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Citation: XU Hai-Feng, TANG Rui-Ren, CAO Zuo-Ying, LUO Hao, SHEN Yang-Qian. Adsorption Properties of Chitosan Xanthogenate for Copper(Ⅱ)[J]. Chinese Journal of Applied Chemistry, ;2008, 25(6): 673-676. shu

Adsorption Properties of Chitosan Xanthogenate for Copper(Ⅱ)

1.
a School of Chemistry and Chemical Engineering, Central South University, Changsha 410083;
2.
b Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang

Corresponding author: TANG Rui-Ren,
Received Date: 17 June 2007
Available Online: 13 September 2007
Fund Project: 湖南省自然科学基金(06JJ20003)资助项目 (06JJ20003)

Dithiocarbamate-modified chitosan (chitosan xanthogenate,DTC-CTS) was characterized respectively by infrared,UV-Vis and Thermogravimetry.The different adsorbing capacities of DTC-CTS and CTS for Cu²⁺ in aqueous solution were compared.The effects of pH,temperature,time and degree of substitution on the adsorbing capacity were investigated.The results demonstrate that the higher the degree of substitution,the better the adsorbing capacity.The optimum pH range of adsorption of DTC-CTS for Cu²⁺ is 6.0~7.0,the optimum adsorption temperature is 40℃,the optimum adsorption time is 0.5 h.Under such conditions,the adsorbing content of DTC-CTS for Cu²⁺ is 349.5 mg/g,which is 7% more than that of CTS.Adsorbed Cu²⁺ can be quantitatively eluted from DTC-CTS with 10% ammonia at a washing off rate of 96%.DTC-CTS can be used for repeatedly three times.
- chitosan,
- chitosan xanthogenate,
- copper ion,
- adsorption
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