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Enhancement of chlorine resistance in carbon nanotube-based nanocomposite reverse osmosis membranes

Authors
Park, JunwooChoi, WansukKim, Sung HyunChun, Byung HeeBang, JoonaLee, Ki Bong
Issue Date
3월-2010
Publisher
DESALINATION PUBL
Keywords
Desalination; Reverse osmosis membrane; Nanocomposite membrane; Multi-walled carbon nanotube; Chlorine resistance
Citation
DESALINATION AND WATER TREATMENT, v.15, no.1-3, pp.198 - 204
Indexed
SCIE
SCOPUS
Journal Title
DESALINATION AND WATER TREATMENT
Volume
15
Number
1-3
Start Page
198
End Page
204
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/116881
DOI
10.5004/dwt.2010.1686
ISSN
1944-3994
Abstract
Aromatic polyamide membranes, which are prepared by interfacial polymerization of m-phenylene diamine (MPDA) in water solution and trimesoyl chloride (TMC) in organic solution, have been widely used as reverse osmosis (RO) membranes for desalination of seawater. However, it has been pointed out that polyamide RO membranes have weak resistance to chlorine, causing deteriorated separation performance. In this study, nanocomposite RO membranes containing multi-walled carbon nanotube (MWCNT) were developed to enhance the chlorine resistance of polyamide membranes. The resulting membranes were analyzed and tested to see the desalination performance. Nonionic surfactant (Triton-X-100) was used in the interfacial polymerization of organic/inorganic nanocomposite RO membranes to improve the dispersion of MWCNTs in the polymer matrix. Scanning electron microscopy (SEM) images and X-ray diffraction (XRD) spectra confirmed that MWCNTs were uniformly distributed in the polymer matrix. When 0.1-1 wt% of MWCNTs were added to polyamide RO membranes, chlorine resistance was measurably improved compared to the conventional polyamide membranes.
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공과대학 (화공생명공학과)
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