Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate

In this report, ultrafiltration (UF), nanofiltration (NF 270), nanofiltration with microfiltration (NFMF) membranes were used to investigate the fouling effect of dextrans on dead-end filtration of different media. Dextrans with average molecular weight (MW) of 10K, 100~200K and 200~300K were used t...

Full description

Saved in:
Bibliographic Details
Main Author: Chia, Yan Shan.
Other Authors: Liu Yu
Format: Final Year Project
Language:English
Published: 2010
Subjects:
Online Access:http://hdl.handle.net/10356/39592
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-39592
record_format dspace
spelling sg-ntu-dr.10356-395922023-03-03T16:53:24Z Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate Chia, Yan Shan. Liu Yu School of Civil and Environmental Engineering Singapore Membrane Technology Centre DRNTU::Engineering In this report, ultrafiltration (UF), nanofiltration (NF 270), nanofiltration with microfiltration (NFMF) membranes were used to investigate the fouling effect of dextrans on dead-end filtration of different media. Dextrans with average molecular weight (MW) of 10K, 100~200K and 200~300K were used to simulate polysaccharides in soluble microbial products (SMP). The results showed that a higher concentration of 400ppm of dextran 100-200K solutes resulted in a reduction in water permeability as compared to 200ppm dextran solution. Polyethersulfone (PES) UF membrane was fouled severely by the dextran solutes with poor rejection of dextran solutes below 50% rejection due to adsorptive fouling of the solutes. NFMF exhibited a poorer flux and rejection than NF alone due to the complex interactions between the solutes with the NF and MF membranes. No fouling was observed for NF 270 alone and the highest rejection with permeate quality above 97% was observed at various pressures. Good correlation was shown between rejection by NF 270 and transmembrane pressure (TMP). Bachelor of Engineering (Environmental Engineering) 2010-06-01T03:57:44Z 2010-06-01T03:57:44Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/39592 en Nanyang Technological University 48 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
spellingShingle DRNTU::Engineering
Chia, Yan Shan.
Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
description In this report, ultrafiltration (UF), nanofiltration (NF 270), nanofiltration with microfiltration (NFMF) membranes were used to investigate the fouling effect of dextrans on dead-end filtration of different media. Dextrans with average molecular weight (MW) of 10K, 100~200K and 200~300K were used to simulate polysaccharides in soluble microbial products (SMP). The results showed that a higher concentration of 400ppm of dextran 100-200K solutes resulted in a reduction in water permeability as compared to 200ppm dextran solution. Polyethersulfone (PES) UF membrane was fouled severely by the dextran solutes with poor rejection of dextran solutes below 50% rejection due to adsorptive fouling of the solutes. NFMF exhibited a poorer flux and rejection than NF alone due to the complex interactions between the solutes with the NF and MF membranes. No fouling was observed for NF 270 alone and the highest rejection with permeate quality above 97% was observed at various pressures. Good correlation was shown between rejection by NF 270 and transmembrane pressure (TMP).
author2 Liu Yu
author_facet Liu Yu
Chia, Yan Shan.
format Final Year Project
author Chia, Yan Shan.
author_sort Chia, Yan Shan.
title Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
title_short Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
title_full Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
title_fullStr Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
title_full_unstemmed Investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
title_sort investigation of membrane fouling by soluble microbial product (smp) using dextran as surrogate
publishDate 2010
url http://hdl.handle.net/10356/39592
_version_ 1759856405573009408