Studies on Adsorption and Desorption Performance of acidic Aminodithiocarbamate Functionalized PVC Resin for Hg2+

Chinese Journal of Applied Chemistry ›› 2009, Vol. 26 ›› Issue (10): 1149-1153.

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Studies on Adsorption and Desorption Performance of acidic Aminodithiocarbamate Functionalized PVC Resin for Hg2+

LIU Chun-Ping, JI Chun-Nuan, MENG Yan-Feng, LV Ju-Bo, SUN Lin

(School of Chemistry and Materials Science,Ludong University,Yantai 264025)

Received:2008-10-09 Revised:2008-12-09 Published:2009-10-10 Online:2009-10-10

Abstract

Abstract:

A novel acidic aminodithiocarbamate functionalized PVC resin was synthesized from PVC, triethylenetetramine, CS2 and ClCH2COONa. Its structure was characterized by FTIR spectrum and element analysis. Adsorption properties of the resin for Hg2+ were investigated under different conditions such as pH value, temperature, contact time and the initial concentration of Hg2+. The results showed that the adsorption of the resin for Hg2+could rapidly reach balance and displayed higher capacity when pH was about 2.0. The saturated adsorption capacity of the resin for Hg2+ reached to 3.330 mmol/L at 35℃ and 0.01800mol/L Hg2+. The adsorption process fitted to Langmuir and Freundlich isotherms in the studied concentration range. The loaded resin with Hg2+ was regenerated to efficiency of 99.2% using 0.2mol/L HNO3-10% thiourea.

Key words: Aminodithiocarbamate chelating resin, Adsorption, desorption, Hg2+

CLC Number:

O633113　 O64712

LIU Chun-Ping, JI Chun-Nuan, MENG Yan-Feng, LV Ju-Bo, SUN Lin. Studies on Adsorption and Desorption Performance of acidic Aminodithiocarbamate Functionalized PVC Resin for Hg2+[J]. Chinese Journal of Applied Chemistry, 2009, 26(10): 1149-1153.

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Studies on Adsorption and Desorption Performance of acidic Aminodithiocarbamate Functionalized PVC Resin for Hg2+

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