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

Abd Ali, Ziad T. ; Naji, Laith A. ; Almuktar, Suhad A.A.A.N. ; Faisal, Ayad A.H. ; Abed, Suhail N. ; Scholz, Miklas LU ; Naushad, Mu and Ahamad, Tansir (2020) In Journal of Water Process Engineering 33.
Abstract

The experimental methodology achieved in the present study signified that the adsorption and precipitation were main mechanisms occurred together in the removal of nickel from aqueous solution 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 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 crystal precipitates on the... (More)

The experimental methodology achieved in the present study signified that the adsorption and precipitation were main mechanisms occurred together in the removal of nickel from aqueous solution 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 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 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.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acidic wastewater, Cement kiln dust, Co-precipitation, Precipitation, Sorption
in
Journal of Water Process Engineering
volume
33
article number
101033
publisher
Elsevier
external identifiers
  • scopus:85074515678
ISSN
2214-7144
DOI
10.1016/j.jwpe.2019.101033
language
English
LU publication?
yes
id
016d1c67-a063-4ec1-a11c-9b0ee9c91d7b
date added to LUP
2019-11-15 13:21:44
date last changed
2020-03-24 07:06:20
@article{016d1c67-a063-4ec1-a11c-9b0ee9c91d7b,
  abstract     = {<p>The experimental methodology achieved in the present study signified that the adsorption and precipitation were main mechanisms occurred together in the removal of nickel from aqueous solution 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 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 crystal precipitates on the surface of the CKD. Also, these graphs in combination with FT-IR tests proved that [Ni(OH<sub>2</sub>)<sup>n</sup>]<sup>+2</sup> (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.</p>},
  author       = {Abd Ali, Ziad T. and Naji, Laith A. and Almuktar, Suhad A.A.A.N. and Faisal, Ayad A.H. and Abed, Suhail N. and Scholz, Miklas and Naushad, Mu and Ahamad, Tansir},
  issn         = {2214-7144},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {Journal of Water Process Engineering},
  title        = {Predominant mechanisms for the removal of nickel metal ion from aqueous solution using cement kiln dust},
  url          = {http://dx.doi.org/10.1016/j.jwpe.2019.101033},
  doi          = {10.1016/j.jwpe.2019.101033},
  volume       = {33},
  year         = {2020},
}