NickelMaghrebV1, Main, Exploration, bibRecord, 000031

Biosorption of Ni(II) by Fig Male: Optimization and Modeling Using a Full Factorial Design.

Identifieur interne : 000031 ( Main/Exploration ); précédent : 000030; suivant : 000032

Biosorption of Ni(II) by Fig Male: Optimization and Modeling Using a Full Factorial Design.

Auteurs : F. Madjene [Algérie] ; A. Chergui ; M. Trari

Source :

Water environment research : a research publication of the Water Environment Federation [ 1061-4303 ] ; 2016.

RBID : pubmed:27225783

English descriptors

KwdEn :
- Adsorption, Ficus (chemistry), Kinetics, Models, Theoretical, Nickel (chemistry), Thermodynamics, Waste Disposal, Fluid (methods).
MESH :
- chemical , chemistry : Nickel.
- chemistry : Ficus.
- methods : Waste Disposal, Fluid.
- Adsorption, Kinetics, Models, Theoretical, Thermodynamics.

Abstract

The fig male (FM) is successfully used as biosorbent for Ni(2+) removal. The maximum removal efficiency (96.6%) is obtained at pH ~ 5 for a concentration of 1.70 mmol L(-1) and catalyst dose of 5 g L(-1) in less than 10 minutes. The Ni(2+) uptake follows a pseudo-second-order kinetic, the rate constants increase with increasing temperature, and an activation energy of 55.48 kJ mol(-1) is found. The thermodynamic parameters indicate a spontaneous endothermic bisorption. The isotherm data are fitted by the Langmuir and Dubinin-Radushkevich models. The former indicates a maximum Ni(2+) uptake of 0.459 mmol g(-1), which is higher than that of most biosorbents investigated to date. The FTIR spectra reveal the biosorption mechanism between Ni(2+) and FM functional groups. An empirical modeling is performed by using a 2(3) full factorial design, and a regression equation for Ni(2+) biosorption is determined. The biosorbent mass and pH are the most significant parameters affecting the Ni(2+) biosorption.

DOI: 10.2175/106143016X14504669768859
PubMed: 27225783

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">The fig male (FM) is successfully used as biosorbent for Ni(2+) removal. The maximum removal efficiency (96.6%) is obtained at pH ~ 5 for a concentration of 1.70 mmol L(-1) and catalyst dose of 5 g L(-1) in less than 10 minutes. The Ni(2+) uptake follows a pseudo-second-order kinetic, the rate constants increase with increasing temperature, and an activation energy of 55.48 kJ mol(-1) is found. The thermodynamic parameters indicate a spontaneous endothermic bisorption. The isotherm data are fitted by the Langmuir and Dubinin-Radushkevich models. The former indicates a maximum Ni(2+) uptake of 0.459 mmol g(-1), which is higher than that of most biosorbents investigated to date. The FTIR spectra reveal the biosorption mechanism between Ni(2+) and FM functional groups. An empirical modeling is performed by using a 2(3) full factorial design, and a regression equation for Ni(2+) biosorption is determined. The biosorbent mass and pH are the most significant parameters affecting the Ni(2+) biosorption.</div>
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Serveur d'exploration sur le nickel au Maghreb

Biosorption of Ni(II) by Fig Male: Optimization and Modeling Using a Full Factorial Design.

Biosorption of Ni(II) by Fig Male: Optimization and Modeling Using a Full Factorial Design.

Source :

English descriptors

Abstract

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

Le document en format XML

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