Removal of anionic pollutants from groundwaters using Alamine 336: chemical equilibrium modelling

This work reports the study of the chemical equilibrium of the extraction of chromium(VI) anions from groundwaters where other anionic species are present, mainly sulfate and chloride anions, using Alamine 336 as extractant. The analysis was performed working with two different systems: (i) a binary...

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Published in:Journal of chemical technology and biotechnology (1986) 2006-11, Vol.81 (11), p.1829-1835
Main Authors: Bringas, Eugenio, San Román, M Fresnedo, Ortiz, Inmaculada
Format: Article
Language:English
Subjects:
anionic pollutants
Applied sciences
Chemical engineering
emulsion pertraction
Exact sciences and technology
extraction equilibrium
Groundwaters
Natural water pollution
Pollution
tertiary amines
Water treatment and pollution
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description This work reports the study of the chemical equilibrium of the extraction of chromium(VI) anions from groundwaters where other anionic species are present, mainly sulfate and chloride anions, using Alamine 336 as extractant. The analysis was performed working with two different systems: (i) a binary system (sulfate and chloride anions) and, (ii) a tertiary system (chromium, sulfate and chloride anions) with a composition of 9.6–15.4 mol Cr6+ m−3, 5.2–16.7 mol SO42− m−3 and 4.2–13.5 mol Cl− m−3 respectively. A careful experimental design was performed and the data were correlated to the mathematical models obtaining the equilibrium parameters of the extraction reactions in both systems. Copyright © 2006 Society of Chemical Industry
doi_str_mv 10.1002/jctb.1610
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source Wiley-Blackwell Read & Publish Collection
subjects anionic pollutants
Applied sciences
Chemical engineering
emulsion pertraction
Exact sciences and technology
extraction equilibrium
Groundwaters
Natural water pollution
Pollution
tertiary amines
Water treatment and pollution
title Removal of anionic pollutants from groundwaters using Alamine 336: chemical equilibrium modelling
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