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Chinese Journal of Applied Ecology ›› 2004, Vol. ›› Issue (1): 116-118.

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Removal of red tide organisms by organo-modified bentonite

DENG Yuesong1, XU Zirong2, XIA Meisheng2, YE Ying2, HU Caihong2   

  1. Feed Science Institute of Zhejiang University, Hangzhou 310029, China
  • Received:2002-05-04 Revised:2003-01-13 Online:2004-01-15

Abstract: A series of organo-bentonites were synthesized by exchanging cation surfactants such as cyltrimethylammonium bromide and cetyltrimethylammonium to remove red tide organisms Skeletonema costatum.The results showed that the removal rate of Skeletonema costatum by the bentonites was in the order of cyltrimethylammonium surfactant modified iron pillared bentonite>cetyltrimethylammoium surfactant modified iron pillared bentonite>iron pillared bentonite>cyltrimethylammonium surfactant modified sodium bentonite>cetyltrimethylammoium surfactant modified>sodium bentonite. The removal rate of Skeletonema costatum was related to the length of alkyl chains and the amount of cation surfactants exchanged on bentonites.

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