Field of Research: Analytical Chemistry
Name of author) (s): Lina Odeh, Imad Odeh, Mustafa Khamis, Mahmoud Khatib, Mohannad Qurie,
Ziad Shakhsher and Mutaz Qutob
Title of published work: “Hexavalent Chromium Removal and Reduction to Cr (III) by Polystyrene Tris(2-aminoethyl)amine”
Name of Journal: American Journal of Analytical Chemistry
Year: 2015
Volume: 6
Pages: 26-37
Publisher: Published online . http://dx.doi.org/10.4236/ajac.2015.61003
Abstract:
A commercially available chelating polymer, polystyrene tris(2-aminoethyl)amine, was used for the removal of chromium from aqueous solution. The influence of pH, contact time, adsorbent dosage and initial Cr (VI) concentration on adsorption was studied. The optimum pH for the removal of Cr (VI) was at pH 5, while optimum contact time and adsorbent dosage were 120 minutes and 10 g/L, respectively. Total chromium and Cr (VI) concentrations were analyzed by ICP-MS and UVVisible. Adsorption isotherms using Langmuir and Freundlich isotherm models revealed that the data fitted Langmuir isotherm model better than Freundlich with a maximum adsorption capacity of 312.27 mg/g. FTIR spectroscopy, Scanning electron microscopy (SEM) and Energy Dispersive Spectrometry (EDS) analyses were performed on the adsorbent before and after binding Cr (VI). All analyses confirmed the complexation of Cr (VI) to the adsorbent. Desorption experiments using KCl solution indicated 89.3% release of chromium, rendering this method of high potential for adsorbent regeneration.
Contact info of the contact author (s):
Name: Imad Odeh, PhD.
Address: Department of Chemistry and Chemical Technology, Al-Quds University
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
