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Title: Specific membrane transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} ion using K{sup +}-dibenzo-18-crown-6 as carrier

Abstract

Potassium-dibenzo-18-crown-6 complex cation was used as carrier for the uphill transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} complex anion through a chloroform membrane system. By using 0.2 mol/L EDTA as a metal ion acceptor in the receiving phase at the optimized pH of 10.0, the amount of mercury transport through the liquid membrane after 120 minutes was 94.2 {+-} 0.7%. The selectivity and efficiency of mercury transport from aqueous solutions containing equimolar mixtures of Co{sup 2+}, Ni{sup 2+}, Cu{sup 2+}, Zn{sup 2+}, Pb{sup 2+}, and Cd{sup 2+} ions were investigated. in the presence of 0.05 mol/L EDTA at pH 3.2 as a proper masking agent in the source phase, the interfering effects of Zn{sup 2+}, Pb{sup 2+}, and Cu{sup 2+} ions were eliminated.

Authors:
; ;  [1]
  1. Razi Univ., Kermanshah (Iran, Islamic Republic of). Dept. of Chemistry
Publication Date:
OSTI Identifier:
691490
Resource Type:
Journal Article
Journal Name:
Separation Science and Technology
Additional Journal Information:
Journal Volume: 34; Journal Issue: 12; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; MERCURY COMPLEXES; MEMBRANE TRANSPORT; CROWN ETHERS; COBALT; NICKEL; COPPER; ZINC; LEAD; CADMIUM; WASTE WATER; WATER TREATMENT; REMEDIAL ACTION

Citation Formats

Jabbari, A., Chaldavi, H., and Shamsipur, M. Specific membrane transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} ion using K{sup +}-dibenzo-18-crown-6 as carrier. United States: N. p., 1999. Web. doi:10.1081/SS-100100782.
Jabbari, A., Chaldavi, H., & Shamsipur, M. Specific membrane transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} ion using K{sup +}-dibenzo-18-crown-6 as carrier. United States. doi:10.1081/SS-100100782.
Jabbari, A., Chaldavi, H., and Shamsipur, M. Wed . "Specific membrane transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} ion using K{sup +}-dibenzo-18-crown-6 as carrier". United States. doi:10.1081/SS-100100782.
@article{osti_691490,
title = {Specific membrane transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} ion using K{sup +}-dibenzo-18-crown-6 as carrier},
author = {Jabbari, A. and Chaldavi, H. and Shamsipur, M.},
abstractNote = {Potassium-dibenzo-18-crown-6 complex cation was used as carrier for the uphill transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} complex anion through a chloroform membrane system. By using 0.2 mol/L EDTA as a metal ion acceptor in the receiving phase at the optimized pH of 10.0, the amount of mercury transport through the liquid membrane after 120 minutes was 94.2 {+-} 0.7%. The selectivity and efficiency of mercury transport from aqueous solutions containing equimolar mixtures of Co{sup 2+}, Ni{sup 2+}, Cu{sup 2+}, Zn{sup 2+}, Pb{sup 2+}, and Cd{sup 2+} ions were investigated. in the presence of 0.05 mol/L EDTA at pH 3.2 as a proper masking agent in the source phase, the interfering effects of Zn{sup 2+}, Pb{sup 2+}, and Cu{sup 2+} ions were eliminated.},
doi = {10.1081/SS-100100782},
journal = {Separation Science and Technology},
number = 12,
volume = 34,
place = {United States},
year = {1999},
month = {9}
}