Study on the Industrial Wastewater Treatment by Modified Bentonite

Abstract:

The natural bentonite as raw material, chitosan as a modifier to prepare chitosan modified bentonite. The use of modified bentonite, each dealing with a high concentration of COD monosodium glutamate (MSG)wastewater and coking wastewater .The optimal conditions: mixing time : 10 ~ 12 min;centrifugation time :25 ~ 30min; PH: 8.5 ~ 9.5; dosage: 10~14g / L. The results showed that the treatment of modified bentonite is better than the bentonite and chitosan. The COD removal rate of MSG wastewater and coking wastewater were 60.1% and 82.3%. So the treatment of coking wastewater is efficiency.. By scanning electron microscopy, surface area and X-ray diffraction analysis shows that modification does not change the basic structure of the bentonite only increased the specific surface area of bentonite, and the adsorption capacity of pollutants.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 323-327
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.323
• Online since: June 2012
• Authors: Hong Shao, Zhi Fang Zhang, Ning Cao
• Keywords: Bentonite, Chemical Oxygen Demand (COD), Chitosan, Coking Wastewater, MSG Wastewater

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