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B（英文版）  SCI   Journal： JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE B  年，卷(期)： 2005, 6(6)  分類號： X703 X131.2  Keywords： Hexalent chromium    Vitamin C    Reduction   

【Science Letters:Remediation of Cr(Ⅵ)】相關(guān)文章：

模板Science Teacher Resume03-13

The Art of Love Letters 寫情書的藝術(shù)05-04

介紹信(Letters of Introduction)寫作05-04

When do we Use Capital Letters?05-04

apply Letters求職信范文（精選14篇）08-23

My favorite subject is science 新目標教案及同步練習(xí)04-24

九年級Unit 4 Amazing Science教案04-25

辦公英語：介紹信 Letters 0f Introduction05-04

人教版新課標高一必修3 Unit 4 Astronomy The Science of the Star--教案104-24

人教版新課標高一必修3 Unit 4 Astronomy The Science of the Star--教案學(xué)案04-24