Purification of Sewage from Cationic Dyes Modified by Bentonites

Abstract

In the present work the results of the research of natural bentonite which was modified with organo-amine of Dash-Salahly deposit of Azerbaijan were given. Its physical-chemical characteristics were presented. The increase of interplanar space which allows us to use it as a sorbent of some cationic dyes from sewage was established using X-ray structural and IR-spectroscopic analysis. Adsorption of cationic dyes – thionine, methylene violet, brilliant green on bentonite which was modified with organo amine is two times higher than on cation-substituted forms of bentonite. And it shows modified bentonite is more economical and useful for adsorption of cationic dyes.