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《Chinese Journal of Environmental Engineering》 2012-01
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Desorption of chromium(Ⅵ) from Mg-Al hydrotalcite-like compounds

Zang Yunbo1 Hou Wanguo2(1.Chemistry Department,Shangqiu Normal College,Shangqiu 476000,China; 2.Key Laboratory for Colloid and Interface Chemistry of Education Ministry,Shandong University,Jinan 250100,China)  
Desorption of Cr(Ⅵ) from Mg-Al hydrotalcite-like compounds(HTlc) was studied with different desorption agents.The effects of electrolyte concentrations,pH,time and the varieties of desorption agents on the desorption performance were investigated.It was found that the time for desorption equilibrium was longer than that for sorption equilibrium.Different desorption agents had various desorption capacities.For one desorption agent,the desorption amount increased with the increase of concentrations.Furthermore,the increases of pH values can enhance the desorption amounts in general.
【Fund】: 国家“973”重大基础研究计划项目(2004CB418504);; 国家自然科学基金资助项目(20573065);; 河南省教育厅自然科学研究计划项目(2010B150021)
【CateGory Index】: X703
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