Adsorption kinetic study for the removal of nickel (II) and aluminum (III) from an aqueous solution by natural adsorbents

Choksi, Pratik M.; Joshi, Vishal Y.

doi:10.1016/j.desal.2006.04.081

Cited by 68 publications

(36 citation statements)

References 14 publications

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“…The results mentioned in Table 6 show that the initial concentrations 25 and 35 mg L -1 are in agreement with an endothermic adsorption process for the copper ions removal on bentonite seeing that 0 H ∆ >0 [3,27]. Also, the positive values of the entropy attest of an affinity between the Cu 2+ ions and the clay material [2,27]. Thus, the positive entropy favors the complexation and the stability of adsorption.…”

Section: 6thermodynamic Studysupporting

confidence: 67%

“…Also, the positive values of the entropy attest of an affinity between the Cu 2+ ions and the clay material [2,27]. Thus, the positive entropy favors the complexation and the stability of adsorption, while the 0 G ∆ values ( absolute value ) increase with the increasing of the temperature indicating the spontaneousness in the adsorption process of Cu 2+ ions by bentonite [3,27].…”

Section: 6thermodynamic Studymentioning

confidence: 93%

“…However, several difficulties which are essentially associated with the bad control of technology, availability and high cost of the methods. This situation has motivated some researchers to investigate other alternatives oriented to the use of natural materials as adsorbent that can eliminate toxic substance from aqueous solutions [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The use of bentonites in the elimination of this pollutant appears to be the most studied methods [2,3]. The montmorillonite, which is considered as the main component of bentonites of Maghnia [8], is a clay of smectites family that have good adsorption properties due to its specific surface and cation exchange capacity (CEC) [9].…”

Section: Introductionmentioning

confidence: 99%

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Copper (II) ions removal from aqueous solution using bentonite treated with ammonium chloride

Boukerroui¹,

Ourari²,

Ouali³

2012

AJPC

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Email address:Hamid_602001@yahoo.fr (B. Abdelhamid),alourari@yahoo.fr (A. Ourari),ouali@univ-mosta.dz (M. Said Ouali) To cite this article: Abstract: A raw bentonite, obtained from Maghnia (Western Algerian) was impregnated into 1M ammonium chloride solution and thermally treated in a furnace at 200 °C during one hour. This treatment has improved its removal capacity of copper from aqueous solutions to about 30 %. The performances of the copper adsorption of this new material, after its physicochemical treatment, were evaluated by quantitative analysis on the copper remaining in the solution. The interface phenomena of bentonite-Cu2+ aqueous solution adheres to the Langmuir and Freundlich models. The adsorption energy, calculated by using Dubinin-Radushkevich equation, has proved that the removal of copper with this clay material is an ion exchange process. Nevertheless, the thermal treatment of this clay has inhibited the temperature effect on the retention of copper ions. Thus, the kinetic law governing the copper adsorption described here is following a second order model.

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Section: 6thermodynamic Studysupporting

confidence: 67%

Section: 6thermodynamic Studymentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Copper (II) ions removal from aqueous solution using bentonite treated with ammonium chloride

Boukerroui¹,

Ourari²,

Ouali³

2012

AJPC

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“…Among the known health related effects of nickel are skin allergies, lung fibrosis, variable degrees of kidney and cardiovascular system poisoning and stimulation of neoplastic transformation [3,4]. Adsorption of nickel ions by clay has been the subject of several recent studies [5][6][7][8][9]. It was found that the adsorption of nickel from aqueous solution depends on contact time, amount of adsorbent, solution pH and Nickel concentration.…”

Section: Introductionmentioning

confidence: 99%

Removal of nickel from aqueous solutions using Saudi activated bentonite

Al-Shahrani¹

2011

Sustainability Today

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This research project investigates the application of Saudi activated clay (bentonite) to remove nickel from aqueous solutions. The removal characteristics of nickel ions from aqueous solution using Saudi activated bentonite were investigated under various operating variables like shaking time, solution pH, clay dosage and initial metal concentration. The results showed that the sorption of nickel ions on Saudi activated clay was relatively fast and the equilibrium was reached after 40 min. They also showed that increasing the initial nickel concentration decreased nickel removal percentage due to the saturation of clay with nickel ions. Furthermore, the adsorption of nickel increases from 70 to 100% with an increase in solution pH from 2.0 to 9.0. The adsorption isotherm data were well fitted with both the linearized Langmuir and Freundlich models. Nickel adsorption onto Saudi activated bentonite was well represented by the pseudo-second-order kinetic model.

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Conclusions

2011

A Guide to the Economic Removal of Metals From Aqueous Solutions

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Adsorption kinetic study for the removal of nickel (II) and aluminum (III) from an aqueous solution by natural adsorbents

Cited by 68 publications

References 14 publications

Copper (II) ions removal from aqueous solution using bentonite treated with ammonium chloride

Copper (II) ions removal from aqueous solution using bentonite treated with ammonium chloride

Removal of nickel from aqueous solutions using Saudi activated bentonite

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