RESEARCH ARTICLE
Kinetics of Iron (II) Removal from Aqueous Solution Using Activated Dolomite
G.M. Walker*, G. Connor, S.J. Allen
Article Information
Identifiers and Pagination:
Year: 2007Volume: 1
First Page: 23
Last Page: 29
Publisher ID: TOCENGJ-1-23
DOI: 10.2174/1874123100701010023
Article History:
Received Date: 20/06/2007Revision Received Date: 15/08/2007
Acceptance Date: 09/10/2007
Electronic publication date: 29/11/2007
Collection year: 2007
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Experimental investigations were undertaken in batch kinetic systems, for the removal of iron (II) from aqueous solutions using activated dolomite. The effect of the extent dolomite activation on the dissolution of magnesium and calcium from the dolomite lattice was determined. Under optimum experimental conditions there was a direct linear relationship between magnesium dissolution and iron (II) removal from bulk solution. The experimental data were mathematically described using empirical external mass transfer and pseudo-intra-particle diffusion models. The data show conformity with a three stage process, with the iron (II) removal rate showing good correlation with external mass transfer (t < 1 min) and two rates of pseudo-intra-particle diffusion (1 < t < 90mins, and t < 90mins).
