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The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry

Samo za registrovane korisnike
2013
Autori
Smičiklas, Ivana D.
Smiljanić, Slavko N.
Perić-Grujić, Aleksandra
Šljivić-Ivanović, Marija Z.
Antonović, Dušan
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
The removal of Ni(II) from aqueous solutions by raw red mud powder was studied in the absence and in the presence of citrate ligand, as a function of process parameters. Using lower initial Ni(II) concentration (10(-3) mol/L) detectable amounts were found only at initial pH 3, whereas for higher concentration (2 x 10(-3) mol/L) removal increased simultaneously with pH in the range 3-4 and at pH gt 8. Process efficiency was suppressed in the presence of citrate. However, at Ni/Citrate molar ratios 1:0.25 and 1:0.5, 10-20% decrease was noticed in acidic media, while the negative influence diminished with the rise of pH. At higher ligand rates, formation of stable aqueous complex between Ni(II) and citrate significantly reduced metal removal in the whole tested initial pH range (3-10). Due to instantaneous pH rise above 8, removal of Ni(II) from 10(-3) mol/L solution was completed in 5 min. Kinetic data demonstrated slower Ni(II) uptake using both solutions of higher initial Ni(II) conc...entrations and Ni/Citrate solutions. At initial pH 5, estimated capacity towards Ni(II) was found to be 27.4 mg/g, without citrate. For Ni/Citrate molar ratios 1:0.25 and 1:0.5, capacities decreased slightly to 25 mg/g and 21 mg/g, whereas at equimolar and higher concentrations, citrate significantly inhibited Ni(II) immobilization (7.6 mg/g and 2.5 mg/g, respectively for Ni/Citrate ratios 1:1 and 1:2). The results demonstrated beneficial effect of red mud high alkalinity on Ni(II) removal. The sorbent satisfactorily immobilize nickel from solutions having initial Ni/Citrate molar ratios lower than 1:1, and neutral to alkaline initial pH. FUR analysis confirmed that red mud can act as a removal agent for Ni(II), Ni/Citrate complex and free citrate ligand.

Ključne reči:
Red mud / Ni(II) / Citrate / Sorption / Precipitation
Izvor:
Chemical Engineering Journal, 2013, 214, 327-335
Izdavač:
  • Elsevier Science Sa, Lausanne
Finansiranje / projekti:
  • Nove tehnologije za monitoring i zaštitu životnog okruženja od štetnih hemijskih supstanci i radijacionog opterećenja (RS-43009)

