Cystoseira barbata İle Toryum Biyosorpsiyonu

Abstract

Bu çalışmada, Cystoseira barbata’nın biyosorbent olarak kullanılmasıyla, sulu çözeltide bulunan Th (IV) radyoaktif iyonlarının giderilmesine çalışılmıştır. Kesikli ekstraksiyon yöntemi uygulanmış ve biyosorpsiyona pH, süre ve derişim etkileri incelenmiştir. Tutunma miktarının pH değişiminden pek etkilenmediği belirlenmiştir. Süre denemeleri sonucunda ise,  biyosorpsiyon işleminin ilk 150 dakika içerisinde dengeye ulaştığı görülmüştür.  Derişim denemeleri sonucunda elde edilen verilere, Langmuir ve Freundlich izoterm modelleri uygulanmış, q_m değeri 39,45 mg/g olarak bulunmuştur. Adsorpsiyon denemeleri sonucunda, adsorpsiyonun Freundlich izoterm modeline daha çok uyduğu belirlenmiştir. Yapılan SEM ve FTIR analizleri ile radyoaktif maddenin alg yüzeyinde meydana getirdiği değişiklikler gözlenmiş ve Th (IV) radyoaktif iyonlarının alg yüzeyinde hangi gruplara tutunduğu belirlenmiştir. 

Keywords

• cystoseira barbata,toryum,biyosorpsiyon

Biosorption of radioactive thorium by Cystoseira barbata

Abstract

In this study, it was tried to remove Th (IV) radioactive ions in aqueous solution by using Cystoseira barbata. Batch extraction method was applied and pH, contact time and concentration effects were investigated. It was determined that the amount of removal was not affected by pH change. As a result of time effects, it was observed that the biosorption process reached equilibrium with in the first 150 minutes. Langmuir and Freundlich isotherm models were applied and qm value was found to be 39,45 mg/g. The Freundlich isotherm model showed slightly stronger correlation than Langmuir isotherm. SEM and FTIR analysis were performed to find out the changes on the surface of algae loaded with Th (IV) radioactive ions and the groups Th (IV) attached on algae surface.

Keywords

• Cystoseira barbata,Th,biosorption

References

1. [1] Moghaddam, M.R., Fatemi,S. ve Keshtkar A. 2013. Adsorption of lead (Pb2+) and uranium (UO22+) cations by brown algae; experimental and thermodynamic modeling. Chemical Engineering Journal, cilt 231, s. 294-303. https://doi.org/10.1016/j.cej.2013.07.037
2. [2] Ünak, P., Radyoaktif atıkların Yönetimi. http://euatik.ege.edu.tr/files/radyoaktifatiklarinyonetimi.pdf, 2011.
3. [3] Bozkurt, S., Molu, Z., Cavas, L., ve Merdivan, M. 2011. Biosorption of uranium (VI) and thorium (IV) onto Ulva gigantea (Kützing) bliding: discussion of adsorption isotherms, kinetics and thermodynamic. Journal of Radioanalytical and Nuclear Chemistry, cilt 288(3), s. 867-874.
4. [4] Keshtkar, A.R., Mohammadi, M., ve Moosavian, M.A. 2015. Equilibrium biosorption studies of wastewater U(VI), Cu(II) and Ni(II) by the brown alga Cystoseira indica in single, binary and ternary metal systems. Journal of Radioanalytical and Nuclear Chemistry, cilt 303(1), s. 363-376.
5. [5] Aytas, S., Gunduz, E. ve Gok, C. 2014. Biosorption of Uranium Ions by Marine Macroalga Padina pavonia. CLEAN – Soil, Air, Water, cilt 42(4), s. 498-506.
6. [6] Altunyaldız, A., Başlak, C., Arslan, G. 2018. CdSe Nanokristalleri ile Mikrokapsül Hazırlama ve Cr(VI) Gideriminde Kullanılması. Dokuz Eylül Üniversitesi-Mühendislik Fakültesi, cilt 20(60), s. 711-724.
7. [7] Wang, J. ve Chen, C. 2009. Biosorbents for heavy metals removal and their future. Biotechnology Advances, cilt 27(2), s. 195-226. https://doi.org/10.1016/j.biotechadv.2008.11.002
8. [8] Farooq, U., Kozinski, J.A., Khan, M.A. ve Athar, M. 2010. Biosorption of heavy metal ions using wheat based biosorbents – A review of the recent literature. Bioresource Technology, cilt 101(14), s. 5043-5053. https://doi.org/10.1016/j.biortech.2010.02.030

