Science Letters:Remediation of Cr(Ⅵ)

Science Letters:Remediation of Cr(Ⅵ) in solution using vitamin C

Abstract： The effectiveness of vitamin C in treating Cr(Ⅵ)-contaminated water is being evaluated. Cr(Ⅵ) is an identified pollutant of some soils and groundwater. Vitamin C, an important biological reductant in humans and animals, can be used to transform Cr(Ⅵ) to essentially nontoxic Cr(Ⅲ). The removal efficiency was 89% when the mass concentration of vitamin C was 80 mg/L in 60 min, and nearly 100% Cr(Ⅵ) was removed when the mass concentration was 100 mg/L. Our data demonstrated that the removal efficiency was affected by vitamin C concentration, the reaction temperature and the dissolved oxygen concentration.The reaction mechanism of Cr(Ⅵ) by vitamin C was presented. Our study opens the way to use vitamin C to remediate Cr(Ⅵ)-contaminated soils and groundwater. 作 者： LIU Yong    XU Xin-hua    HE Ping   作者單位： Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China  期 刊： 浙江大學(xué)學(xué)報(bào)B（英文版）  SCI   Journal： JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE B  年，卷(期)： 2005, 6(6)  分類號(hào)： X703 X131.2  Keywords： Hexalent chromium    Vitamin C    Reduction   

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