Composition of EPS fractions from suspended sludge and biofilm and their roles in microbial cell aggregation
文献类型:期刊论文
作者 | Zhang, Peng1; Fang, Fang1; Chen, You-Peng2; Shen, Yu2; Zhang, Wei2; Yang, Ji-Xiang2; Li, Chun1; Guo, Jin-Song1,2; Liu, Shao-Yang3; Huang, Yang1 |
刊名 | CHEMOSPHERE |
出版日期 | 2014-12-01 |
卷号 | 117页码:59-65 |
ISSN号 | 0045-6535 |
关键词 | Aggregation Biofilm Extracellular Polymeric Substances Raman Suspended Sludge |
DOI | 10.1016/j.chemosphere.2014.05.070 |
英文摘要 | The adhesion and aggregation properties of microbial cell are closely related to extracellular polymeric substances (EPS). In this work, the composition and physicochemical characteristics of EPS in biofilm and suspended sludge (S-sludge) were determined to evaluate their roles in microbial cell aggregation. Raman spectroscopy and three-dimensional fluorescence spectra have been employed to reveal each EPS fraction in different composition. The flocculating capacity of each EPS fraction in the S-sludge shows extraordinary activity, comparing its counterpart in biofilm. Microbial cell surfaces present high hydrophobicity and increased zeta potentials upon EPS extraction. In addition, the respective contribution of EPS to cell aggregating was elucidated. The contribution of combined SEPS and LB-EPS was 23% for S-sludge sample, whereas that was negligible for biofilm sample. The contribution of LB-EPS and TB-EPS were 16% and 30% for S-sludge sample, and -6% and negligible for biofilm sample, respectively. Therefore, EPS promoted the S-sludge cells to aggregate, while in contrast, they showed a negligible or negative effect on the biofilm cells aggregating. (C) 2014 Elsevier Ltd. All rights reserved. |
资助项目 | National Natural Science Foundation of China[51108482] ; National Natural Science Foundation of China[51178484] ; Chongqing Science and Technology Commission - China[cstc2012ggB20002] ; Fundamental Research Funds for the Central Universities[106112012CDJZR215503] |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000347263300010 |
源URL | [http://119.78.100.138/handle/2HOD01W0/1179] |
专题 | 水质生物转化研究中心 科研公共服务平台 |
作者单位 | 1.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm MO, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Troy Univ, Dept Chem & Phys, Troy, AL 36082 USA |
推荐引用方式 GB/T 7714 | Zhang, Peng,Fang, Fang,Chen, You-Peng,et al. Composition of EPS fractions from suspended sludge and biofilm and their roles in microbial cell aggregation[J]. CHEMOSPHERE,2014,117:59-65. |
APA | Zhang, Peng.,Fang, Fang.,Chen, You-Peng.,Shen, Yu.,Zhang, Wei.,...&Yan, Peng.(2014).Composition of EPS fractions from suspended sludge and biofilm and their roles in microbial cell aggregation.CHEMOSPHERE,117,59-65. |
MLA | Zhang, Peng,et al."Composition of EPS fractions from suspended sludge and biofilm and their roles in microbial cell aggregation".CHEMOSPHERE 117(2014):59-65. |
入库方式: OAI收割
来源:重庆绿色智能技术研究院
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