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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Desorption Kinetic of Vanadium from Polluted Bentonite with CaCl2
Desorption Kinetic of Vanadium from Polluted Bentonite with CaCl2
Author : Xianman Luo, Li Liang, Xi Wei, Xunchi Pu and Yun Deng
CaCl solution(0.1 molúL ) was used as the extractant to desorb vanadium in the polluted 2 bentonite. First-order dynamics equation, Elovich equation, and double-constant equation were employed to describe the desorption process. The desorption amount within 30 min reached 89.5% of the vanadium equilibrium concentration, so the desorptive behavior of vanadium in the polluted bentonite was a rapid reaction. After 120min, the desorption efficiency of vanadium was 51.6% and the reaction reached equilibrium. Double-constant equation was the best model to describe the desorption kinetic of vanadium, Elovich equation was the second , and the worst was first-order dynamics equation. The desorption velocity of vanadium in the polluted bentonite decreases with increasing duration of desorption, and increases with increasing water turbulence.
File Size : 125,692 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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