Comparison of fouling indices in assessing pre-treatment for seawater reverse osmosis
Article
Article Title | Comparison of fouling indices in assessing pre-treatment for seawater reverse osmosis |
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ERA Journal ID | 41476 |
Article Category | Article |
Authors | Chinu, Korshed (Author), Vigneswaran, Saravanamuth (Author), Erdei, Laszlo (Author), Shon, Hokyong K. (Author), Kandasamy, Jaya (Author) and Ngo, H. H. (Author) |
Journal Title | Desalination and Water Treatment |
Journal Citation | 18 (1-3), pp. 187-191 |
Number of Pages | 5 |
Year | 2010 |
Publisher | Desalination Publications |
Place of Publication | United States |
ISSN | 1944-3986 |
1944-3994 | |
Digital Object Identifier (DOI) | https://doi.org/10.5004/dwt.2010.1769 |
Web Address (URL) | https://www.tandfonline.com/doi/abs/10.5004/dwt.2010.1769 |
Abstract | In this study, different processes such as flocculation with ferric chloride (FeCl3) and deep bed filtration (sand filtration and dual media filtration) as a pre-treatment were used for seawater desalination. The performance of these pre-treatments was determined in terms of silt density index (SDI) and modified fouling index by using microfilter (MF-MFI), ultrafilter (UF-MFI), and nanofilter (NF-MFI) membrane. MFI and SDI indicated that deep bed filtration with in-line flocculation was better pre-treatment than flocculation alone as colloidal particles are removed after this pretreatment. UF-MFI and NF-MFI indicated that these pretreatment cannot remove dissolved organic matter as the fouling reduction was smaller. Detailed molecular weight distribution (MWD) of seawater organic matter was examined after different pretreatments. MWD of the initial seawater mainly ranged from 1510 Da to 130 Da. Deep bed filtration with in-line flocculation removed relatively large molecular weight of organic matter (1510-1180 Da), while the small molecular weights (less than 530 Da) were not removed. |
Keywords | fouling index; pre-treatment; reverse osmosis; seawater desalination |
ANZSRC Field of Research 2020 | 400411. Water treatment processes |
400499. Chemical engineering not elsewhere classified | |
400513. Water resources engineering | |
Public Notes | There are no files associated with this item. |
Byline Affiliations | University of Technology Sydney |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0v57/comparison-of-fouling-indices-in-assessing-pre-treatment-for-seawater-reverse-osmosis
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