NickelMaghrebV1, Main, Exploration, bibRecord, 000489

Use of Phosphate Rock for the Removal of Ni2+ from Aqueous Solutions: Kinetic and Thermodynamics Studies

Identifieur interne : 000489 ( Main/Exploration ); précédent : 000488; suivant : 000490

Use of Phosphate Rock for the Removal of Ni2+ from Aqueous Solutions: Kinetic and Thermodynamics Studies

Auteurs : Z. Elouear [Tunisie] ; R. Ben Amor [Tunisie] ; J. Bouzid [Tunisie] ; N. Boujelben [Tunisie]

Source :

Journal of environmental engineering : (New York, NY) [ 0733-9372 ] ; 2009.

RBID : Pascal:09-0482937

Descripteurs français

Pascal (Inist)
- Roche phosphatée, Solution aqueuse, Cinétique, En discontinu, Sorption, pH, Captation, Modélisation, Isotherme adsorption, Capacité adsorption, Métal récupération, Lixiviation, Métal lourd, Réduction pollution, Désorption.
Wicri :
- topic : Métal lourd.

English descriptors

KwdEn :
- Adsorption capacity, Adsorption isotherm, Aqueous solution, Batchwise, Desorption, Heavy metal, Kinetics, Lixiviation, Modeling, Phosphate rock, Pollution abatement, Recovery metals, Sorption, Uptake, pH.

Abstract

A study was carried out in batch conditions to examine the removal of nickel ions from an aqueous solution by phosphate rock. The effect of different sorption parameters, such as initial metal concentration, equilibration time, solution pH, and temperature on the amount of Ni²⁺ sorbed was studied and discussed. The sorption process followed pseudo-second-order kinetics with necessary time of 2 h to reach equilibrium. The maximum removal obtained is at initial pH around 8. Nickel uptake was quantitatively evaluated using the Langmuir and Dubinin-Kaganer-Radushkevich model. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, Q₀, was found to be 7.63 mg/g. The possibility of metal recovery was investigated using several eluting agents. The desorbed amount of nickel decreased continuously with increasing pH, and increased with increasing Ca²⁺ concentration in leaching solution.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000173
to stream PascalFrancis, to step Curation: 000268
to stream PascalFrancis, to step Checkpoint: 000166
to stream Main, to step Merge: 000503
to stream Main, to step Curation: 000489

Le document en format XML

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<front><div type="abstract" xml:lang="en">A study was carried out in batch conditions to examine the removal of nickel ions from an aqueous solution by phosphate rock. The effect of different sorption parameters, such as initial metal concentration, equilibration time, solution pH, and temperature on the amount of Ni<sup>2+</sup>
 sorbed was studied and discussed. The sorption process followed pseudo-second-order kinetics with necessary time of 2 h to reach equilibrium. The maximum removal obtained is at initial pH around 8. Nickel uptake was quantitatively evaluated using the Langmuir and Dubinin-Kaganer-Radushkevich model. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, Q<sub>0</sub>
, was found to be 7.63 mg/g. The possibility of metal recovery was investigated using several eluting agents. The desorbed amount of nickel decreased continuously with increasing pH, and increased with increasing Ca<sup>2+</sup>
 concentration in leaching solution.</div>
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Use of Phosphate Rock for the Removal of Ni2+ from Aqueous Solutions: Kinetic and Thermodynamics Studies

Use of Phosphate Rock for the Removal of Ni2+ from Aqueous Solutions: Kinetic and Thermodynamics Studies

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri