Modification of Bentonite and Its Application in Printing and Dyeing Wastewater Treatment

Abstract

Abstract: The treatment effect and influence factors to printing and dyeing wastewater was investigated under different conditions using 10% CTMAB and 20% H₂SO₄ modified bentonite. The experimental results showed that modified bentonite could enhance evidently removal efficiencies of color and COD. Some factors affecting treatment efficiency included absorption time, temperature, pH and bentonite consumption. The adsorption isotherms were described by means of the Langmuir and Freundlich isotherms and the Freundlich model represented the adsorption process better than the Langmuir model.

Key words: bentonite, modification, printing and dyeing wastewater, adsorption isotherm

CLC Number:

X703.1
P619.255

LU Xv-jie, LIU Qiong-yu, LIU Jun-xia. Modification of Bentonite and Its Application in Printing and Dyeing Wastewater Treatment[J]. Journal of Jianghan University(Natural Science Edition), 2011, 39(2): 31-33.

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Modification of Bentonite and Its Application in Printing and Dyeing Wastewater Treatment

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