2014•Unpublished venueRequires access

Experimental Study on Modified Humic Acid Adsorption Performance to U( VI)

OU Yang-ju

Abstract

The mechanism of adsorption has been discussed by static adsorption experiment. Check the pH,time,and U( Ⅵ) the influence of initial concentration and temperature on adsorption. Results show that the pH value on the absorption effect of modified HA is larger,the modified humic acid adsorption U( Ⅵ) the best pH value is 6,the maximum removal rate was 99. 37%,the adsorption of basic balance within 60 min. UO22 +adsorption on the modified humic acid is exothermic process,accord with the Freundlich isothermal adsorption equation,the correlation coefficient of 0. 99 above. It shows that IHA for uranium adsorption on the surface as the main adsorption,monolayer adsorption is not uniform. 8figs.,9refs.

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Key concepts: Adsorption, Humic acid, Freundlich equation, Chemistry, Isothermal process, Monolayer, Uranium, Exothermic reaction