Role of transparent exopolymer particles (TEP) in initial bacterial deposition and biofilm formation on reverse osmosis (RO) membrane

Hyunkyung Lee; Chanhyuk Park; Hanshin Kim; Heedeung Park; Seungkwan Hong

doi:10.1016/j.memsci.2015.06.049

Role of transparent exopolymer particles (TEP) in initial bacterial deposition and biofilm formation on reverse osmosis (RO) membrane

Hyunkyung Lee, Chanhyuk Park, Hanshin Kim, Heedeung Park, Seungkwan Hong

Department of Environmental Science & Engineering

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The fouling potential of transparent exopolymer particles (TEP) was evaluated to reveal its role in the biofouling mechanism of reverse osmosis (RO) membrane process. A methodology to determine the fouling potential of TEP was systematically developed based on cake filtration theory. The resulting cake fouling index of TEP (CFI_TEP) was then correlated to initial bacterial deposition observed in RO biofouling tests. Alginic acid was employed to simulate TEP and Pseudomonas aeruginosa PA14 was inoculated for biofouling test. The results showed that the fouling propensity of TEP could be assessed by cake fouling potential of particulate TEP (>0.45μm). Furthermore, the analysis of biofouled RO membranes indicated that bacterial deposition on RO membranes was enhanced significantly with increasing the cake fouling potential of TEP (i.e., CFI_TEP). This work demonstrated the importance of TEP at the initial stage of biofilm formation, suggesting TEP control by pretreatment for mitigating biofouling in RO applications.

Original language	English
Pages (from-to)	25-31
Number of pages	7
Journal	Journal of Membrane Science
Volume	494
DOIs	https://doi.org/10.1016/j.memsci.2015.06.049
State	Published - 5 Nov 2015

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Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

Bacterial deposition
Biofouling
Fouling index
Reverse osmosis (RO) membrane
Transparent exopolymer particles

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10.1016/j.memsci.2015.06.049

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title = "Role of transparent exopolymer particles (TEP) in initial bacterial deposition and biofilm formation on reverse osmosis (RO) membrane",

abstract = "The fouling potential of transparent exopolymer particles (TEP) was evaluated to reveal its role in the biofouling mechanism of reverse osmosis (RO) membrane process. A methodology to determine the fouling potential of TEP was systematically developed based on cake filtration theory. The resulting cake fouling index of TEP (CFITEP) was then correlated to initial bacterial deposition observed in RO biofouling tests. Alginic acid was employed to simulate TEP and Pseudomonas aeruginosa PA14 was inoculated for biofouling test. The results showed that the fouling propensity of TEP could be assessed by cake fouling potential of particulate TEP (>0.45μm). Furthermore, the analysis of biofouled RO membranes indicated that bacterial deposition on RO membranes was enhanced significantly with increasing the cake fouling potential of TEP (i.e., CFITEP). This work demonstrated the importance of TEP at the initial stage of biofilm formation, suggesting TEP control by pretreatment for mitigating biofouling in RO applications.",

keywords = "Bacterial deposition, Biofouling, Fouling index, Reverse osmosis (RO) membrane, Transparent exopolymer particles",

author = "Hyunkyung Lee and Chanhyuk Park and Hanshin Kim and Heedeung Park and Seungkwan Hong",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = nov,

day = "5",

doi = "10.1016/j.memsci.2015.06.049",

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T1 - Role of transparent exopolymer particles (TEP) in initial bacterial deposition and biofilm formation on reverse osmosis (RO) membrane

AU - Lee, Hyunkyung

AU - Park, Chanhyuk

AU - Kim, Hanshin

AU - Park, Heedeung

AU - Hong, Seungkwan

PY - 2015/11/5

Y1 - 2015/11/5

N2 - The fouling potential of transparent exopolymer particles (TEP) was evaluated to reveal its role in the biofouling mechanism of reverse osmosis (RO) membrane process. A methodology to determine the fouling potential of TEP was systematically developed based on cake filtration theory. The resulting cake fouling index of TEP (CFITEP) was then correlated to initial bacterial deposition observed in RO biofouling tests. Alginic acid was employed to simulate TEP and Pseudomonas aeruginosa PA14 was inoculated for biofouling test. The results showed that the fouling propensity of TEP could be assessed by cake fouling potential of particulate TEP (>0.45μm). Furthermore, the analysis of biofouled RO membranes indicated that bacterial deposition on RO membranes was enhanced significantly with increasing the cake fouling potential of TEP (i.e., CFITEP). This work demonstrated the importance of TEP at the initial stage of biofilm formation, suggesting TEP control by pretreatment for mitigating biofouling in RO applications.

AB - The fouling potential of transparent exopolymer particles (TEP) was evaluated to reveal its role in the biofouling mechanism of reverse osmosis (RO) membrane process. A methodology to determine the fouling potential of TEP was systematically developed based on cake filtration theory. The resulting cake fouling index of TEP (CFITEP) was then correlated to initial bacterial deposition observed in RO biofouling tests. Alginic acid was employed to simulate TEP and Pseudomonas aeruginosa PA14 was inoculated for biofouling test. The results showed that the fouling propensity of TEP could be assessed by cake fouling potential of particulate TEP (>0.45μm). Furthermore, the analysis of biofouled RO membranes indicated that bacterial deposition on RO membranes was enhanced significantly with increasing the cake fouling potential of TEP (i.e., CFITEP). This work demonstrated the importance of TEP at the initial stage of biofilm formation, suggesting TEP control by pretreatment for mitigating biofouling in RO applications.

KW - Bacterial deposition

KW - Biofouling

KW - Fouling index

KW - Reverse osmosis (RO) membrane

KW - Transparent exopolymer particles

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DO - 10.1016/j.memsci.2015.06.049

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SN - 0376-7388

VL - 494

SP - 25

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JO - Journal of Membrane Science

JF - Journal of Membrane Science

ER -

Role of transparent exopolymer particles (TEP) in initial bacterial deposition and biofilm formation on reverse osmosis (RO) membrane

Abstract

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Keywords

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