Submitted: 09 Oct 2018
Revised: 11 Dec 2018
Accepted: 15 Dec 2018
First published online: 29 Dec 2018
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Avicenna J Environ Health Eng. 2018;5(2):91-99.
doi: 10.15171/ajehe.2018.12
  Abstract View: 170
  PDF Download: 192

Original Article

Reactive Blue 203 dye Removal Using Biosorbent: A Study of Isotherms, Kinetics, and Thermodynamics

Marzieh Bagheri 1,2 * ORCID logo, Mohammad Nasiri 3, Bahareh Bahrami 1

1 Department of Chemical Engineering, Jami Institute of Technology, Isfahan, Iran
2 Departement of Chemical Engineering, Daneshpajoohan Institute of higher education, Isfahan, Iran
3 Department of Chemistry, Malek Ashtar University of Technology, Isfahan, Iran


Nowadays, due to increasing usage of dye in various industries and its destructive effects on health and environment, it is necessary to remove dyes from industrial wastes. Although few studies can be found on using pine cone for removal of different dyes, it has not been used yet to remove Reactive Blue 203 (RB203) dye. The purpose of this study is to investigate RB203 dye adsorption using activated carbon produced from pine cone. Optimal values of influencing factors for RB203 dye removal were obtained. The results showed that the maximum removal was occurred at a pH of 2, temperature of 30˚C, dye concentration of 30 mg/L, adsorbent dosage of 100 mg/L, and contact time of 15 min. The maximum removal percentage was 98.48%. In order to study the synthesized activated carbon, some characterization methods including scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy and Brunauer-Emmett-Teller (BET) have been used. Investigation of adsorption isotherm models revealed that adsorption of RB203dye can be described through D-R and Temkin isotherm models. Additionally, RB203 dye removal follows the pseudo-firstorder kinetic equation.
Keywords: Pine cone, Adsorption, Activated carbon, Thermodynamics, Coloring agents, Kinetics,
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