Adsorption modeling and optimization of a cationic dye “ crystal violet” in batch reactor

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Koulivand Habib; SHAHBAZI AFSANEH

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Journal: AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR) Year:2019 | Volume:51 | Issue:3 Page(s): 575-584

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Title

Adsorption modeling and optimization of a cationic dye “ crystal violet” in batch reactor

Author(s)

Koulivand Habib | SHAHBAZI AFSANEH | Issue Writer Certificate

Keywords

Graphene oxideQ1

batch adsorptionQ1

crystal violetQ1

optimizationQ2

RSMQ1

Abstract

Graphene oxide nano-sheets were synthesized using modified Hummer’ s method and characterized using SEM, XRD, and FTIR analyses. Response surface methodology (RSM) was used to optimize the effects of the effective factors including pH (4-9), adsorbent dosage (0. 05-0. 4 g/L), initial dye concentration (50-400 mg/L), and temperature (10-40 C° ) in batch adsorption reactor. The adsorption capacity of Graphene oxide and removal percentage of crystal violet in the optimum condition (pH of 7. 4, the adsorbent dosage of 0. 19 g/L, the initial concentration of 100 mg/L, and temperature of 30. 4 C° ) were predicted by the polynomial regression model to be 474 mg/g and 90%, respectively. Dye initial concentration and the adsorbent dosage with 51. 6 and 41. 7% respectively, showed the most percentage of contribution among the effective factors. Adsorption kinetic was investigated using pseudo-first order, pseudo-second order, and intraparticle diffusion kinetic models. Adsorption isotherm also was studied using Freundlich and Langmuir isotherm models. Results demonstrated the high correlation of adsorption kinetic and isotherm with pseudo-second order and Langmuir models respectively. In addition, the thermodynamic study indicated the endothermic and spontaneous nature of adsorption.

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APA: Copy

Koulivand, Habib, & SHAHBAZI, AFSANEH. (2019). Adsorption modeling and optimization of a cationic dye “ crystal violet” in batch reactor. AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR), 51(3 ), 575-584. SID. https://sid.ir/paper/165554/en

Vancouver: Copy

Koulivand Habib, SHAHBAZI AFSANEH. Adsorption modeling and optimization of a cationic dye “ crystal violet” in batch reactor. AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR)[Internet]. 2019;51(3 ):575-584. Available from: https://sid.ir/paper/165554/en

IEEE: Copy

Habib Koulivand, and AFSANEH SHAHBAZI, “Adsorption modeling and optimization of a cationic dye “ crystal violet” in batch reactor,” AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR), vol. 51, no. 3 , pp. 575–584, 2019, [Online]. Available: https://sid.ir/paper/165554/en

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