垃圾填埋场厌氧渗滤液中6:2氟端聚物醇的归宿：对垃圾填埋场逸散性排放的影响

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2025-05-05 DOI:10.1016/j.envpol.2025.126375

Qian Wang , Tao Zhang , Xuemei Liu , Shuo Liu , Xinyue Wang , Xiaoming Wang

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引用次数: 0

摘要

虽然6:2氟端粒醇（6:2 FTOH）是垃圾渗滤液中常见的化合物，但其厌氧生物转化和分配仍然知之甚少。研究了垃圾渗滤液微生物中6:2 FTOH的厌氧生物转化和分配。实验结束时，初始6:2的FTOH中有19.4 mol%分解为气相。因此，厌氧渗滤液可能是半挥发性6:2 FTOH进入垃圾填埋气或进入大气的重要途径。6:2 FTOH在渗滤液中的厌氧生物转化符合一级双指数降解模型，半衰期为12 d。6:2氟端粒羧酸（6:2 FTCA）是主要的生物转化产物，占8mol %。此外，微生物群落组成表明，假单胞菌属、DMER64属和Fastidiosipila属可能参与了6:2 FTOH的生物转化。本研究阐明了生物转化过程对垃圾渗滤液中6:2 FTOH的分配和环境命运的潜在意义。

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The fate of 6:2 fluorotelomer alcohol in anaerobic landfill leachate: Implication for fugitive emission from waste landfills

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The fate of 6:2 fluorotelomer alcohol in anaerobic landfill leachate: Implication for fugitive emission from waste landfills

Although 6:2 fluorotelomer alcohol (6:2 FTOH) is a common compound in landfill leachate, its anaerobic biotransformation and partitioning remain poorly understood. This study investigated the anaerobic biotransformation and partitioning of 6:2 FTOH in landfill leachate microcosms. At the end of the experiment, 19.4 mol% of the initial 6:2 FTOH partitioned into the gas phase. Therefore, anaerobic leachate could represent a significant pathway for semi-volatile 6:2 FTOH to the landfill gas or enter the atmosphere. The anaerobic biotransformation of 6:2 FTOH in leachate conformed to the first-order bi-exponential degradation model and the half-life was 12 days. The 6:2 fluorotelomer carboxylic acid (6:2 FTCA) was the main biotransformation product, accounting for 8 mol%. Moreover, microbial community composition showed the genus of Pseudomonas, DMER64, and Fastidiosipila may play a role in the biotransformation of 6:2 FTOH. This study elucidates the potential significance of biotransformation processes on both the partitioning and environmental fate of 6:2 FTOH within landfill leachate.

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.