Hydrophobic Nano-Silica/Isobutylene-Isoprene Rubber Cryogels as Efficient and Reusable Sorbents for Oil Spills and Organic Liquids

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In this paper, a new kind of nano-silica embedded cryogel was prepared by solution crosslinking isobutylene-isoprene rubber with silica in benzene at various temperatures. The characteristics of cryogels were manifested by SEM. Sorption tests showed that the cryogels were efficient at removing kinds of oil, aromatic compound and alkane. The results suggested that the maximum sorption capacity was 15.44 g.g-1 for crude oil, 15.62 g.g-1 for diesel and 13.16 g.g-1 for lubricating oil, respectively. Moreover, the cryogels were reusable once they were centrifuged, leading to continuous sorption capacity for these oils. Therefore, the cryogel might be a promising removal material which can be used in large-scale oil or toxic organic liquids spills.

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1368-1371

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February 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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