Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process
Organic fouling is still elusive in seawater reverse osmosis (SWRO) desalination process. Classifying organics in seawater will provide an in-depth understanding of the important fraction on RO fouling. In this study, dissolved organic matter (DOM) in seawater was fractionated and concentrated by me...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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2021
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| Online Access: | https://hdl.handle.net/10356/151705 |
| _version_ | 1826130401041580032 |
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| author | Yin, Wenqiang Li, Xin Suwarno, Stanislaus Raditya Cornelissen, Emile R. Chong, Tzyy Haur |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Yin, Wenqiang Li, Xin Suwarno, Stanislaus Raditya Cornelissen, Emile R. Chong, Tzyy Haur |
| author_sort | Yin, Wenqiang |
| collection | NTU |
| description | Organic fouling is still elusive in seawater reverse osmosis (SWRO) desalination process. Classifying organics in seawater will provide an in-depth understanding of the important fraction on RO fouling. In this study, dissolved organic matter (DOM) in seawater was fractionated and concentrated by membrane technique into three major fractions (i.e., biopolymer fraction, humic substance with building block fraction, and low molecular weight fraction) by their molecular weight (MW) according to the definitions in liquid chromatography with organic carbon detection (LC-OCD) method. Overall recovery of >80% was attained. The isolated organic fractions were compared with common model foulants such as sodium alginate (SA), bovine serum albumin (BSA), and humic acid (HA), in terms of chemical analyses using fluorescence-excitation emission matrix (FEEM) and LC-OCD, as well as their fouling potentials. SWRO fouling experiments were carried out and fouling mechanism was investigated by atomic force microscopy (AFM) method and extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory. Results showed that initial fouling (i.e., foulant-membrane interaction) was the main driver in SWRO organic fouling with biopolymer fraction as the major contributor followed by low molecular weight fraction. In addition, divalent ions was found to enhance the RO fouling by increasing the adhesion and cohesion forces between foulant-membrane and foulant-foulant. |
| first_indexed | 2024-10-01T07:55:52Z |
| format | Journal Article |
| id | ntu-10356/151705 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:55:52Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1517052021-06-24T06:35:00Z Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process Yin, Wenqiang Li, Xin Suwarno, Stanislaus Raditya Cornelissen, Emile R. Chong, Tzyy Haur School of Civil and Environmental Engineering Singapore Membrane Technology Centre Nanyang Environment and Water Research Institute Engineering::Environmental engineering Membrane Fouling Seawater Organic fouling is still elusive in seawater reverse osmosis (SWRO) desalination process. Classifying organics in seawater will provide an in-depth understanding of the important fraction on RO fouling. In this study, dissolved organic matter (DOM) in seawater was fractionated and concentrated by membrane technique into three major fractions (i.e., biopolymer fraction, humic substance with building block fraction, and low molecular weight fraction) by their molecular weight (MW) according to the definitions in liquid chromatography with organic carbon detection (LC-OCD) method. Overall recovery of >80% was attained. The isolated organic fractions were compared with common model foulants such as sodium alginate (SA), bovine serum albumin (BSA), and humic acid (HA), in terms of chemical analyses using fluorescence-excitation emission matrix (FEEM) and LC-OCD, as well as their fouling potentials. SWRO fouling experiments were carried out and fouling mechanism was investigated by atomic force microscopy (AFM) method and extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory. Results showed that initial fouling (i.e., foulant-membrane interaction) was the main driver in SWRO organic fouling with biopolymer fraction as the major contributor followed by low molecular weight fraction. In addition, divalent ions was found to enhance the RO fouling by increasing the adhesion and cohesion forces between foulant-membrane and foulant-foulant. The funding support from the Economic Development Board of Singapore to Singapore Membrane Technology Centre (SMTC) is acknowledged. The authors would like to thank PUB, Singapore's National Water Agency, for access to seawater samples. 2021-06-24T06:35:00Z 2021-06-24T06:35:00Z 2019 Journal Article Yin, W., Li, X., Suwarno, S. R., Cornelissen, E. R. & Chong, T. H. (2019). Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process. Water Research, 159, 385-396. https://dx.doi.org/10.1016/j.watres.2019.05.038 0043-1354 0000-0002-1387-7464 https://hdl.handle.net/10356/151705 10.1016/j.watres.2019.05.038 31121406 2-s2.0-85065772805 159 385 396 en Water Research © 2019 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Membrane Fouling Seawater Yin, Wenqiang Li, Xin Suwarno, Stanislaus Raditya Cornelissen, Emile R. Chong, Tzyy Haur Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process |
| title | Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process |
| title_full | Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process |
| title_fullStr | Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process |
| title_full_unstemmed | Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process |
| title_short | Fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis (RO) desalination process |
| title_sort | fouling behavior of isolated dissolved organic fractions from seawater in reverse osmosis ro desalination process |
| topic | Engineering::Environmental engineering Membrane Fouling Seawater |
| url | https://hdl.handle.net/10356/151705 |
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