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Development of antifouling thin-film-composite membranes for seawater desalination
The present contribution provides detailed information about the development of antifouling novel TFC (thin-film-composite) membranes for mostly water purification with special emphasis on seawater desalination in particular. The novel membranes were prepared by incorporating iLSMMs (in-situ hydrophilic surface modifying macromolecules) into the TFC membranes, rendering the surface of the TFC membranes significantly more hydrophilic. The prepared membranes were then subjected to long term fouling studies using model foulants, including SH (sodium humate), SPs (silica particles), and CF (chloroform) spiked in the feed NaCl solution. The biofouling effect of silver salts was also studied by incorporating some silver salts (SCH (silver citrate hydrate); SL (silver lactate); and SN (silver nitrate) simultaneously with iLSMM into the TFC membranes. Halo test was conducted with Escherichia coli to examine the antibiofouling performance of the silver incorporated TFC membranes. It can be concluded by this work that iLSMM incorporated TFC membranes have performed excellently for the desalination of salty water (3.5 wt% NaCl), especially when the solution was spiked with typical foulants such as SH, SPs, and CF. The flux reduction was reduced significantly when iLSMM was incorporated in the TFC membranes by a newly developed technique. The antimicrobial fouling intensity of the studied membrane was in the order of: SN (ring width 0.55 mm) > SL (0.27mm) > SCH (0.19 mm).
Development of antifouling thin-film-composite membranes for seawater desalination
The present contribution provides detailed information about the development of antifouling novel TFC (thin-film-composite) membranes for mostly water purification with special emphasis on seawater desalination in particular. The novel membranes were prepared by incorporating iLSMMs (in-situ hydrophilic surface modifying macromolecules) into the TFC membranes, rendering the surface of the TFC membranes significantly more hydrophilic. The prepared membranes were then subjected to long term fouling studies using model foulants, including SH (sodium humate), SPs (silica particles), and CF (chloroform) spiked in the feed NaCl solution. The biofouling effect of silver salts was also studied by incorporating some silver salts (SCH (silver citrate hydrate); SL (silver lactate); and SN (silver nitrate) simultaneously with iLSMM into the TFC membranes. Halo test was conducted with Escherichia coli to examine the antibiofouling performance of the silver incorporated TFC membranes. It can be concluded by this work that iLSMM incorporated TFC membranes have performed excellently for the desalination of salty water (3.5 wt% NaCl), especially when the solution was spiked with typical foulants such as SH, SPs, and CF. The flux reduction was reduced significantly when iLSMM was incorporated in the TFC membranes by a newly developed technique. The antimicrobial fouling intensity of the studied membrane was in the order of: SN (ring width 0.55 mm) > SL (0.27mm) > SCH (0.19 mm).
Development of antifouling thin-film-composite membranes for seawater desalination
Rana, Dipak (author) / Kim, Yekyung (author) / Matsuura, Takeshi (author) / Arafat, Hassan A. (author)
Journal of Membrane Science ; 367 ; 110-118
2011
9 Seiten, 8 Bilder, 4 Tabellen, 43 Quellen
Article (Journal)
English
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