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《Industrial Water Treatment》 2012-12
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Experimental study on the treatment of Cr~(6+) in electroplating wastewater by aluminum pillared modified bentonite

Zhou Zhongkui1,Xu Shaohui2(1.Institute of Water Resources and Environmental Engineering,East China Institute of Technology,Fuzhou 344000,China;2.Colloid Environmental Technologies Co.,Suzhou 215126,China)  
Bentonite has been used as raw material for the preparation of aluminum pillared modified bentonite.The effects of different influencing factors on the Cr6+ removing rate from electroplating wastewater with aluminum pillared modified bentonite are studied.The results show that the Cr6+ removing rate from electroplating wastewater with the aluminum pillared modified bentonite is significantly better than that with the original bentonite.The factors,such as wastewater pH,adsorption time and bentonite dosage have greater effect on the Cr6+ removing rate.The Cr6+ removing rate by aluminum pillared modified bentonite reaches the highest,86.1%,in the case of pH=4,adsorption time 40 min,and dosage 40 g/L.The adsorption of Cr6+ in the electroplating wastewater by aluminum pillared modified bentonite conforms to Langmuir adsorption isotherm equation.
【Fund】: 国家自然科学基金资助项目(40861017);; 江西省自然科学基金资助项目(20114BAB203029);; 江西省教育厅科技计划资助项目(GJJ09261)
【CateGory Index】: X781.1
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