Cleaning efficacy of hydroxypropyl-beta-cyclodextrin for biofouling reduction on reverse osmosis membranes

被引：16

作者：

Alayande, Abayomi Babatunde ^{[1
]}

Kim, Lan Hee ^{[1
]}

Kim, In S. ^{[1
]}

机构：

[1] GIST, Sch Environm Sci & Engn, GDRC, Gwangju, South Korea

来源：

BIOFOULING | 2016年 / 32卷 / 04期

关键词：

Biofouling; biofilm; hydroxypropyl-beta-cyclodextrin; reverse osmosis membrane; cleaning efficiency; permeate flux; RO MEMBRANES; POLYAMIDE; CHOLESTEROL; EXTRACTION; BACTERIA;

D O I：

10.1080/08927014.2016.1151008

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, an environmentally friendly compound, hydroxypropyl-beta-cyclodextrin (HP-beta-CD) was applied to clean reverse osmosis (RO) membranes fouled by microorganisms. The cleaning with HP-beta-CD removed the biofilm and resulted in a flux recovery ratio (FRR) of 102%. As cleaning efficiency is sometimes difficult to determine using flux recovery data alone, attached bacterial cells and extracellular polymeric substances (EPS) were quantified after cleaning the biofouled membrane with HP-beta-CD. Membrane surface characterization using scanning electron microscopy (SEM), attenuated total reflectance Fourier transform infrared (ATR-FTIR) and atomic force microscopy (AFM) confirmed the effectiveness of HP-beta-CD in removal of biofilm from the RO membrane surface. Finally, a comparative study was performed to investigate the competitiveness of HP-beta-CD with other known cleaning agents such as sodium dodecyl sulfate (SDS), ethylenediaminetetraacetic acid (EDTA), Tween 20, rhamnolipid, nisin, and surfactin. In all cases, HP-beta-CD was superior.

引用

页码：359 / 370

页数：12

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