Adsorption/desorption of cationic dye on surfactant modified mesoporous carbon coated monolith: Equilibrium, kinetic and thermodynamic studies

Malekbala, Mohamad Rasool; Khan, Moonis Ali; Hosseini, Soraya; Abdullah, Luqman Chuah; Choong, Thomas Shean Yaw

doi:10.1016/j.jiec.2014.02.047

Cited by 90 publications

(26 citation statements)

References 48 publications

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“…Additionally, the separation factors (R L ) were plotted versus initial MB concentrations in Fig. 5, and all values of the separation factors were calculated between 0 and 1, which proves that MB adsorption by WAC is favorable for different temperatures and MB concentrations studied (Malekbala et al 2015). MB adsorption capacities on WAC at 25, 35, 45, and 55°C were calculated to be 231.48, 243.90, 244.50, and 259.74 mg/g, respectively, indicating that adsorption temperature has a positive effect on MB adsorption by WAC.…”

Section: Adsorption Isothermsmentioning

confidence: 71%

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Üner

Geçgel

Bayrak

2016

Water Air Soil Pollut

107

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By using the activated carbon obtained from Citrullus lanatus rind by zinc chloride activation, methylene blue (MB) removal from aqueous solutions was studied, and the adsorption mechanism was solved through Weber-Morris intraparticle diffusion model, Bangham model, Boyd model, Fourier transform infrared spectra, and scanning electron microscopy. The effects of adsorption parameters (adsorbent concentration, temperature, initial dye concentration, and pH) were investigated. The equilibrium data of MB adsorption were described by applying the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models. The obtained results from adsorption isotherms indicated that Langmuir model is the bestfitted model with the maximum adsorption capacities of 231.48, 243.90, 244.50, and 259.74 mg/g at 25, 35, 45, and 55°C, respectively. The analysis of the kinetic data by pseudo-first-order, pseudo-second-order, and Elovich models displayed that MB adsorption followed pseudo-second-order model. Also, the date obtained from intraparticle diffusion model, Bangham model, and Boyd model presented that intraparticle diffusion, pore diffusion, and film diffusion played significant role in MB adsorption. The thermodynamic studies demonstrated that MB adsorption onto the activated carbon obtained from C. lanatus rind was physical, spontaneous, feasible, and endothermic. Thus, the activated carbon prepared from C. lanatus rind has been an efficient adsorbent for MB removal from an aqueous solution.

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Section: Adsorption Isothermsmentioning

confidence: 71%

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Üner

Geçgel

Bayrak

2016

Water Air Soil Pollut

107

View full text Add to dashboard Cite

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“…A comparison of the maximum monolayer absorption amount of MB on some adsorbents reported in the literatures. Porous carbon rod shaped prepared in this work has a moderate adsorption capacity of 131 mg/g compared to some adsorbents such as coir pith carbon (5.87 mg/g) [28] and carbon coated monolith (388 mg/g) [29].…”

Section: Phenol and Methylene Blue Adsorptionmentioning

confidence: 97%

Fabrication and characterization porous carbon rod-shaped from almond natural fibers for environmental applications

Hosseini

Soltani

Jahangirian

et al. 2015

Journal of Environmental Chemical Engineering

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“…(2014) [1][2][3][4][5][6][7][8][9][10][11][12] www.deswater.com doi: 10.1080/19443994.2014.959062 dyes), and non-ionic (disperse dyes) [1,2]. The Acid Red 57 (AR57; anionic dye) is mainly used for dyeing nylon fabrics and coloring leather.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Several researchers have reported that just 14% of pores may be occupied during the adsorption of dyes using activated carbon [8]. The improvement in mesopores over the surface of carbon could possibly improve the adsorption of larger molecules including dyes [5,9]. In order to synthesize an efficient adsorbent for the removal of large molecules such as dyes, mesoporous carbon with the highly mesoporous structure and uniform pore size (from 2 to 50 nm) is desirable.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…The objective of this research was to investigate the feasibility of mesoporous carboncoated monolith (MCCM) as adsorbent for the removal of AR57. In the previous works, MCCM was used in order to adsorb methylene blue (cationic, basic dye) and methyl orange (anionic, azo reactive dye) with adsorption capacities 388 and 323 mg/g, respectively [9]. The novelty of this work is based on the understanding of intrinsic properties of dyes as adsorbate on adsorption process using MCCM.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

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Development, application, and evaluation of artificial neural network in investigating the removal efficiency of Acid Red 57 by synthesized mesoporous carbon-coated monoliths

Malekbala

Hosseini

Soltani

et al. 2014

Desalination and Water Treatment

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2014): Development, application, and evaluation of artificial neural network in investigating the removal efficiency of Acid Red 57 by synthesized mesoporous carbon-coated monoliths, Desalination and Water TreatmentTo link to this article: http://dx.Acid Red 57 (AR57) has been successfully removed from aqueous solution by adsorption on our synthesized mesoporous carbon-coated monolith (MCCM). For the first time, a powerful artificial neural network (ANN) model has been developed to predict the removal efficiency of AR57 on MCCM. Three critical parameters in adsorption systems, that is, solution's initial pH, initial dye concentration, and contact time were incorporated in the ANN model in order to optimize the observed adsorption process. Langmuir and Freundlich adsorption models were then fitted to the adsorption data to estimate the adsorption capacity. It was concluded that Langmuir isotherm was best-fitted to the data showing a maximum monolayer adsorption capacity of 1,162.7 mg/g. The pseudo-first-order and pseudo-second-order kinetic models were subsequently tested to evaluate the kinetics of the adsorption process. It was revealed that the adsorption kinetics could be better represented by the pseudo-second-order model. A comparison was finally drawn between ANN and pseudo-second-order kinetic models. Based on the error analyses and determination of coefficients, ANN was the more appropriate model to describe the studied adsorption process.

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Adsorption/desorption of cationic dye on surfactant modified mesoporous carbon coated monolith: Equilibrium, kinetic and thermodynamic studies

Cited by 90 publications

References 48 publications

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Fabrication and characterization porous carbon rod-shaped from almond natural fibers for environmental applications

Development, application, and evaluation of artificial neural network in investigating the removal efficiency of Acid Red 57 by synthesized mesoporous carbon-coated monoliths

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