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https://hdl.handle.net/10356/39502
Title: | Membrane filtration of microalgae | Authors: | We, Sok Ling. | Keywords: | DRNTU::Engineering::Environmental engineering::Water treatment | Issue Date: | 2010 | Abstract: | Membrane filtration is a separation technique commonly applied for the removal of contaminants from liquid. It can also be used for concentrating and harvesting microalgae. When a suitable membrane is used for filtering microalgae, the filtration rate can be adjusted and the debris and algae cells completely retained. The objective of this study is to have a better comprehension about the fouling potential of microalgae on microfiltration membranes under various filtration conditions. The study focuses on the filterability of Chlorella sorokiniana, the selected microalgae. The experiments showed how the transmembrane pressure (TMP), permeability, and total membrane resistance varied with time during the fouling process. The results indicated that fouling led to an increase in TMP with time when the permeate flux was held constant. Simultaneously, permeability decreased, and the total membrane resistance increased. Quantitative data were supplemented with scanning electron microscope visualizations of the algae feed and fouled membranes. The micrographs revealed the characteristics of algal cells before and after filtration, and the surface architecture of deposits on the fouled membrane. It was further observed that filtration caused disruptions and rupturing of some algal cells. Finally, recommendations on the improvement of this study and areas for future investigations are provided. | URI: | http://hdl.handle.net/10356/39502 | Schools: | School of Civil and Environmental Engineering | Rights: | Nanyang Technological University | Fulltext Permission: | restricted | Fulltext Availability: | With Fulltext |
Appears in Collections: | CEE Student Reports (FYP/IA/PA/PI) |
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C_EN34_10.pdf Restricted Access | 1.83 MB | Adobe PDF | View/Open |
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