NIMTE OpenIR  > 2018专题
The effect of membrane surface charges on demulsification and fouling resistance during emulsion separation
Wu, Jindan; Wei, Wei; Li, Shihong; Zhong, Qi; Liu, Fu; Zheng, Jinhuan; Wang, Jiping
2018
Source PublicationJOURNAL OF MEMBRANE SCIENCE
Volume563Pages:126-133
AbstractThe effect of membrane surface charge on demulsification and fouling resistance during emulsion separation is investigated. By grafting poly(2-dimethylaminoethyl methacrylate) (pDMAEMA) and poly(oligo(ethylene glycol) methacrylate) (pOEGMA) onto polypropylene (PP) membrane via ultraviolet (UV)-initiated polymerization, the obtained membranes PP-g-pDMAEMA and PP-g-pOEGMA present positive and negative surface charges in water, respectively. During the emulsion separation, PP-g-pOEGMA and PP-g-pDMAEMA membranes exhibit different separation efficiencies and pollutant resistant behaviors to the emulsions prepared from anionic surfactant (sodium dodecyl sulfate, SDS) and cationic surfactant (cetyltrimethylammonium bromide, CTAB). Comparing to PP-g-pOEGMA, the separation efficiency of PP-g-pDMAEMA was 15% (SDS emulsion) and 300% (CTAB emulsion) higher. But the flux recovery ratio of PP-g-pOEGMA was raised 30% (SDS emulsion) and 16% (CTAB emulsion). Hence, the membrane surface positive charges assist demulsification, but aggravate the membrane fouling. The mechanism obtained is beneficial to construct membranes with high separation efficiency and long-term durability.
KeywordIn-water Emulsions Superoleophilic Nanofibrous Membranes Oil/water Separation Hydrophilic Surfaces Pvdf Membranes Ptfe Membrane Oil Emulsions High-flux Efficient Polyelectrolyte
Subject AreaChemistry ; Science & Technology - Other Topics ; Materials Science
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17170
Collection2018专题
Recommended Citation
GB/T 7714
Wu, Jindan,Wei, Wei,Li, Shihong,et al. The effect of membrane surface charges on demulsification and fouling resistance during emulsion separation[J]. JOURNAL OF MEMBRANE SCIENCE,2018,563:126-133.
APA Wu, Jindan.,Wei, Wei.,Li, Shihong.,Zhong, Qi.,Liu, Fu.,...&Wang, Jiping.(2018).The effect of membrane surface charges on demulsification and fouling resistance during emulsion separation.JOURNAL OF MEMBRANE SCIENCE,563,126-133.
MLA Wu, Jindan,et al."The effect of membrane surface charges on demulsification and fouling resistance during emulsion separation".JOURNAL OF MEMBRANE SCIENCE 563(2018):126-133.
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