Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/34460
Title: The exploration and fabrication of nanofiltration membranes
Authors: ZHONG PEISHAN
Keywords: aquaporin, biomimetic, nanofiltration, vesicle rupture, water treatment
Issue Date: 30-Apr-2012
Source: ZHONG PEISHAN (2012-04-30). The exploration and fabrication of nanofiltration membranes. ScholarBank@NUS Repository.
Abstract: For the first time, planar biomimetic membranes consisting of Aquaporin Z (AqpZ) were fabricated upon cellulose acetate membrane substrate functionalized with methacrylate end groups. By vesicle rupture of triblock copolymer (ABA) vesicles and UV polymerization, a selective layer upon the substrate for nano-filtration (NF) was formed. The AqpZ:ABA ratio was varied from 1:200 to 1:50 and its effects on nanofiltration performance were elucidated. It is found that the NF membranes comprising AqpZ:ABA ratio of 1:50 can give an impressive water permeability of 34 LMHbar-1 and NaCl rejection of more than 30%. This study opens up new possibilities of using AqpZ embedded biomimetic membranes for water purification with advantages that include high throughput with lesser energy consumption.
URI: http://scholarbank.nus.edu.sg/handle/10635/34460
Appears in Collections:Master's Theses (Open)

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