Predominant mechanisms for the removal of nickel metal ion from aqueous solution using cement kiln dust

Abd Ali, ZT, Naji, LA, Almuktar, SAAAN, Faisal, AAH, Abed, SN, Scholz, M ORCID: https://orcid.org/0000-0001-8919-3838, Naushad, M and Ahamad, T 2020, 'Predominant mechanisms for the removal of nickel metal ion from aqueous solution using cement kiln dust' , Journal of Water Process Engineering, 33 .

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Abstract

The experimental methodology achieved in the present study signified that the adsorption and precipitation were mainly mechanisms occurred together in the removal of nickel from aqueous solutions by sorption using cement kiln dust (CKD) byproduct as sorbent. Finding the contribution of each mechanism in the removal process and derivation an analytical model for finding the portion of precipitation were the focal points of this work. Results proved that the pure precipitation was increased with the increase of CKD dosage and metal concentration where total removal (adsorption-precipitation) ranged from 45 to 100%. The SEM micrographs of the CKD sorbent before and after sorption process certified that there was a crystal precipitates on the surface of the CKD. Also, these graphs in combination with FT-IR tests proved that [Ni(OH2)n]+2 (n=4-6) species were bonded with CKD and insoluble hydroxide species may be precipitated onto the CaO surfaces by co-precipitation, while K-O, Si-O and Ca-O groups enhanced the adsorption mechanism.

Item Type:	Article
Schools:	Schools > School of Computing, Science and Engineering
Journal or Publication Title:	Journal of Water Process Engineering
ISSN:	2214-7144
Related URLs:	Publication
Funders:	Researchers Supporting Project, King Saud University, Riyadh, Saudi Arabia
Depositing User:	USIR Admin
Date Deposited:	13 Nov 2019 08:54
Last Modified:	29 Jan 2020 14:23
URI:	http://usir.salford.ac.uk/id/eprint/53022

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