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Citation: TANG Xin-Hu, ZHANG Xiao-Min, ZHOU Ai-Ling. Adsorption of Triethylene-tetramine Cross-linked Chitosan for Heavy Metal Ions[J]. Chinese Journal of Applied Chemistry, ;2008, 25(3): 350-355. shu

Adsorption of Triethylene-tetramine Cross-linked Chitosan for Heavy Metal Ions

1.
Department of Environment & Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330063

Corresponding author: TANG Xin-Hu,
Received Date: 22 March 2007
Available Online: 28 June 2007

The adsorption of Cu²⁺,Ni²⁺,and Cd²⁺ from single,binary,and tertiary solutions onto triethylene-tetramine cross-linked chitosan(CCTS) was studied at pH of 1 to 6 and initial concentration of 1 to 15 mmol/L.It was found that the influence of pH on the amount of adsorption in the pH range of 3~6 was trivial,but the influence of initial concentration ratio on the amount of adsorption was significant in binary and tertiary solutions.In addition,there was no selective adsorption for Cu²⁺,Ni²⁺,and Cd²⁺ onto CCTS in binary and tertiary solutions.The maximum capacities(Q_Cd2+、Q_Cu2+、Q_Ni2+) obtained from single solution(c₀=3.0 mmol/L) were 2.57 mmol/g(pH=5),2.19 mmol/g(pH=6),1.90 mmol/g(pH=6) respectively.
- triethylene-tetramine,
- cross-link,
- chitosan,
- metal ions,
- adsorption
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