Quorum quenching bacteria isolated from industrial wastewater sludge to control membrane biofouling

被引：27

作者：

Noori, Abdolvahed ^{[1
]}

Kim, Hyeok ^{[1
]}

Kim, Myung Hee ^{[2
]}

Kim, Keumyong ^{[2
]}

Lee, Kibaek ^{[3
]}

Oh, Hyun-Suk ^{[1
]}

机构：

[1] Seoul Natl Univ Sci & Technol, Dept Environm Engn, Seoul 01811, South Korea

[2] Samsung Display Co Ltd, Facil Team, Asan 31454, Chungcheongnam, South Korea

[3] Chonnam Natl Univ, Dept Biotechnol & Bioengn, Gwangju 61186, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 352卷

关键词：

Tetramethylammonium hydroxide; Quorum sensing; Quorum quenching; Biofouling; Industrial wastewater; SENSING SIGNAL MOLECULES; TETRAMETHYLAMMONIUM HYDROXIDE; REVERSE-OSMOSIS; BIOREACTORS; IDENTIFICATION; DEGRADATION; TECHNOLOGY; MBRS;

D O I：

10.1016/j.biortech.2022.127077

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

N-acylhomoserine lactone (AHL)-based bacterial communication through quorum sensing (QS) is one of the main causes of biofouling. Although quorum quenching (QQ) has proven to be an effective strategy against biofouling in membrane bioreactors (MBRs) for municipal wastewater treatment, its applicability for industrial wastewater treatment has rarely been studied. This is the first study to isolate QQ strains from the activated sludge used to treat industrial wastewater containing toxic tetramethylammonium hydroxide (TMAH) and 1-methyl-2-pyrrolidinone. The two QQ strains from genus Bacillus (SDC-U1 and SDC-A8) survived and effectively degraded QS signals in the presence of TMAH. They also showed resistance to toxic byproducts of TMAH degradation such as ammonium and formaldehyde. They effectively reduced the biofilm formation of Pseudomonas aeruginosa PAO1 and mixed community of activated sludge. The strains isolated in this study thus have the potential to be employed to reduce membrane biofouling in MBRs during the treatment of TMAH-containing wastewater.

引用

页数：8

共 49 条

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