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:: Volume 11, Issue 4 ( June 2017) ::
Qom Univ Med Sci J 2017, 11(4): 90-101 Back to browse issues page
Biosorption of Bisphenol A by Agricultural Waste: A Kinetic and Isothermic Study
Davoud Balarak *1, Mahtab Aghakhani 2, Yousef Mahdavi 3, Ali Joghataei 2
1- Department of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran. , dbalarak2@gmail.com
2- Student Research Committee, Qom University of Medical Sciences, Qom, Iran.
3- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
Abstract:   (384 Views)

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Abstract

Background and Objectives: Bisphenol A is a phenolic compound, which even in low concentration, is harmful and toxic for human and environment and is abundantly found in industrial effluents. In the present study, the removal of bisphenol A by Canola wastes, was investigated.

Methods: In this experimental study, first canola waste was collected and their stem was removed, and then were dried in fur (105°C for 24h) and were sized using ASTM. The changes of pH, adsorbent dosage, contact time, and bisphenol A concentration, were assessed and the remaining concentration of bisphenol A was analyzed using HPLC. Equilibrium data were investigated by various types of adsorption isotherms and kinetics.

Results: In this study, the specific surface area of adsorbent was 52.5m2/g. The maximum absorption of bisphenol A was obtained at pH=3, adsorbent dosage was 4g/L and contact time was 75 min. The bisphenol A removal efficiency decreased from 98.9% to 65.4% with increasing concentrations of bisphenol A from 25 to 200mg/L. Also, the results of adsorption study showed the highest correlation with the Langmuir isotherm and pseudo second-order kinetic model.

Conclusion: According to the results of the current study, bisphenol adsorbent can be used as an effective and low-cost adsorbent to treat the industrial wastewater and/or aqueous solution containing phenolic compounds.

Keywords: Bisphenol A, Adsorption, Canola oil
Full-Text [PDF 506 kb]   (179 Downloads)    
Type of Study: Original Article | Subject: بهداشت محیط
Received: 2016/04/27 | Accepted: 2016/06/2 | Published: 2017/06/14
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Balarak D, Aghakhani M, Mahdavi Y, Joghataei A. Biosorption of Bisphenol A by Agricultural Waste: A Kinetic and Isothermic Study. Qom Univ Med Sci J . 2017; 11 (4) :90-101
URL: http://journal.muq.ac.ir/article-1-768-en.html
Volume 11, Issue 4 ( June 2017) Back to browse issues page
مجله دانشگاه علوم پزشکی قم Qom University of Medical Sciences Journal
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