DOI: 10.1016/j.cej.2012.10.086

ISSN: 1385-8947

WoS: 000315322700040

Scopus: 2-s2.0-84870219151
[ Google Scholar ]
27
22
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2495
Kolekcije
  • Radovi istraživača / Researchers’ publications (TMF)
Institucija/grupa
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Smičiklas, Ivana D.
AU  - Smiljanić, Slavko N.
AU  - Perić-Grujić, Aleksandra
AU  - Šljivić-Ivanović, Marija Z.
AU  - Antonović, Dušan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2495
AB  - The removal of Ni(II) from aqueous solutions by raw red mud powder was studied in the absence and in the presence of citrate ligand, as a function of process parameters. Using lower initial Ni(II) concentration (10(-3) mol/L) detectable amounts were found only at initial pH 3, whereas for higher concentration (2 x 10(-3) mol/L) removal increased simultaneously with pH in the range 3-4 and at pH  gt  8. Process efficiency was suppressed in the presence of citrate. However, at Ni/Citrate molar ratios 1:0.25 and 1:0.5, 10-20% decrease was noticed in acidic media, while the negative influence diminished with the rise of pH. At higher ligand rates, formation of stable aqueous complex between Ni(II) and citrate significantly reduced metal removal in the whole tested initial pH range (3-10). Due to instantaneous pH rise above 8, removal of Ni(II) from 10(-3) mol/L solution was completed in 5 min. Kinetic data demonstrated slower Ni(II) uptake using both solutions of higher initial Ni(II) concentrations and Ni/Citrate solutions. At initial pH 5, estimated capacity towards Ni(II) was found to be 27.4 mg/g, without citrate. For Ni/Citrate molar ratios 1:0.25 and 1:0.5, capacities decreased slightly to 25 mg/g and 21 mg/g, whereas at equimolar and higher concentrations, citrate significantly inhibited Ni(II) immobilization (7.6 mg/g and 2.5 mg/g, respectively for Ni/Citrate ratios 1:1 and 1:2). The results demonstrated beneficial effect of red mud high alkalinity on Ni(II) removal. The sorbent satisfactorily immobilize nickel from solutions having initial Ni/Citrate molar ratios lower than 1:1, and neutral to alkaline initial pH. FUR analysis confirmed that red mud can act as a removal agent for Ni(II), Ni/Citrate complex and free citrate ligand.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry
EP  - 335
SP  - 327
VL  - 214
DO  - 10.1016/j.cej.2012.10.086
ER  - 
@article{
author = "Smičiklas, Ivana D. and Smiljanić, Slavko N. and Perić-Grujić, Aleksandra and Šljivić-Ivanović, Marija Z. and Antonović, Dušan",
year = "2013",
abstract = "The removal of Ni(II) from aqueous solutions by raw red mud powder was studied in the absence and in the presence of citrate ligand, as a function of process parameters. Using lower initial Ni(II) concentration (10(-3) mol/L) detectable amounts were found only at initial pH 3, whereas for higher concentration (2 x 10(-3) mol/L) removal increased simultaneously with pH in the range 3-4 and at pH  gt  8. Process efficiency was suppressed in the presence of citrate. However, at Ni/Citrate molar ratios 1:0.25 and 1:0.5, 10-20% decrease was noticed in acidic media, while the negative influence diminished with the rise of pH. At higher ligand rates, formation of stable aqueous complex between Ni(II) and citrate significantly reduced metal removal in the whole tested initial pH range (3-10). Due to instantaneous pH rise above 8, removal of Ni(II) from 10(-3) mol/L solution was completed in 5 min. Kinetic data demonstrated slower Ni(II) uptake using both solutions of higher initial Ni(II) concentrations and Ni/Citrate solutions. At initial pH 5, estimated capacity towards Ni(II) was found to be 27.4 mg/g, without citrate. For Ni/Citrate molar ratios 1:0.25 and 1:0.5, capacities decreased slightly to 25 mg/g and 21 mg/g, whereas at equimolar and higher concentrations, citrate significantly inhibited Ni(II) immobilization (7.6 mg/g and 2.5 mg/g, respectively for Ni/Citrate ratios 1:1 and 1:2). The results demonstrated beneficial effect of red mud high alkalinity on Ni(II) removal. The sorbent satisfactorily immobilize nickel from solutions having initial Ni/Citrate molar ratios lower than 1:1, and neutral to alkaline initial pH. FUR analysis confirmed that red mud can act as a removal agent for Ni(II), Ni/Citrate complex and free citrate ligand.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry",
pages = "335-327",
volume = "214",
doi = "10.1016/j.cej.2012.10.086"
}
Smičiklas, I. D., Smiljanić, S. N., Perić-Grujić, A., Šljivić-Ivanović, M. Z.,& Antonović, D.. (2013). The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 214, 327-335.
https://doi.org/10.1016/j.cej.2012.10.086
Smičiklas ID, Smiljanić SN, Perić-Grujić A, Šljivić-Ivanović MZ, Antonović D. The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry. in Chemical Engineering Journal. 2013;214:327-335.
doi:10.1016/j.cej.2012.10.086 .
Smičiklas, Ivana D., Smiljanić, Slavko N., Perić-Grujić, Aleksandra, Šljivić-Ivanović, Marija Z., Antonović, Dušan, "The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry" in Chemical Engineering Journal, 214 (2013):327-335,
https://doi.org/10.1016/j.cej.2012.10.086 . .

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