文献类型：期刊文献

英文题名：The biofilm property and its correlationship with high-molecular-weight polyacrylamide degradation in a water injection pipeline of Daqing oilfield

作者：Li, Cai-Yun[1,2];Zhang, Dong[3];Li, Xiao-Xiao[1,2];Mbadinga, Serge Maurice[1,2];Yang, Shi-Zhong[1,2];Liu, Jin-Feng[1,2];Gu, Ji-Dong[4];Mu, Bo-Zhong[1,2,5]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Appl Chem, Shanghai 200237, Peoples R China;[3]PetroChina, Daqing Oilfield Ltd Co, Oil Prod Co 4, Daqing 163511, Heilongjiang, Peoples R China;[4]Univ Hong Kong, Sch Biol Sci, Hong Kong, Hong Kong, Peoples R China;[5]Shanghai Collaborat Innovat Ctr Biomfg Technol, Shanghai 200237, Peoples R China

年份：2016

卷号：304

起止页码：388

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20154701564815);WOS:【SCI-EXPANDED(收录号:WOS:000367699200043)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 41273084) and the 863 Program (Grant No. 2013AA064403).

语种：英文

外文关键词：Biofilm; Microbial diversity; EPS; Polyacrylamide; Biodegradation

摘要：Biofilms increase dragging force for liquid transportation, cause power consumption, and result in equipment corrosion in polymer-flooding oilfields. To reveal the responsible microorganisms for biofilm formation and stability of high-molecular-weight polyacrylamide (PAM), a biofilm, developed on the sieve of a piston plunger pump in a water transport and injection pipeline with partial hydrolyzed polyacrylamide (HPAM) in Daqing Oilfield, was collected and analyzed by molecular microbiology, chemical and physical methods. Diverse bacterial groups (11 families) were detected in the biofilm, including Pseudomonadaceae, Rhodocyclaceae, Desulfobulbaceae, Alcaligenaceae, Comamonadaceae, Oxalobacteraceae, Bacteriovoracaceae, Campylobacteraceae, Flavobacteriaceae, CIostridiales Incertae Sedis XIII and Moraxellaceae. Three archaeal orders of methanogens including Methanomicrobiales, Methanosarcinales and Thermoplasmatales were also detected separately. HPAM was degraded into lower molecular weight polymers and organic fragments with its amide groups hydrolyzed into carboxylic groups by the microorganisms. The microenvironment of the biofilm contained diverse bacterial and archaeal communities, correlating with the extracellular polymeric substance (EPS) and I-IPAM biodegradation. The results are helpful to provide information for biofilm control in oil fields. (C) 2015 Published by Elsevier B.V.