Removal of rhodamine B from aqueous solution by adsorption onto sodium montmorillonite

Selvam, Parasuraman; Preethi, S.; Basakaralingam, P.; Thinakaran, N.; Sivasamy, A.; Sivanesan, S.

doi:10.1016/j.jhazmat.2007.11.025

Cited by 223 publications

(79 citation statements)

References 21 publications

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“…Increasing the temperature is known to increase the rate of diffusion of the adsorbate molecules across the external boundary layer and in the internal pores of the adsorbent particle, owing to the decrease in the viscosity of the solution for highly concentrated suspensions. Similar results were reported in the literature for sorption of Rhodamine B by activated carbon from bagasse pith (Gad and El-Sayed, 2009) and onto sodium montmorillonite (Panneer Selvam et al, 2008). …”

Section: Thermodynamic Studies 351 Effect Of Temperaturesupporting

confidence: 90%

Equilibrium, thermodynamic and kinetic studies to study the sorption of rhodamine-b by moroccan clay

Elass¹,

Laachach²,

Azzi³

2013

Global NEST Journal

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This study aimed to evaluate the sorption capability of an inexpensive and easily available Moroccan clay, called locally Ghassoul, to remove Rhodamine B (Rh-B) from aqueous solution. Experimental results showed that the equilibrium sorption data fitted well with the Langmuir isotherm and the monolayer sorption capacity was estimated as 448 mg g -1 at 298K. Kinetic analyses showed that the sorption rate was more accurately represented by a pseudo second-order model. The intra-particle diffusion was involved in the overall rate of the sorption process but it was not the only ratecontrolling step. The calculated thermodynamics parameters showed the spontaneous and the endothermic nature of the sorption process. The activation energy found to be 5.36 kJ mol -1 could indicate a physical sorption process. The obtained results confirmed the applicability of this clay as an efficient and economical adsorbent for cationic dyes from contaminated water.

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Section: Thermodynamic Studies 351 Effect Of Temperaturesupporting

confidence: 90%

Equilibrium, thermodynamic and kinetic studies to study the sorption of rhodamine-b by moroccan clay

Elass¹,

Laachach²,

Azzi³

2013

Global NEST Journal

View full text Add to dashboard Cite

show abstract

“…The rate constant k 1 and Q e can be calculated from the slope and intercepts of log (Q e -Q t ) against t. If the calculated Q e value is equal to the experimental Q e then the adsorption is following the pseudo first order kinetics (Selvam et al 2008;Wang and Zhu 2006).…”

Section: Pseudo First Order Kineticsmentioning

confidence: 99%

Calcined eggshell as a cost effective material for removal of dyes from aqueous solution

Borhade¹,

Kale²

2017

Appl Water Sci

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The removal of Rhodamine B, Eriochrome black T and Murexide dyes from aqueous solutions using calcined eggshell powder were investigated. In this study, calcined eggshell powder was applied for its potential use as an adsorbent for the removal of Rhodamine B, Eriochrome black T and Murexide dyes from their aqueous solutions. The calcined eggshell powder obtained was characterized by Fourier Transform Infrared Spectroscopy (FT-IR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). The various parameters such as initial concentration, pH, adsorbent dose and contact time were studied. Various isotherms including Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models were applied for the equilibrium adsorption data. The kinetic study of Rhodamine B, Eriochrome black T and Murexide dyes on calcined eggshell powder follows pseudo-second order kinetics.

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“…O AM tem a sua solubilidade reduzida em meio ácido, ocorrendo a precipitação do mesmo. Além disso, o tratamento ácido da argila aumenta as cargas negativas superficiais (Selvam et al, 2008) que, por sua vez, provocam a repulsão eletrostática com o corante aniônico AM. Contudo o tratamento térmico se mostrou efetivo.…”

Section: Teste De Adsorçãounclassified

Estudo De Adsorção Em Leito Fixo De Corantes Aniônicos Em Argila Bentonita Após Tratamentos Térmico E Ácido

Bruno¹,

Santos²,

Melgar³

2017

Blucher Chemical Engineering Proceedings

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RESUMO -O trabalho realizado consiste em modificar a estrutura da argila bentonita, através dos tratamentos ácido e térmico, a fim de melhorar a sua capacidade adsortiva para corantes aniônicos. Assim, foram feitos estudos em modelos matemáticos teóricos de Clark, Yan e Thomas, cálculo da ZTM e da capacidade adsortiva dinâmica. Desse modo, obteve-se, para o sistema de adsorção Alaranjado de Metila em argila bentonita tratada termicamente, o modelo de Clark melhor relacionado, ZTM igual a 3,5 cm e capacidade dinâmica da coluna igual a 8,9 mg g -1 . Já para o conjunto Vermelho Congo em argila bentonita tratada química e termicamente, teve-se como resultado o modelo de Yan com melhor correlação, ZTM igual a 0,6 cm e capacidade de 27,7 mg g -1 .

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Removal of rhodamine B from aqueous solution by adsorption onto sodium montmorillonite

Cited by 223 publications

References 21 publications

Equilibrium, thermodynamic and kinetic studies to study the sorption of rhodamine-b by moroccan clay

Equilibrium, thermodynamic and kinetic studies to study the sorption of rhodamine-b by moroccan clay

Calcined eggshell as a cost effective material for removal of dyes from aqueous solution

Estudo De Adsorção Em Leito Fixo De Corantes Aniônicos Em Argila Bentonita Após Tratamentos Térmico E Ácido

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