Reverse osmosis desalination and reclamation : control of colloidal and biofouling

The focus of this thesis work was on the fundamentals of colloidal and biofouling in reverse osmosis (RO) desalination and reclamation. A novel sodium chloride tracer response technique coupled with ultrasonic technique was employed to monitor the progress of fouling by silica colloids, alginic aci...

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Main Author: Chong, Tzyy Haur
Other Authors: Wong Fook Sin
Format: Theses and Dissertations
Language:English
Published: 2008
Subjects:
Online Access:https://hdl.handle.net/10356/12062
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-120622023-03-03T19:14:08Z Reverse osmosis desalination and reclamation : control of colloidal and biofouling Chong, Tzyy Haur Wong Fook Sin Anthony Gordon Fane School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering::Water treatment The focus of this thesis work was on the fundamentals of colloidal and biofouling in reverse osmosis (RO) desalination and reclamation. A novel sodium chloride tracer response technique coupled with ultrasonic technique was employed to monitor the progress of fouling by silica colloids, alginic acid and Pseudomonas fluorescens. This study provided an insight into the interplay between critical flux, concentration polarization or CP (through the enhanced osmotic pressure effect) and fouling. In colloidal fouling, critical flux determined the deposition of particles on the membrane surface. The build up of deposit layer caused an additional hydraulic resistance as well as the cake enhanced osmotic pressure (CEOP) effect, which could be the predominant contributor in the membrane performance loss. Whereas in biofouling, it was postulated that the role of CP was to control the level of nutrient for the growth of biofilm, which in turn caused the biofilm enhanced osmotic pressure (BEOP) phenomenon. Doctor of Philosophy (CEE) 2008-09-25T06:36:04Z 2008-09-25T06:36:04Z 2008 2008 Thesis Chong, T. H. (2008). Reverse osmosis desalination and reclamation : control of colloidal and biofouling. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/12062 10.32657/10356/12062 en Nanyang Technological University 263 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering::Water treatment
spellingShingle DRNTU::Engineering::Environmental engineering::Water treatment
Chong, Tzyy Haur
Reverse osmosis desalination and reclamation : control of colloidal and biofouling
description The focus of this thesis work was on the fundamentals of colloidal and biofouling in reverse osmosis (RO) desalination and reclamation. A novel sodium chloride tracer response technique coupled with ultrasonic technique was employed to monitor the progress of fouling by silica colloids, alginic acid and Pseudomonas fluorescens. This study provided an insight into the interplay between critical flux, concentration polarization or CP (through the enhanced osmotic pressure effect) and fouling. In colloidal fouling, critical flux determined the deposition of particles on the membrane surface. The build up of deposit layer caused an additional hydraulic resistance as well as the cake enhanced osmotic pressure (CEOP) effect, which could be the predominant contributor in the membrane performance loss. Whereas in biofouling, it was postulated that the role of CP was to control the level of nutrient for the growth of biofilm, which in turn caused the biofilm enhanced osmotic pressure (BEOP) phenomenon.
author2 Wong Fook Sin
author_facet Wong Fook Sin
Chong, Tzyy Haur
format Theses and Dissertations
author Chong, Tzyy Haur
author_sort Chong, Tzyy Haur
title Reverse osmosis desalination and reclamation : control of colloidal and biofouling
title_short Reverse osmosis desalination and reclamation : control of colloidal and biofouling
title_full Reverse osmosis desalination and reclamation : control of colloidal and biofouling
title_fullStr Reverse osmosis desalination and reclamation : control of colloidal and biofouling
title_full_unstemmed Reverse osmosis desalination and reclamation : control of colloidal and biofouling
title_sort reverse osmosis desalination and reclamation : control of colloidal and biofouling
publishDate 2008
url https://hdl.handle.net/10356/12062
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