Adsorption kinetics of zinc in multicomponent ionic systems

Pardo-Botello, Rosario; Fernández-González, C.; Gil, Eduardo Pinilla; Cuerda-Correa, Eduardo M.; Gómez-Serrano, V.

doi:10.1016/j.jcis.2004.04.039

Cited by 18 publications

(11 citation statements)

References 24 publications

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“…The total metal concentration of the binary and ternary systems was higher than that of single-solute systems while the concentration of individual metal was the same as that of single-solute systems. On the basis of the magnitude of the repulsive electrostatic forces existing between ions in the bulk solution it appears that the adsorption of metals in the multi-solute systems would not be favorable kinetically or thermodynamically (Pardo-Botello et al, 2004). Gündogan et al (2004) also found that the initial adsorption rate decreased with the increase of Cu initial concentration in the Cuepeat system.…”

Section: Adsorption Kinetics Of Pb Cu and CD On Peat In Single-and mentioning

confidence: 99%

Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat

Qin

Wen

Shan

et al. 2006

Environmental Pollution

231

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X-ray absorption spectroscopic study provided an evidence for the competitive adsorption mechanism of Pb, Cu, and Cd on peat. AbstractCombined use of batch equilibration adsorption and X-ray absorption spectroscopy (XAS) was employed to study the mechanisms of competitive adsorption of Pb, Cu, and Cd on Danish and Heilongjiang peat in single-and multi-solute systems. The adsorption capacity and initial adsorption rate on the same peat in single-solute systems followed the order Pb > Cu > Cd. Both the adsorbed amount of each metal (q 0 m ) and its initial adsorption rate were decreased in multi-solute systems. It was observed that the adsorbed amounts of metals at low-energy adsorption sites (q m,1 ) decreased pronouncedly compared to those at high-energy adsorption sites (q m,2 ), indicating that the competitive adsorption of Pb, Cu and Cd occurred mainly at the low-energy adsorption sites. XAS study revealed that both Pb and Cu were coordinated in peat predominantly to carboxylic moieties without excluding the hydroxyl groups, thereby providing an insight into the mechanism of competitive adsorption of Pb and Cu on peat.

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Section: Adsorption Kinetics Of Pb Cu and CD On Peat In Single-and mentioning

confidence: 99%

Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat

Qin

Wen

Shan

et al. 2006

Environmental Pollution

231

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“…A large excess of zinc may be carcinogenic [4]. That is why the development of simple and effective materials for removal of zinc from polluted environments, including waters, is a topic of current interest [5][6][7]. Among the heavy metal removal procedures, the ion-exchange process is very effective for elimination of various heavy metals and can be easily recovered and reused by regeneration methods [8].…”

Section: Introductionmentioning

confidence: 99%

Zinc-binding activity of different pectin compounds in aqueous solutions

Khotimchenko

Коленченко

Khotimchenko

2008

Journal of Colloid and Interface Science

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“…Natural zeolite and bentonite were studied by Sheta et al [8] for the removal of zinc and iron. Pardo-Botello et al [9] and Dabek [10] reported the use of activated carbon for the zinc removal. Raw and surfactant-modified montmorillonite was also used by Lin and Juang [11] to study the adsoption of zinc and copper.…”

Section: Introductionmentioning

confidence: 99%