Retention of chromium (III) and cadmium (II) from aqueous solution by illitic clay as a low-cost adsorbent

Ghorbel–Abid, Ibtissem; Galai, K.; Trabelsi‐Ayadi, Malika

doi:10.1016/j.desal.2009.06.079

Cited by 62 publications

(24 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To evaluate the effect of contact time, the experiments were conducted using 1 g of clay per 100 mL of copper solution at 1 …”

Section: Batch Sorption Proceduresmentioning

confidence: 99%

“…Clays and minerals such as montmorillonite, vermiculite, illite, kaolinite and bentonite are known as alternative materials used to adsorption of heavy metal due to several economic advantages [1][2][3][4][5][6][7][8][9] and their intrinsic properties, such as large specific surface area, excellent physical and chemical stability and properties structural and surface 10 . Other low-cost adsorbents have been investigated, mainly using bioadsorbents, such as algae 11 and chitosan 12 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems

2011

View full text Add to dashboard Cite

Cu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N 2 adsorption (BET) and Cationic Exchange Capacity (CEC). Batch experiments were performed at a constant temperature, adjusting the pH of the solution in contact with clays. Adsorption assays in fixed bed were conducted at the flow rate determined through mass transfer zone (MTZ). Langmuir and Freundlich models were adjusted to equilibrium data. The results of characterization indicated that the temperature of 500 °C is best suited for the calcination of the clays. The maximum adsorption capacity was higher for dynamic system than fixed bed compared to static system, enhancing from 0.0748 to 0.1371 and from 0.0599 to 0.22 mmol.g -1 of clay for "Bofe" and "Verde-lodo", respectively.

show abstract

“…To evaluate the effect of contact time, the experiments were conducted using 1 g of clay per 100 mL of copper solution at 1 …”

Section: Batch Sorption Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems

2011

View full text Add to dashboard Cite

show abstract

“…This model often successfully fitted high solute activities and the intermediate range of concentrations data well. The linear form of this model was expressed by Equations 8 (15): (8) lnq e = lnq m − B 2 …”

Section: Isotherm Studiesmentioning

confidence: 99%

“…Presently, several studies on the use of lowcost adsorbents are published. These studies recommend using clays as based barriers at the waste disposal area to protect the migration of hazardous contaminants (8). Clay minerals, due to their large surface area and high cation exchange capacity, are studied for potential applications as environmental remediation agents to remove heavy metals and organic contaminants from water (9).…”

Section: Introductionmentioning

confidence: 99%

Hexavalent Chromium Adsorption onto Fire Clay

Rahmani¹,

Foroughi²,

Noorimotlagh³

et al. 2016

Avicenna J Environ Health Eng

View full text Add to dashboard Cite

Cr (VI) as an extremely soluble and highly toxic ion is present in effluents of industries and imposes severe health-related problems. The current study aimed to provide information on Cr (VI) adsorption potential of fire clay as an abundant, cost-effective and untried material. Batch adsorption trials of Cr (VI) were performed to investigate the effects of pH, contact time, initial metal ion concentration and the adsorbent dosage. Langmuir, Freundlich and Dubinin-Radushkevich isotherm models were used to evaluate the equilibrium data at 20°C and regression coefficients were derived. Moreover, adsorption kinetics was analyzed using the pseudo-first-order and the pseudo-second-order kinetic models. Maximum chromium removal was found at pH 2.0. A kinetic study yielded an optimum equilibrium time of 90 minutes with an adsorbent dose of 2.5 g/50 mL. Results suggested that the equilibrium adsorption described by the Freundlich model. The kinetic data of the sorption showed that the pseudo second-order equation was the more appropriate. The results of the study indicated that fire clay was not a suitable adsorbent for Cr (IV). Apart from relatively long equilibrium time, the efficiency was not satisfactory. Therefore, searching for better alternative and/or modify such adsorbent is necessary in this area.

show abstract

“…The cost of clay is relatively low compared to other alternative adsorbents, including activated charcoal, natural and synthetic zeolites, and ion exchange resins. Clay minerals such as montmorillonite, vermiculite, illite and kaolinite are among the natural materials that have been investigated as adsorbents for metals (Turan et al, 2011;Olu-Owolabi and Unuabonah, 2011;Ghorbel-Abid et al, 2010;Mao et al, 2009;Bhattacharyya and Gupta, 2008;Sajidu et al, 2008). Another advantage of using clay as an adsorbent is due to its intrinsic properties such as high specific surface area, excellent physical and chemical stability and other structural and surface properties (Chen et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Insight of the removal of nickel and copper ions in fixed bed through acid activation and treatment with sodium of clay

Neto

Vieira

Silva

2014

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-The bentonitic clays show good adsorptive characteristics, being used as alternative material for removing metals. This study evaluates several treatments (calcination, acid activation and treatment with sodium) of bentonite type Bofe in the removal of nickel and copper. Analyses were performed for physicochemical characterization of clay using the techniques: X-ray fluorescence (XRF), thermal analysis (TG and DTA), X-ray Diffraction (XRD), the ethylene glycol monoethyl ether (EGME) method, N 2 adsorption (BET) and Scanning Electron Microscopy (SEM). Among the changes induced by acid activation and sodium transformations, the treatment with sodium chloride in fixed bed showed the highest performance in the monocomponent removal of nickel and copper.

show abstract

Retention of chromium (III) and cadmium (II) from aqueous solution by illitic clay as a low-cost adsorbent

Cited by 62 publications

References 18 publications

Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems

Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems

Hexavalent Chromium Adsorption onto Fire Clay

Insight of the removal of nickel and copper ions in fixed bed through acid activation and treatment with sodium of clay

Contact Info

Product

Resources

About