Adsorption kinetics of maxilon blue GRL onto sepiolite from aqueous solutions

Doğan, Mehmet; Alkan, Mahir; Demirbaş, Özkan; Özdemir, Yasemin; Özmetin, Cengiz

doi:10.1016/j.cej.2006.08.016

Cited by 338 publications

(179 citation statements)

References 67 publications

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“…Increasing in temperature also enhances the equilibrium adsorption capacity for the particular adsorbate, especially if chemisorption is the control mechanism [1]. It is well known that organo-bentonite, which belongs to montmorillonite clay (MC), has a lattice with positive of thermal expansion coefficient, so that any temperature increase in the system will promote penetration process of adsorbate onto adsorbent surface layer [4,20].…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…The initial solute concentration provides a necessary driving force to overcome mass transfer resistance between the liquid and the solid phase [1]. The variation in initial solute concentration influences the amount of methylene blue adsorbed and its removal efficiency.…”

Section: Effect Of Initial Solute Concentrationmentioning

confidence: 99%

“…Generally, temperature has two major effects on the adsorption process. Increasing the temperature induces an increase in the diffusion rate of adsorbate molecules onto adsorbent surface, thereby diminishing mass transfer resistance in liquid phase as a result of the reduced viscosity of bulk solution [1].…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…Adsorption isotherm is the most important part for illustrating the mechanism of distributed adsorbate molecules between the liquid phase and the solid phase at equilibrium state [1,4]. Equilibrium adsorption isotherm is vital to the design in adsorption systems and provides valuable information in determining adsorbent surface characteristics whether it is homogeneous or heterogeneous [2].…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…Dyes, which are usually produced by synthetic process, are generally characterized by complex aromatic molecular structure [1]. The presence of dyes in aqueous effluent such as in river stream can be noticed easily because dyes are colored and highly visible.…”

Section: Introductionmentioning

confidence: 99%

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Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

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et al. 2011

Microporous and Mesoporous Materials

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Section: Effect Of Temperaturementioning

confidence: 99%

Section: Effect Of Initial Solute Concentrationmentioning

confidence: 99%

Section: Effect Of Temperaturementioning

confidence: 99%

Section: Adsorption Isothermmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

Kurniawan

Sutiono

et al. 2011

Microporous and Mesoporous Materials

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Model fitting of sorption kinetics data: Misapplications overlooked and their rectifications

et al. 2017

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When the model fitting of sorption kinetics data was performed using linearized pseudosecond-order rate equations based on constant Q e corresponding to equilibrium sorption, the instantaneous driving force for sorption was underestimated, resulting in an erroneous overestimation of the rate constant. To resolve the issue, a rectification of the model fitting was proposed by accounting for the concentration dependence of Q e in the model equation based on the fact that Q e in the equation represents the sorption capacity at that instant as sorption proceeded with time. The rectified approach was validated with experimental data for various sorption systems reported in the literature. It was shown that the rectification yielded true sorption rate constant that characterizes the relationship between sorption rate and solute concentration, thereby resolving the issues associated with the original approach where the specific rate constant was found to depend on solute concentration and sorption time. V

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Application of artificial neural network for comparison and modeling of the ultrasonic and stirrer assisted removal of anionic dye using activated carbon supported with nanostructure material

Ghaedi

Karami

Ghaedi

et al. 2017

Applied Organom Chemis

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In this study, a green approach has been described for the synthesis of copper sulfide nanoparticles loaded on activated carbon (CuS‐NP‐AC) and usability of it for the removal of sunset yellow (SY) dye by ultrasound‐assisted and stirrer has been compared. In addition, the artificial neural network (ANN) model has been employed for a forecasting removal percentage of SY dye using the results obtained. This material was characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The impact of variables, including initial dye concentration (mg/L), pH, adsorbent dosage (g), sonication time (min) and temperature (°C) on SY removal was studied. Fitting the experimental equilibrium data of different isotherm models such as Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models display the suitability and applicability of the Langmuir model. Analysis of experimental adsorption data of different kinetic models including pseudo‐first and second order, Elovich and intraparticle diffusion models indicate the applicability of the second‐order equation model. The adsorbent (0.005 g) is applicable for successful removal of SY dye (> 98%) in short time (9 min) under ultrasound condition. A three layer ANN models with 8 and 6 neurons at hidden layer was selected as optimal models using stirrer and ultrasonic, respectively. These models displayed a good agreement between forecasted data and experimental data with the determination coefficient (R2) of 0.9948 and 0.9907 and mean squared error (MSE) of 0.0001 and 0.0002 for training set using stirrer and ultrasonic, respectively.

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Adsorption kinetics of maxilon blue GRL onto sepiolite from aqueous solutions

Cited by 338 publications

References 67 publications

Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

Model fitting of sorption kinetics data: Misapplications overlooked and their rectifications

Application of artificial neural network for comparison and modeling of the ultrasonic and stirrer assisted removal of anionic dye using activated carbon supported with nanostructure material

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