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首页> 外文期刊>Water Science and Technology >Characterisation of the recalcitrant organic compounds in leachates formed during the anaerobic biodegradation of waste
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Characterisation of the recalcitrant organic compounds in leachates formed during the anaerobic biodegradation of waste

机译：废物厌氧生物降解过程中形成的渗滤液中难降解有机化合物的表征

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摘要

This study investigates the use of UV absorption and fluorescence spectroscopy to assess the earlyndevelopment of recalcitrant organic compounds in leachates formed during the anaerobicnbiodegradation of municipal solid waste. Biochemical methane potential tests were carried out onnfresh waste (FW) and composted waste (CW) over a period of 150 days and leachates produced fromnthe degradation of two wastes were analysed for humic-like (H-L) and fulvic-like (F-L) structures by UVnspectroscopy and fluorescence excitation–emission-matrix analyses. During anaerobicnbiodegradation, the synthesis and utilization of H-L and F-L structures in the leachates over time wasnindicative of the generation of the recalcitrant organic compounds. The results obtained from UVnabsorption and fluorescence spectroscopy suggested that CW leachates resulted in a highernconcentration and more condensed form of recalcitrant H-L and F-L molecules than FW leachates.nThese findings demonstrate how fluorescence and UV absorption spectroscopy can be used as annindicator for monitoring the evolution of recalcitrant organic compounds (H-L and F-L substances)nin leachates formed at different stages of waste biodegradation.
机译：这项研究调查了使用紫外线吸收和荧光光谱法来评估城市固体废物厌氧生物降解过程中形成的渗滤液中难降解有机化合物的早期发展。在150天内对新鲜废物（FW）和堆肥废物（CW）进行了生化甲烷潜力测试，并对两种废物降解产生的渗滤液进行了腐殖质（HL）和黄腐质（FL）结构分析，紫外光谱和荧光激发-发射矩阵分析。在厌氧生物降解过程中，随着时间的推移，渗滤液中H-L和F-L结构的合成和利用指示了顽固有机化合物的产生。从紫外吸收和荧光光谱获得的结果表明，连续波浸出液导致难降解的HL和FL分子的浓度更高，并且冷凝形式比FW浸出液更浓。有机化合物（HL和FL物质）在垃圾生物降解的不同阶段形成浸出液。

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