Membrane biofouling by chlorine resistant Bacillus spp.: effect of feedwater chlorination on bacteria and membrane biofouling

被引：20

作者：

Bhojani, Gopal ^{[4
]}

Kumar, Sweta Binod ^{[4
]}

Saha, Nirmal Kumar ^{[1
]}

Haldar, Soumya ^{[2
,3
]}

机构：

[1] Cent Salt & Marine Chem Res Inst, CSIR, Membrane Sci & Separat Technol Div, Bhavnagar, Gujarat, India

[2] Cent Salt & Marine Chem Res Inst, CSIR, Analyt & Environm Sci Div, Bhavnagar, Gujarat, India

[3] Cent Salt & Marine Chem Res Inst, CSIR, Centralized Instrument Facil, Bhavnagar, Gujarat, India

[4] Cent Salt & Marine Chem Res Inst, CSIR, Acad Sci & Innovat Res, Bhavnagar, Gujarat, India

来源：

BIOFOULING | 2018年 / 34卷 / 04期

关键词：

Water pretreatment; ultrafiltration; reverse osmosis; membrane fouling; chlorine resistant bacteria; Bacillus; SWRO DESALINATION; FOULED MEMBRANES; WATER; PRETREATMENT; SEAWATER; SCALE; SUBTILIS; PLANT;

D O I：

10.1080/08927014.2018.1461213

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

In this study, bacteria isolated from a lake were characterised for their chlorine resistivity and the effects of chlorination on growth, mortality, protein expression and attachment propensity towards membranes. Biofouling and membrane performance were analysed. All isolated chlorine resistant strains, characterised by 16s rRNA gene sequencing, belonged to the genus Bacillus. Chlorination caused limited effects on bacterial growth and mortality. B. safensis and B. lechinoformis suffered the maximum effects due to chlorination. Live-to-dead ratios immediately after chlorination were above 1.3, with some exceptions. The membrane pure water flux recovery was highly strain dependent. Irreversible membrane fouling was observed with B. aquimaris. Membrane flux decreased substantially during ultrafiltration of water containing chlorine resistant bacteria.

引用

页码：426 / 439

页数：14

共 34 条

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