European Journal of Chemistry 2011, 2(1), 83-93. doi:10.5155/eurjchem.2.1.83-93.191

Simultaneous removal of chromotrope 2B and radionuclides from mixed radioactive process wastewater using organo-bentonite


Kamal Shakir (1,*) , Hussein Fouad Ghoneimy (2) , Ibtisam Tadros Hennawy (3) , Ahmed Faouzy Elkafrawy (4) , Shokry Gad Elrab Beheir (5) , Mamdoh Refaat (6)

(1) Nuclear Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Nasr City, EG-13759, Egypt
(2) Nuclear Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Nasr City, EG-13759, Egypt
(3) Organo-metallic and Organo-metalloid Chemistry Department, National Research Center, Cairo, Dokki, EG-12622, Egypt
(4) Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Abbassia, EG-11655, Egypt
(5) Nuclear Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Nasr City, EG-13759, Egypt
(6) Nuclear Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Nasr City, EG-13759, Egypt
(*) Corresponding Author

Received: 30 Jun 2010, Accepted: 29 Sep 2010, Published: 28 Mar 2011

Abstract


The simultaneous removal of cationic radionuclides, 137Cs(I), 60Co(II) and 152+154Eu(III), and a chemically toxic anionic pollutant, the analytical reagent chromotrope 2B (C2B), from simulated mixed radioactive process wastewater (MRPWW) has been investigated using bentonite modified with cetyltrimethylammonium bromide. Modification was confirmed by elemental analysis, X-ray diffraction and infrared spectroscopy. Bentonite partially modified to 78% of the cation exchange capacity (PMB) was found capable to adsorb adequately both C2B and the radionuclides from aqueous solutions. Detailed batch kinetics and isotherm studies for removal of C2B singly and the radionuclides simultaneously were performed. The C2B and radionuclides kinetics conform to pseudo-first-order rate equation and the adsorption isotherms are treated with Freundlich and Langmuir models. Thermodynamic parameters were evaluated. Results suggest physisorption and ion-exchange as the principal uptake mechanism for C2B and the radionuclides, respectively. High simultaneous removal was obtained for C2B (≈ 100%) and each of the test radionuclides (>99%) from the simulated MRPWW.

2_1_83_93_800


Keywords


CTAB-bentonite; Chromotrope 2B; Radionuclides; Adsorption; Radioactive wastewater; Wastewater treatment

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DOI: 10.5155/eurjchem.2.1.83-93.191

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How to cite


Shakir, K.; Ghoneimy, H.; Hennawy, I.; Elkafrawy, A.; Beheir, S.; Refaat, M. Eur. J. Chem. 2011, 2(1), 83-93. doi:10.5155/eurjchem.2.1.83-93.191
Shakir, K.; Ghoneimy, H.; Hennawy, I.; Elkafrawy, A.; Beheir, S.; Refaat, M. Simultaneous removal of chromotrope 2B and radionuclides from mixed radioactive process wastewater using organo-bentonite. Eur. J. Chem. 2011, 2(1), 83-93. doi:10.5155/eurjchem.2.1.83-93.191
Shakir, K., Ghoneimy, H., Hennawy, I., Elkafrawy, A., Beheir, S., & Refaat, M. (2011). Simultaneous removal of chromotrope 2B and radionuclides from mixed radioactive process wastewater using organo-bentonite. European Journal of Chemistry, 2(1), 83-93. doi:10.5155/eurjchem.2.1.83-93.191
Shakir, Kamal, Hussein Fouad Ghoneimy, Ibtisam Tadros Hennawy, Ahmed Faouzy Elkafrawy, Shokry Gad Elrab Beheir, & Mamdoh Refaat. "Simultaneous removal of chromotrope 2B and radionuclides from mixed radioactive process wastewater using organo-bentonite." European Journal of Chemistry [Online], 2.1 (2011): 83-93. Web. 15 Nov. 2019
Shakir, Kamal, Ghoneimy, Hussein, Hennawy, Ibtisam, Elkafrawy, Ahmed, Beheir, Shokry, AND Refaat, Mamdoh. "Simultaneous removal of chromotrope 2B and radionuclides from mixed radioactive process wastewater using organo-bentonite" European Journal of Chemistry [Online], Volume 2 Number 1 (28 March 2011)

DOI Link: https://doi.org/10.5155/eurjchem.2.1.83-93.191

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