Adsorption of low level51Cr(VI) from aqueous solution by bismuth trioxide: Kinetic and IR study

Bhutani, M. M.; Kumari, Ramesh

doi:10.1007/bf02039913

Cited by 24 publications

(12 citation statements)

References 14 publications

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“…Several studies have been reported [13-15] about the applicability of simple first-order kinetic equation (1) to describe the adsorption of solid- liquid system:…”

Section: Resultsmentioning

confidence: 99%

Adsorption kinetics of Rhodamine-B on used black tea leaves

Hossain

Alam

2012

J Environ Health Sci Engineer

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Rhodamine B (Rh-B) is one of the most common pollutants in the effluents of textile industries effluents in developing countries. This study was carried out to evaluate the applicability of used black tea leaves (UBTL) for the adsorptive removal of Rh-B from aqueous system by investigating the adsorption kinetics in batch process. The effects of concentration and temperature on adsorption kinetics were examined. First-, second- and pseudo-second order kinetic equations were used to investigate the adsorption mechanism. The adsorption of Rh-B on UBTL followed pseudo-second order kinetics. The equilibrium amount adsorbed and the equilibrium concentration were calculated from pseudo-second-order kinetic plots for different initial concentrations of Rh-B to construct the adsorption isotherm. The adsorption isotherm was well expressed by Langmuir equation. The maximum adsorption capacity of UBTL to Rh-B was found to be 53.2 mg/g at pH = 2.0. The equilibrium amount adsorbed, calculated from pseudo-second-order kinetic plots, increased with temperature increase. The positive value of enthalpy of adsorption, ΔHads = 31.22 kJ/mol, suggested that the adsorption of Rh-B on UBTL at pH = 2.0 is an endothermic process.

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“…Several studies have been reported [13-15] about the applicability of simple first-order kinetic equation (1) to describe the adsorption of solid- liquid system:…”

Section: Resultsmentioning

confidence: 99%

Adsorption kinetics of Rhodamine-B on used black tea leaves

Hossain

Alam

2012

J Environ Health Sci Engineer

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“…In this part, the experimental data [13,14,31,32,33,34,35,36,37,38,39,40] analyzed by Ho and McKay in 1999 [11] are examined in the light of the preceding section.…”

Section: 32mentioning

confidence: 99%

On the comparison of pseudo-first order and pseudo-second order rate laws in the modeling of adsorption kinetics

Simonin

2016

Chemical Engineering Journal

1,470

519

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In most works in the current literature about liquid/solid adsorption kinetics, the respective abilities of pseudo-first order and pseudo-second kinetics for describing the data are compared. In nearly all cases, it is concluded that the latter surpasses the former. The aim of this work is to point out that more caution should be exercised in this comparison. Indeed, it appears that the method generally used is flawed and that it unfairly favors pseudo-second order kinetics. A different method is proposed to analyze experimental results. It is employed here to reexamine experimental data taken from the literature.

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“…Numerous studies have reported first-order Lagergren kinetics 22 for the sorption of metals, such as the sorption of nickel(II) from aqueous solutions by wollastonite and China clay, 23,24 the sorption of traces of chromium(VI) by bismuth trioxide 25 and the sorption of lead(II) on kaolinitic clay. 26 However, it is often incorrect to apply simple kinetic models such as first-or second-order rate equations to a sorption system with solid surfaces that are rarely homogeneous and because the effects of transport phenomena and chemical reactions are often experimentally inseparable.…”

Section: Introductionmentioning

confidence: 99%

Kinetic analysis of the sorption of copper(II) ions on chitosan

Cheung

McKay

2003

J of Chemical Tech & Biotech

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The removal of copper ions from aqueous effluents by chitosan was studied in equilibrium and agitated batch contacting systems. The sorption capacities of chitosan for copper ions are 1.26 and 1.12 mmol g −1 at pH 3.5 and 4.5, respectively. The equilibrium experimental data were best correlated by the Langmuir equation. The kinetics of sorption were studied at an initial solution pH of 4.5 and a chitosan particle size of 355-500 µm. The kinetics were analyzed using four models: the pseudo-first-order, pseudo-second-order, modified second-order and Elovich equations. The rate parameters for the four models were determined and the Elovich equation provided the best correlation of the experimental kinetic data.

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Adsorption of low level51Cr(VI) from aqueous solution by bismuth trioxide: Kinetic and IR study

Cited by 24 publications

References 14 publications

Adsorption kinetics of Rhodamine-B on used black tea leaves

Adsorption kinetics of Rhodamine-B on used black tea leaves

On the comparison of pseudo-first order and pseudo-second order rate laws in the modeling of adsorption kinetics

Kinetic analysis of the sorption of copper(II) ions on chitosan

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