Molecular Insights into the Transformation of Dissolved Organic Matter   in Landfill Leachate Concentrate during Biodegradation and Coagulation   Processes Using ESI FT-ICR MS

doi:10.1021/acs.est.7b02194

CORC > 北京大学 > 环境科学与工程学院

	Molecular Insights into the Transformation of Dissolved Organic Matter in Landfill Leachate Concentrate during Biodegradation and Coagulation Processes Using ESI FT-ICR MS
	Yuan, Ziwen ; He, Chen ; Shi, Quan ; Xu, Chunming ; Li, Zhenshan ; Wang, Chengzhai ; Zhao, Huazhang ; Ni, Jinren
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2017
关键词	RESONANCE MASS-SPECTROMETRY LINEAR ALKYLBENZENE SULFONATES ULTRA-HIGH-RESOLUTION WASTE-WATER TREATMENT PLANTS ANAEROBIC-DIGESTION NANOFILTRATION REMOVAL MARINE SOIL
DOI	10.1021/acs.est.7b02194
英文摘要	Landfill leachate concentrate is a type of refractory organic wastewater with high environmental risk. Identification of refractory components and insights into the molecular transformations of the organics are essential for the development of efficient treatment process. In this report, molecular compositions of dissolved organic matter (DOM) in leachate concentrate, as well as changes after anaerobic/aerobic biodegradation and coagulation with salts, were characterized using electrospray ionization (ESI) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). DOM in leachate concentrate were more saturated and less oxidized with more nitrogen and sulfur-containing substances (accounting for 50.0%), comparing with natural organic matter in Suwannee River. Selectivity for different classes of organics during biodegradation and coagulation processes was observed. Substances with low oxidation degree (O/C < 0.3) were more reactive during biodegradation process, leading to the formation of highly oxidized molecules (O/C > 0.5). Unsaturated (H/C < 1.0) and oxidized (O/C > 0.4) substances containing carboxyl groups were preferentially removed after coagulation with Al or Fe sulfate. The complementary functions of biodegradation and coagulation in the treatment of DOM in leachate concentrate were verified at the molecular level. Lignin-derived compounds and sulfur-containing substances in leachate concentrate were resistant to biodegradation and coagulation treatments. To treat leachate concentrate more effectively, processes aimed at removal of such DOM should be developed.; National Natural Science Foundation of China [91434132, 51578006, 51378020]; Collaborative Innovation Center for Regional Environmental Quality; SCI(E); ARTICLE; 14; 8110-8118; 51
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/472093]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yuan, Ziwen,He, Chen,Shi, Quan,et al. Molecular Insights into the Transformation of Dissolved Organic Matter in Landfill Leachate Concentrate during Biodegradation and Coagulation Processes Using ESI FT-ICR MS[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017.
APA	Yuan, Ziwen.,He, Chen.,Shi, Quan.,Xu, Chunming.,Li, Zhenshan.,...&Ni, Jinren.(2017).Molecular Insights into the Transformation of Dissolved Organic Matter in Landfill Leachate Concentrate during Biodegradation and Coagulation Processes Using ESI FT-ICR MS.ENVIRONMENTAL SCIENCE & TECHNOLOGY.
MLA	Yuan, Ziwen,et al."Molecular Insights into the Transformation of Dissolved Organic Matter in Landfill Leachate Concentrate during Biodegradation and Coagulation Processes Using ESI FT-ICR MS".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017).