Extraction and separation of heavy metalions by using poly (Hydroxamic Acid) chelating resin

G.Kubaneswary Gengaraju (2007) Extraction and separation of heavy metalions by using poly (Hydroxamic Acid) chelating resin. Universiti Malaysia Sabah. (Unpublished)


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Poly(hydroxamic acid) (PHA) chelating resin was synthesized utilizing poly(methylacrylate) (PMA) grafted sago. The PMA grafted copolymer was obtained by free radical initiating process where eerie ammonium nitrate was used as an initiator. Ester group of PMA were converted to hydroxamic acid groups by treatment of hydroxylamine under alkaline solution. The PHA resin was characterized using FTIR spectra to determine the functional groups of the ligand. The prepared resin was used to separate heavy metal pairs (Cu-Cd, Cu-Zn, Zn-Cr and Cu-Cr). The separation was done by column technique with HCI as an eluent. It is found that Zn and Cd ions were eluted using 0.001M, 0.01 and 0.1M HCI. Whereas, Cu ion was eluted with 0.lM and 0.5M HCI. Finally Cr ion was eluted with 0.5M and 1.0M HCI. The selectivity of the resin toward the metal ions used was in the following order: Cr³�> Cu²�> Zn²�> Cd²�. The rate of exchange of copper, cadmium and chromium ion was rapid where the t½6, 5 and 4 min, respectively and the swelling of the resin was 40.382 g water g�¹.

Item Type: Academic Exercise
Uncontrolled Keywords: Poly(hydroxamic acid), ammonium nitrate, chelating resin, column technique, HCI
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Date Deposited: 08 Jan 2014 02:49
Last Modified: 10 Oct 2017 08:02
URI: http://eprints.ums.edu.my/id/eprint/7974

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