Analysis of raw and pre-treated seawater for potential biofouling precursors

Charlotte Le Lan; Amanda Ellis; Tamar Jamieson; Andrew Blok; deevesh Hemraj; Laetitia Allais; Sergio Balzano; Sophie Leterme

doi:10.1016/j.desal.2015.07.007

Analysis of raw and pre-treated seawater for potential biofouling precursors

Charlotte Le Lan, Amanda Ellis, Tamar Jamieson, Andrew Blok, deevesh Hemraj, Laetitia Allais, Sergio Balzano, Sophie Leterme

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

2 Citations (Scopus)

Abstract

Here, the biofouling precursors of raw and pre-treated seawater from a reverse osmosis (RO) feed tank were investigated using a lab-scale RO cross-flow system. The microbial communities, nutrients and TEP present in both source waters were analyzed using flow cytometry, light microscopy, flow cell injection and colorimetry. All biofilms formed were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and colorimetry. Evaluation of both seawater sources showed (1) low nutrient levels and a high N/P ratio known to provoke a higher TEP production by microbes, (2) the presence of microbes known to be involved in biofouling and transparent exopolymer particles (TEPs) production and (3) a high concentration of TEP known to provoke membrane biofouling.

Original language	English
Pages (from-to)	71-78
Number of pages	8
Journal	Desalination
Volume	373
Early online date	2015
DOIs	https://doi.org/10.1016/j.desal.2015.07.007
Publication status	Published - 1 Oct 2015

Keywords

Biofilm
Cross-flow
Marine microbes
Reverse osmosis membranes
Transparent exopolymeric particles

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10.1016/j.desal.2015.07.007

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title = "Analysis of raw and pre-treated seawater for potential biofouling precursors",

abstract = "Here, the biofouling precursors of raw and pre-treated seawater from a reverse osmosis (RO) feed tank were investigated using a lab-scale RO cross-flow system. The microbial communities, nutrients and TEP present in both source waters were analyzed using flow cytometry, light microscopy, flow cell injection and colorimetry. All biofilms formed were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and colorimetry. Evaluation of both seawater sources showed (1) low nutrient levels and a high N/P ratio known to provoke a higher TEP production by microbes, (2) the presence of microbes known to be involved in biofouling and transparent exopolymer particles (TEPs) production and (3) a high concentration of TEP known to provoke membrane biofouling.",

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T1 - Analysis of raw and pre-treated seawater for potential biofouling precursors

AU - Le Lan, Charlotte

AU - Ellis, Amanda

AU - Jamieson, Tamar

AU - Blok, Andrew

AU - Hemraj, deevesh

AU - Allais, Laetitia

AU - Balzano, Sergio

AU - Leterme, Sophie

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Here, the biofouling precursors of raw and pre-treated seawater from a reverse osmosis (RO) feed tank were investigated using a lab-scale RO cross-flow system. The microbial communities, nutrients and TEP present in both source waters were analyzed using flow cytometry, light microscopy, flow cell injection and colorimetry. All biofilms formed were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and colorimetry. Evaluation of both seawater sources showed (1) low nutrient levels and a high N/P ratio known to provoke a higher TEP production by microbes, (2) the presence of microbes known to be involved in biofouling and transparent exopolymer particles (TEPs) production and (3) a high concentration of TEP known to provoke membrane biofouling.

AB - Here, the biofouling precursors of raw and pre-treated seawater from a reverse osmosis (RO) feed tank were investigated using a lab-scale RO cross-flow system. The microbial communities, nutrients and TEP present in both source waters were analyzed using flow cytometry, light microscopy, flow cell injection and colorimetry. All biofilms formed were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and colorimetry. Evaluation of both seawater sources showed (1) low nutrient levels and a high N/P ratio known to provoke a higher TEP production by microbes, (2) the presence of microbes known to be involved in biofouling and transparent exopolymer particles (TEPs) production and (3) a high concentration of TEP known to provoke membrane biofouling.

KW - Biofilm

KW - Cross-flow

KW - Marine microbes

KW - Reverse osmosis membranes

KW - Transparent exopolymeric particles

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DO - 10.1016/j.desal.2015.07.007

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VL - 373

SP - 71

EP - 78

JO - Desalination

JF - Desalination

ER -

Analysis of raw and pre-treated seawater for potential biofouling precursors

Abstract

Keywords

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