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Citation: LIU Chun-Ping, JI Chun-Nuan, MENG Yan-Feng, LV Ju-Bo, SUN Lin. Preparation and Hg²⁺ Adsorption of N-thioacyl Thioglycolic Acid Functionalized Triethylenetetramine Crosslinked PVC Resin[J]. Chinese Journal of Applied Chemistry, ;2009, 26(10): 1149-1153. shu

Preparation and Hg²⁺ Adsorption of N-thioacyl Thioglycolic Acid Functionalized Triethylenetetramine Crosslinked PVC Resin

1.
School of Chemistry and Materials Science, Ludong University, Yantai 264025

Corresponding author: LIU Chun-Ping,
Received Date: 8 October 2008
Available Online: 2 December 2008
Fund Project: 山东省自然科学基金(Y2007B19) (Y2007B19)鲁东大学自然科学基金(20050902)资助项目 (20050902)

A novel acidic N-thioacyl thioglycolic acid functionalized triethylentetramine crosslinked PVC resin was preparated from PVC,triethylenetetramine,CS₂ and ClCH₂COONa and characterized by FTIR and elemental analysis. Adsorption properties of the resin for Hg²⁺ were investigated under different conditions such as pH,temperature,contact time and the initial concentration of Hg²⁺. The results show that the adsorption of the resin for Hg²⁺ could rapidly reach balance,and it displayed a higher capacity when pH was about 2.0. The adsorption capacity of the resin for Hg²⁺ reached 3.330 mmol/g at 35 ℃ and 17.66 mmol/L Hg²⁺. The adsorption process was fitted to Langmuir and Freundlich isotherms in the studied concentration range. The loaded resin with Hg²⁺ was regenerated in an efficiency of 99.2% via 0.2 mol/L HNO₃-10% thiourea.
- N-thioacyl thioglycolic acid,
- PVC chelating resin,
- adsorption,
- desorption,
- Hg²⁺
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Preparation and Hg2+ Adsorption of N-thioacyl Thioglycolic Acid Functionalized Triethylenetetramine Crosslinked PVC Resin

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通讯作者: 陈斌, bchen63@163.com

Preparation and Hg²⁺ Adsorption of N-thioacyl Thioglycolic Acid Functionalized Triethylenetetramine Crosslinked PVC Resin