Repository of Research and Investigative Information

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Ilam University of Medical Sciences

Efficient adsorption of bisphenol A from aqueous solutions using low-cost activated carbons produced from natural and synthetic carbonaceous materials

Thu Oct 6 07:33:12 2022

(2019) Efficient adsorption of bisphenol A from aqueous solutions using low-cost activated carbons produced from natural and synthetic carbonaceous materials. Desalination and Water Treatment. pp. 177-187. ISSN 1944-3994

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Abstract

Milk-vetch (MV) and compact discs (CDs) wastes, as natural and synthetic carbonaceous precursors, were used to produce low-cost activated carbons. The efficiency of adsorption of these adsorbents was compared with commercial activated carbon (CAC) for the adsorption of bisphenol A (BPA) from aqueous solutions. The activated carbon prepared from MV (MVAC) had a higher adsorption capacity, 33.19 mg g(-1), than that of both CD wastes (CDAC), 12.15 mg g(-1), and CAC, 29.22 mg g(-1). These adsorbents were characterized using X-ray diffraction, scanning electron microscope, Brunauer-Emmett-Teller method, pH(zpc) and Fourier transform-infrared spectra techniques. The effect of operating parameters on the adsorption of BPA such as the pH, contact time, adsorbent dosages, initial BPA concentrations, temperature, and ionic strength were studied. The optimal removal of the BPA was achieved at neutral pH (pH 7) by three adsorbents. Equilibrium contact times of 90 min were achieved for all the investigated activated carbons. Based on the obtained results, the pseudo-second-order kinetic model and Langmuir isotherm fitted the experimental finding better than other isotherms and kinetics. Furthermore, thermodynamic parameters were calculated and Delta G, Delta H and Delta S indicate that the reaction is spontaneous and endothermic, and physisorption mechanism was the dominant mechanism in terms of adsorption of BPA onto the three adsorbents.

Item Type: Article
Creators:
CreatorsEmail
Jaafarzadeh, N.UNSPECIFIED
Baboli, Z.UNSPECIFIED
Noorimotlagh, Z.UNSPECIFIED
Martinez, S. S.UNSPECIFIED
Ahmadi, M.UNSPECIFIED
Alavi, S.UNSPECIFIED
Mirzaee, S. A.UNSPECIFIED
Keywords: Adsorption Bisphenol A CD wastes Milk-vetch Activated carbon endocrine disrupting chemicals methylene-blue textile dye photocatalytic degradation doped tio2 basic dye removal equilibrium nonylphenol water Engineering Water Resources
Divisions:
Page Range: pp. 177-187
Journal or Publication Title: Desalination and Water Treatment
Journal Index: ISI
Volume: 154
Identification Number: https://doi.org/10.5004/dwt.2019.23897
ISSN: 1944-3994
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/2396

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