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《Non-Metallic Mines》 2006-06
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Study on Absorption of Cr(VI) in Wastewater by Keggin ion Modified Attapulgite Clay

Wang Ping Li Guochang(Dept.of Mater.Sci.& Eng.,Shandong University of Technology,Zibo 255049)  
At the conditions that the pH of the liquor is 4~9,ζpotential of attapulgite clay modified by Keggin ion is positive value,so the modified attapulgite clay has well absorption effect to CrO42-and HCrO4-.The types of absorption are Langmuir isotherm.The saturated amount of a monomolecular layer is 3.59mg/g.The results of XRD analyse indicate that Keggin ions can not lead to obvious change of the attapulgite structure.
【CateGory Index】: X703
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