Adsorption of metal ions onto Moroccan stevensite: kinetic and isotherm studies

Benhammou, A.; Yaacoubi, Abdelrani; Nibou, L.; Tanouti, B.

doi:10.1016/j.jcis.2004.08.168

Cited by 319 publications

(150 citation statements)

References 21 publications

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“…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%

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: Introductionmentioning

confidence: 99%

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

Boukerroui¹,

Ourari²,

Ouali³

2012

AJPC

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“…Significant progress continues toward elucidation of chemical processes responsible for phytoextraction interactions [4][5][6][7][8][9][10][11][12][13][14][15]. These include: metal-ion surface complex formation with tissue functional groups [8][9][10][11][12][13][14][15][16]; ion-exchange interactions [10][11][12][13][14][15]; and electrostatic (Coulombic) attraction of metal cations with a net negatively charged plant material [13][14][15]17]. These interactions can be distinguished by decreasing interaction strength and associate affinities [6,15,17].…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, many of these past studies were restricted to single metal-ion exposure conditions [4][5][6][7][8][9][10][11][12][13][14][15]18]. The potential impact of competitive metal ion binding to specific sites was not addressed in those earlier studies.…”

Section: Introductionmentioning

confidence: 99%

Competitive Metal Ion Binding to Datura innoxia Root and Stem Tissue Materials

2016

J Analyt Molecul Tech

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Dried root and stem tissue samples from the plant, Datura innoxia, were exposed to solutions containing six metal ions, Zn 2+ , Cu 2+ , Cd 2+ , Ni 2+ , Pb 2+ , and Eu 3+ . The resulting binding isotherms were generated using multiline atomic emission spectra of supernatant solutions. Application of regularized regression analysis to these isotherms revealed binding sites exhibiting both low and high value conditional affinities. Low affinity sites (1.5×10 -2 to 2.5×10 -1 ) were postulated to involve electrostatic physisorption processes with large potential capacities (0.11 to 3.2 moles gram -1 ). 9 with potential capacities of 12 µmoles g -1 to 0.15 moleg -1 . These were attributed to surface complex formation and included each metal ion studied. This is the first reporting of relative affinities and capacities for metal ion biosorption under competitive conditions involving seven metals. Similarities in measured affinity constants for each metal when comparing root and stem tissue materials suggest similar predominate chemical interactions involving either of these binding mechanisms. These results support mechanisms involving carboxylates for both root and stems materials. Site densities clearly show the vast majority of binding interactions to be governed by more general electrostatic forces. Such would be advantageous for the application of this plant for phytoextraction purposes.

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“…It is great a concern because of the toxic effect of heavy metal ions to plants, animals and human beings [1][2][3][4][5]. Inorganic contaminants such as Cd(II), Cu(II) and Cr(III) are heavy metals which are difficult to be degraded into harmless species [6].…”

Section: Introductionmentioning

confidence: 99%

Study on the Adsorption Properties of Novel Calix[6]arene Polymers for Heavy Metal Cations

Prabawati¹,

Jumina²,

Santosa³

et al. 2012

Indones. J. Chem.

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A research has been conducted to investigate the capability of a series of novel calix [6]arenes-based polymers: poly-monoallyloxycalix [6]arene (2a), poly-monoallyloxypenta-estercalix[6]arene (2b) and poly-monoallyloxypentaacidcalix [6] ABSTRAK Telah dilakukan penelitian untuk mengkaji kemampuan adsorpsi senyawa turunan polikaliks[6]arena yaitu polimonoalilkaliks[6]arena (2a), poli-monoalilesterkaliks[6]arena (2b) dan poli-monoalilasamkaliks[6]arena (2c) terhadap kation logam berat seperti Cd(II), Cu(II) dan Cr(III). Adanya gugus aktif hidroksi (-OH) dan struktur senyawa yang menyerupai terowongan sangat memungkinkan pemanfaatan senyawa-senyawa tersebut sebagai adsorben logam berat. Proses adsorpsi dilakukan dengan metode batch pada variasi keasaman (pH), waktu kontak dan konsentrasi awal ion logam. Hasil penelitian menunjukkan bahwa jumlah ion logam teradsorpsi semakin bertambah dengan bertambahnya pH larutan logam. Untuk ketiga polimer, jumlah ion logam Cd(II), Cu(II) dan

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Adsorption of metal ions onto Moroccan stevensite: kinetic and isotherm studies

Cited by 319 publications

References 21 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

Competitive Metal Ion Binding to Datura innoxia Root and Stem Tissue Materials

Study on the Adsorption Properties of Novel Calix[6]arene Polymers for Heavy Metal Cations

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