NDLI: MICROENCAPSULATION OF TRIOCTYLAMINE IN POLYMERIC MATRICES FOR REMOVING Zn(II) AND Cu(II) FROM CHLORIDE AQUEOUS SOLUTIONS

Content Provider	Scientific Electronic Library Online (SciELO)
Author	FONSECA, C ARANEDA, C YAZDANI-PEDRAM, M BORRMANN, T BASUALTO, C SAPAG, J VALENZUELA, F
Abstract	The microencapsulation of the non-specific basic extractant trioctylamine in polymeric matrices synthesized from styrene and divinylbenzene was studied. The microcapsules were prepared by adding the amine compound during in situ free radical suspension polymerization using benzoyl peroxide as the initiator and using variable proportions of both monomers. SEM analysis shows that the microcapsules have a spherical shape presenting an average surface area of 480 m² g-1 and apore size around 0.5 to 1.8 mu. Synthesis of the microspheres was affected by the amount of extractant used and by the proportionof both monomers during their preparation. The obtained microcapsules were used for the sorptive removal of Zn(II) and Cu(II) ions from chloride aqueous solutions, reaching extraction extents near 90% under the best conditions, following an anion-exchange mechanism between the metallic ions and the extractant immobilized onto the microcapsules. Zn(II) and Cu(II) sorption kinetics experiments were performed and efficient uptake of both Metals within a few minutes was measured. The experimental results were explained using a pseudo-second-order rate kinetics model, which fit the results of chemisorption of both Metals onto the microcapsules well.
Related Links	https://scielo.conicyt.cl/scielo.php?script=sci_abstract&pid=S0717-97072010000300030&lng=en&nrm=iso https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300030&lng=en&nrm=iso
Starting Page	408
Ending Page	414
Page Count	7
File Format	PDF
ISSN	07179707
DOI	10.4067/S0717-97072010000300030
Journal	Journal of the Chilean Chemical Society
Issue Number	3
Volume Number	55
Language	English
Publisher	Sociedad Chilena de Química
Publisher Date	2010-01-01
Publisher Institution	Universidad de Chile Facultad de Ciencias Químicas y Farmacéuticas Laboratorio de Operaciones Unitarias e Hidrometalurgia Universidad de Chile Facultad de Ciencias Químicas y Farmacéuticas Laboratorio Química de Polímeros Victoria University of Wellington School of Chemical and Physical Science
Publisher Place	Chile New Zealand
Access Restriction	Open
Subject Keyword	Microcapsules Trioctylamine Metals Adsorption Wastewater treatment
Content Type	Text
Resource Type	Article
Subject	Chemistry

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