method because of its intricate combination. Implementation of circular material management, entrepreneurship ideas, blockchain, machine learning, LCA usage in waste management, and economic benefits from CH production have been emphasized. Bibliometric analysis of 908 articles from the last 37 years revealed that industrialized nations dominate this research domain, with the United States having the highest number of citations.
在全球范围内，固体废物（SW）产生量的大幅增加以及气候变化带来的风险是主要关注点。城市固体废物（MSW）处置的一种广泛做法是填埋，随着人口增长和城市化，填埋量不断增加。如果处理得当，废物可用于生产可再生能源。最近的全球活动COP 27主要强调了生产可再生能源以实现净零目标。城市固体废物填埋场是甲烷（CH）排放的最重要人为来源。一方面，CH是一种温室气体（GHG），另一方面，它是沼气的主要成分。由于雨水在填埋场中渗透而收集的废水会产生填埋场渗滤液。有必要全面了解全球填埋场管理做法，以实施与这一威胁相关的更好做法和政策。本研究对近期关于渗滤液和填埋气的出版物进行了批判性综述。该综述讨论了渗滤液处理和填埋气排放，重点关注CH排放的可能减少技术及其对环境的影响。混合渗滤液因其复杂的成分将受益于联合治疗方法。强调了循环材料管理、创业理念、区块链、机器学习、生命周期评估在废物管理中的应用以及CH生产的经济效益。对过去37年908篇文章的文献计量分析表明，工业化国家在这一研究领域占据主导地位，美国的被引用次数最多。
