Quick Removal of chromium (Ⅵ) ions from aqueous solution by chitosan and ferrous ions
In this paper, we have presented a new method to remove Cr (VI) ions from aqueous solution. Chitosan and ferrous ions were added together to the chromium-contained solution, through two-step pH adjust, 0.5 g·l-1 chitosan and 2.0 g·l-1 FeSO4·7H2O could reduce Cr (VI) ions from 100 mg·l-1 to 0.01 mg·l-1. As compared with chitosan and ferrous alone used to remove Cr (VI), for 100 mg·l-1 Cr (VI) solution, the maximum of percentage removal of Cr (VI) by chitosan reached 94.08% when the dosage was up to 3.0 g·l-1 , ferrous ions can remove 99.96% Cr (VI) ions when the dosage was up to 3.0 g·l-1. The experimental results showed that the method of removal Cr (VI) by chitosan cooperated with ferrous ions was of great application prospect due to its high removal rate, quick removal velocity and less sludge volume.
Jing-song Wang Rui-ting Peng Zheng-lei Bao Jin-hui Yang Si-guang Chen Qing Liu
School of Urban Construction, University of South China, Hengyang 421001, P R China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）