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Title: Extraction of copper(II)-NTA chelated anions from water with Aliquat 336

Abstract

Streams containing metals and complexing agents, which are often encountered in industrial and environmental applications, are not easily treated using conventional chemical precipitation processes. A solvent extraction method is thus proposed in this work. The distribution ratios of Cu(II) between kerosene solutions of Aliquat 336 (tri-n-octylmethylammonium chloride) and the water-containing complexing agent NTA (nitrilotriacetic acid) were measured. Experiments were carried out as a function of aqueous pH, the concentration of amine, and temperature. It is shown that the distribution ratios first increased with increasing pH and then decreased with a further increase in pH. The enthalpy of the extraction was determined. Finally, the nonideal behavior of the organic phase is discussed.

Authors:
;  [1]
  1. Yuan Ze Univ., Chung-Li (Taiwan, Province of China). Dept. of Chemical Engineering
Publication Date:
OSTI Identifier:
691489
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; COPPER; SOLVENT EXTRACTION; CHELATING AGENTS; WASTE WATER; WATER TREATMENT; DISTRIBUTION; METAL INDUSTRY

Citation Formats

Juang, R.S., and Huang, I.P. Extraction of copper(II)-NTA chelated anions from water with Aliquat 336. United States: N. p., 1999. Web. doi:10.1081/SS-100100781.
Juang, R.S., & Huang, I.P. Extraction of copper(II)-NTA chelated anions from water with Aliquat 336. United States. doi:10.1081/SS-100100781.
Juang, R.S., and Huang, I.P. Wed . "Extraction of copper(II)-NTA chelated anions from water with Aliquat 336". United States. doi:10.1081/SS-100100781.
@article{osti_691489,
title = {Extraction of copper(II)-NTA chelated anions from water with Aliquat 336},
author = {Juang, R.S. and Huang, I.P.},
abstractNote = {Streams containing metals and complexing agents, which are often encountered in industrial and environmental applications, are not easily treated using conventional chemical precipitation processes. A solvent extraction method is thus proposed in this work. The distribution ratios of Cu(II) between kerosene solutions of Aliquat 336 (tri-n-octylmethylammonium chloride) and the water-containing complexing agent NTA (nitrilotriacetic acid) were measured. Experiments were carried out as a function of aqueous pH, the concentration of amine, and temperature. It is shown that the distribution ratios first increased with increasing pH and then decreased with a further increase in pH. The enthalpy of the extraction was determined. Finally, the nonideal behavior of the organic phase is discussed.},
doi = {10.1081/SS-100100781},
journal = {Separation Science and Technology},
number = 12,
volume = 34,
place = {United States},
year = {1999},
month = {9}
}