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Characterization of soluble microbial products in a drinking water biological aerated filter
Kang, Jia1; Ma, Teng-Fei1; Zhang, Peng1; Gao, Xu2; Chen, You-Peng3
2016-05-01
摘要Utilization-associated products (UAPs) and biomass-associated products (BAPs) were quantified separately in this study to characterize soluble microbial products (SMPs) in a drinking water lab-scale biological aerated filter (BAF), and their basic characteristics were explored using gel filtration chromatography and three-dimensional excitation-emission matrix (3D-EEM) spectrophotometry with fluorescence regional integration analysis and parallel factor model. UAPs were observed increased with the increase of filter media depth and accumulated after BAF treatment, whereas BAPs were basically constant. 3D-EEM spectroscopy analysis result showed that tryptophan and protein-like compounds were the main components of UAPs and BAPs, and fulvic-acid-like substance was a major component of BAPs, rather than UAPs. In terms of molecular weight (MW) distribution, UAP MW presented a bimodal distribution in the range of 1-5 and >10 kDa, while BAP MW exhibited unimodal distribution with MW >20 kDa fraction accounting for more than 90 %. The macromolecules of UAPs accumulated after BAF treatment. This study provides theoretical support for in-depth study of SMP characteristics.
关键词Drinking water Biological aerated filter Utilization-associated product Biomass-associated product Soluble microbial products 3D-EEM
DOI10.1007/s11356-015-5973-6
发表期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
卷号23期号:9页码:8721-8730
通讯作者Gao, X (reprint author), Chongqing Water Grp Co Ltd, Chongqing 400045, Peoples R China.
收录类别SCI
WOS记录号WOS:000375412600055
语种英语