| Remediation of Cr(VI) in solution using vitamin C |
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| 作者姓名： | 刘永 徐新华 何平 |
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| 作者单位： | Department of Environmental Engineering，Zhejiang University，Hangzhou 310027，China，Department of Environmental Engineering，Zhejiang University，Hangzhou 310027，China，Department of Environmental Engineering，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | Project (No. 20407015) supported by the National Natural ScienceFoundation of China |
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| 摘 要： | INTRODUCTION Chromium is a commonly identified soils andgroundwater contaminant. Cr(VI) is toxic, carcino-genic, and has great subsurface mobility. In contrast,Cr(III) is relatively non-toxic and immobile. Muchresearch focused on the remediation of Cr(VI) such asadsorption by zeolites (Bowman, 2003) or silicas(Hideaki et al., 2002), chemical reduction by ferrousiron (Buerge and Hug, 1999; Fendorf and Li, 1996) orzero-valent iron (Powell and Puls, 1997; Alowitz andScherer, 2002), b…
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Remediation of Cr(VI) in solution using vitamin C |
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| LIU Yong,XU Xin-hua,HE Ping.Remediation of Cr(VI) in solution using vitamin C[J].Journal of Zhejiang University Science,2005(6). |
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| Authors: | LIU Yong XU Xin-hua HE Ping |
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| 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. |
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| Keywords: | Hexalent chromium Vitamin C Reduction |
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