Title : ( Improvement of antibiofouling performance of a reverse osmosis membrane through biocide release and adhesion resistance )
Authors: Hamed Karkhanechi , Fachrul Razi , Isao Sawada , Ryosuke Takagi , Yoshikage Ohmukai , Hideto Matsuyama ,
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Abstract
To improve antibiofouling properties, a commercial reverse osmosis (RO) membrane was modified by surface deposition of a polyelectrolyte multilayers (PEMs) embedded with silver nanoparticles. The modified membrane was further coated with an amphiphilic polyzwitterion, a 2-methacryloyloxyethyl phosphorylcholine (MPC) copolymer with 2-aminoethyl methacrylate (AEMA). Thus, the modified surface layer consisted of PEMs embedded with silver nanoparticles and polyzwitterion as a top layer. Embedding of silver nanoparticles and polyzwitterion coating were confirmed by transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). The effectiveness of biocide release from the modified membranes was evaluated with Pseudomonas putida (P. putida) and Escherichia coli (E. coli) and the anti-adhesion property was studied using P. putida. The silver nanoparticles embedded within PEMs showed biocidal property because of silver ion release, and polyzwitterion at the top layer showed high anti-adhesion properties because of the high hydrophilicity of surface. Thus, the membrane modified by PEMs embedded with silver nanoparticles and polyzwitterion as a top layer showed a high antibiofouling properties, attributed to the combined effect of biocide release and adhesion resistance.
Keywords
RO membrane; Antibiofouling; Silver nanoparticles; Polyzwitterion
@article{paperid:1072357,
author = {Karkhanechi, Hamed and Fachrul Razi and Isao Sawada and Ryosuke Takagi and Yoshikage Ohmukai and Hideto Matsuyama},
title = {Improvement of antibiofouling performance of a reverse osmosis membrane through biocide release and adhesion resistance},
journal = {Separation and Purification Technology},
year = {2013},
volume = {105},
number = {1},
month = {February},
issn = {1383-5866},
pages = {106--113},
numpages = {7},
keywords = {RO membrane; Antibiofouling; Silver nanoparticles; Polyzwitterion},
}
%0 Journal Article
%T Improvement of antibiofouling performance of a reverse osmosis membrane through biocide release and adhesion resistance
%A Karkhanechi, Hamed
%A Fachrul Razi
%A Isao Sawada
%A Ryosuke Takagi
%A Yoshikage Ohmukai
%A Hideto Matsuyama
%J Separation and Purification Technology
%@ 1383-5866
%D 2013
