Surface modification of PVDF membrane by radiation-induced graft polymerization for novel membrane bioreactor

[Display omitted] •PVDF membrane was successfully modified by radiation induced graft polymerization.•Roughness of membranes was decreased with GMA concentration.•Physical characteristics of modified membrane were influenced by GMA concentration.•Modified membrane exhibited higher ammonia mass flux...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2017, 46(0), , pp.103-110
Main Authors: Shin, In Hwan, Hong, Seungkwan, Lim, Seung Joo, Son, Youn-Suk, Kim, Tak-Hyun
Format: Article
Language:English
Subjects:
Ion-exchange membrane bioreactor
Membrane modification
Nitrogen removal
PVDF membrane
Radiation grafting
화학공학
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Summary:[Display omitted] •PVDF membrane was successfully modified by radiation induced graft polymerization.•Roughness of membranes was decreased with GMA concentration.•Physical characteristics of modified membrane were influenced by GMA concentration.•Modified membrane exhibited higher ammonia mass flux than that of CEM. PVDF (poly vinylidene fluoride) membrane was modified with glycidyl methacrylate (GMA) and sodium sulfite using a radiation-induced graft polymerization technique for unique ammonia removal process. Ion exchange capacities (IECs) of unmodified PVDF membrane, modified PVDF membrane and commercial cation exchange membrane (CEM) were investigated. The IEC value increased as the concentration of GMA increased. Batch experiments were carried out to evaluate the ion transport via the modified membrane. The mass flux of ammonia via the CEM and modified membrane at the initial ammonia concentration of 2000mg/L were 1.16mg-NH4+/m2s and 2.89mg-NH4+/m2s, respectively.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2016.10.020