Algaecide Activity of Organic Clay Mineral Modified by Bis-QAC

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Abstract:

A new organic clay mineral(O-MMT) was synthesized by using montmorillonite(Na-MMT) and bis-type quaternary ammonium compound, 1,5-(pentamethylene) bis (N,N`-diethyl dodecyl acetate ammonium bromide) [PDA] and its CEC, hydrophobicity and algaecide activities were investigated. Results showed that contact angle of Na-MMT and O-MMT are 45.3° and 138.0°, and their CEC are 1.02 and 1.43 mmol•g-1, respectively. O-MMT had 98.5% average algal survival rate against Microcytis, Anabaena, Chlorella and Chlamydomonas at the optimal algaecide conditions, 48h treatment time and 1.0 g•L-1 dosage, which is far higher than 48% of Na-MMT.

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642-645

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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