Response Surface Methodology for Radioactive Strontium Adsorption on Molecular Sieves

Year 2021, Volume: 17 Issue: 4, 379 - 382, 29.12.2021

Ekrem Çiçek

Abstract

In the nuclear industry, the disposal of radioactive waste is a crucial issue. Strontium is one of the most dangerous radionuclides to human health. In this study, strontium 85 adsorption on molecular sieves was investigated. The factors affecting the adsorption on molecular sieves were examined. In order to increase adsorption, the sorbent (molecular sieves) was activated before contact with radioactive strontium. The response surface methodology was used to evolve the predictive regression model for adsorption of radioactive strontium on molecular sieves. The experimental and predicted maximum decontamination factor 14.23 and 12.93 was obtained, respectively. Molecular sieves were found to be useful for the removal of radioactive strontium from water solution.

Keywords

Response surface methodology, adsorption, radioactive strontium, molecular sieves

References

• Honda, MC, Aono, T, Aoyama, M, Hamajima, Y, Kawakami, H, Kitamura, M, Masumoto, Y, Miyazawa, Y, Takigawa, M, Saino, T. 2012. Dispersion of artificial caesium-134 and -137 in the western North Pacific one month after the Fukushima accident. Geochemical Journal; 46: 1-9.
• Munthali, MW, Johan, E, Aono, H, Matsue, N. 2015. Cs+ and Sr2+ adsorption selectivity of zeolites in relation to radioactive decontamination. Journal of Asian Ceramic Societies; 3: 245-250.
• Zhang, L, Wei, J, Zhao, X, Li, F, Jiang, F, Zhang, M, Cheng, X. 2016. Competitive adsorption of strontium and cobalt onto tin antimonite. Chemical Engineering Journal; 285: 679-689.
• Hasan, S, Iasir, ARM, Ghosh, TK, Gupta, BS, Prelas, MA. 2019. Characterization and adsorption behavior of strontium from aqueous solutions onto chitosan-fuller’s earth beads. Healthcare; 7: 52-70.
• Burger A, Lichtscheidl I. 2019. Strontium in the environment: Review about reactions of plants towards stable and radioactive strontium isotopes. Science of The Total Environment; 653: 1458-1512.
• Pathak, P. 2017. An assessment of strontium sorption onto bentonite buffer material in waste repository. Environmental Science and Pollution Research; 24: 8825–8836.
• Sureda, R, Martinez-Llado, X, Rovira, M, Pablo, JD, Casas, I, Gimenez, J. 2010. Sorption of strontium on uranyl peroxide: Implications for a high-level nuclear waste repository. Journal of Hazardous Materials; 181: 881–885.
• Lee, HS, Lee, J, Yoon, B, Yim, Y, Choi, I, Cho, H, Lee, S, Baik, K, Park, JH, Huh, YJ. 2013. Removal characterization of 133Cs and 127I in a water treatment process using a laboratory scale experiment. Water Supply; 13(5): 1289–1294.
• Rahman, ROA, Ibrahium, HA, Hung, YT. 2011. Liquid radioactive wastes treatment: A review. Water; 3: 551–565.
• Tayyebi, A, Outokesh, M, Moradi, S, Doram, A. 2015. Synthesis and characterization of ultrasound assisted ‘‘graphene oxide–magnetite” hybrid. and investigation of its adsorption properties for Sr(II) and Co(II) ions. Applied Surface Science; 353: 350–362.
• Chen, C, Hu, J, Shao, D, Li, J, Wang, X. 2009. Adsorption behavior of multiwall carbon nanotube/iron oxide magnetic composites for Ni(II) and Sr(II). Journal of Hazardous Materials; 164: 923–928.
• Cicek, E, Cojocaru, C, Zakrzewska-Trznadel, G, Harasimowicz, M, Miskiewicz, A. 2012. Response surface methodology for the modeling of 85 Sr adsorption on zeolite 3A and pumice. Environmental Technology; 33(1): 51–59.
• Cicek, E, Cojocaru, C, Zakrzewska-Trznadel, G, Jaworska, A, Harasimowicz, M. 2008. Response surface methodology for cobalt removal from aqua solutions using Isparta pumice and zeolite 4A adsorbents. Nukleonika; 53(S2): 121-128.
• Cicek, E. 2009. Response surface methodology for cobalt removal from aqua solutions using nevsehir and kayseri pumice adsorbents. Asian Journal of Chemistry; 21(7): 5727-5736.
• Myers, RH, Montgomery, DC. Response Surface Methodology: Process and Product Optimization Using Designed Experiments; John Wiley &Sons: New York. 2 ed. 2002.
• Akhnazarova, S, Kafarov, V. Experiment Optimization in Chemistry and Chemical Engineering; Mir Publishers: Moscow. 1982.
• Khayet, M, Cojocaru, V, Zakrzewska-Trznadel, G. 2008. Response surface modelling and optimization in pervaporation. Journal of Membrane Science; 321: 272–283.
• Cojocaru, C, Macoveanu, M. 2003. Modeling and Optimization of Diesel Oil Spill Removal from Water Surface Using Shredded Strips of Polypropylene as the Sorbent. Environmental Engineering and Management Journal; 2(2): 145-154.
• Le, MH, Behera, SK, Park, HS. 2010. Optimization of operational parameters for ethanol production from Korean food waste leachate. International Journal of Environmental Science & Technology; 7: 157–164.
• Chauhan, B, Gupta, R. 2004. Application of statistical experimental design for optimization of alkaline protease production from Bacillus sp. RGR-14. Process Biochemistry; 39(12): 2115–2122.