9. [9] Ghasemi, M., Keshtkar, A.R., Dabbagh, R. ve Safdari S.J. 2011. Biosorption of uranium(VI) from aqueous solutions by Ca-pretreated Cystoseira indica alga: Breakthrough curves studies and modeling. Journal of Hazardous Materials, cilt 189(1), s. 141-149. doi.org/10.1016/j.jhazmat.2011.02.011
10. [10] Kratochvil, D. ve Volesky, B. 1998. Advances in the biosorption of heavy metals. Trends in Biotechnology, cilt 16(7), s. 291-300. https://doi.org/10.1016/S0167-7799(98)01218-9
11. [11] Pavasant, P., Apiratikul, R., Sungkhum, V., Suthiparinyanont P., Wattanachira, ve S., Marhaba, T.F. 2006. Biosorption of Cu2+, Cd2+, Pb2+, and Zn2+ using dried marine green macroalga Caulerpa lentillifera. Bioresource Technology, cilt 97(18), s. 2321-2329. https://doi.org/10.1016/j.biortech.2005.10.032
12. [12] Gok, C. ve Aytas, S. 2014. Chapter 16 - Biosorption of Uranium and Thorium by Biopolymers, in The Role of Colloidal Systems in Environmental Protection, M. Fanun, Editor. Elsevier: Amsterdam, s. 363-395. https://doi.org/10.1016/B978-0-444-63283-8.00016-8
13. [13] McMullan, G., Meehan, C., Conneely, A., Kirby, N., Robinson, T., Nigam, P., Banat, I., Marchant, R., ve Smyth, W. 2001. Microbial decolourisation and degradation of textile dyes. Applied Microbiology and Biotechnology, cilt 56(1-2), s. 81-87.
14. [14] Abd-El-Kareem, M.S. ve Taha, H.M. 2012. Decolorization of Malachite green and Methylene blue by two microalgal species. International Journal of chemical and environmental engineering, cilt 3(5), s. 297-302.
15. [15] Ariff, A.B., Mel, M., Hasan, M.A. ve Karim, M.I.A. 1999. The kinetics and mechanism of lead (II) biosorption by powderized Rhizopus oligosporus. World Journal of Microbiology and Biotechnology, cilt 15(2), s. 291-298.
16. [16] Vieira, R. H. S. F. ve Volesky B. 2010. Biosorption: a solution to pollution? International Microbiology, cilt 3, s. p. 17-24.
17. [17] Schiewer, S. ve Wong, M.H. 2000. Ionic strength effects in biosorption of metals by marine algae. Chemosphere, cilt 41(1), s. 271-282. https://doi.org/10.1016/S0045-6535(99)00421-X
18. [18] Malik, D.J., Streat, M., ve Greig, J. 1999. Characterization and Evaluation of Seaweed-Based Sorbents for Treating Toxic Metal-Bearing Solutions. Process Safety and Environmental Protection, cilt 77(4), s. 227-233.
19. [19] Masoud Riazi, A.R.K., Mohammad Ali Moosavian, Batch and continuous fixed-bed column biosorption of thorium(IV) from aqueous solutions: equilibrium and dynamic modeling. Journal of Radioanalytical and Nuclear Chemistry, 2014. 301(2): p. 493–503.
20. [20] Khani, M.H., Keshtkar, A.R., Ghannadi, M., ve Pahlavanzadeh, H. 2008. Equilibrium, kinetic and thermodynamic study of the biosorption of uranium onto Cystoseria indica algae. Journal of Hazardous Materials, cilt 150(3), s. 612-618. https://doi.org/10.1016/j.jhazmat.2007.05.010
21. [21] Vogel, M., Günther, A., Rossberg, A., Li, B., Bernhard, G., ve Raff, J. 2010. Biosorption of U(VI) by the green algae Chlorella vulgaris in dependence of pH value and cell activity. Science of The Total Environment, cilt 409(2), s. 384-395. https://doi.org/10.1016/j.scitotenv.2010.10.011
22. [22] Wang, J.-s., Hu, X-J., Liu, Y-g., Xi, S-b., ve Bao, Z-l. 2010. Biosorption of uranium (VI) by immobilized Aspergillus fumigatus beads. Journal of Environmental Radioactivity, cilt 101(6): p. 504-508. https://doi.org/10.1016/j.jenvrad.2010.03.002.
23. [23] Picardo, M.C., Melo Ferreira, A.C., ve Augusto da Costa, A. C. 2006. Biosorption of radioactive thorium by Sargassum filipendula. Applied Biochemistry and Biotechnology, cilt 134(3), s. 193-206.
24. [24] Cecal, A., Humelnicu, D., Rudic, V., Cepoi, L., Ganju, D., ve Cojocari, A. 2012. Uptake of uranyl ions from uranium ores and sludges by means of Spirulina platensis, Porphyridium cruentum and Nostok linckia alga. Bioresource Technology, cilt 118, s. 19-23. https://doi.org/10.1016/j.biortech.2012.05.053
25. [25] Riazi, M., Keshtkar, A.R., ve Moosavian, M.A. 2016. Biosorption of Th(IV) in a fixe d-bed column by Ca-pretreated Cystoseira indica. Journal of Environmental Chemical Engineering, cilt 4(2), s. 1890-1898. https://doi.org/10.1016/j.jece.2016.03.017
26. [26] Keshtkar, A.R. ve Hassani, M.A. 2014. Biosorption of thorium from aqueous solution by Ca-pretreated brown algae Cystoseira indica. Korean Journal of Chemical Engineering, cilt 31(2), s. 289-295.
27. [27] Langmuir, I. 1918. The adsorption of gases on plane surface of glass, mica and platinum. Journal of the American Chemical Society, cilt 40 (9), s. 1361-1403. DOI: 10.1021/ja02242a004
28. [28] Freundlich, H. 1906. Over The Adsorption in Solution. Journal of Physical Chemistry, cilt 57, s. 385.
29. [29] Wang, J. 2002. Biosorption of copper(II) by chemically modified biomass of Saccharomyces cerevisiae. Process Biochemistry, cilt 37(8), s. 847-850. https://doi.org/10.1016/S0032-9592(01)00284-9
30. [30] Sar, P., ve D'Souza, S.F. 2002. Biosorption of thorium (IV) by a Pseudomonas biomass. Biotechnology Letters, cilt 24(3), s. 239-243.
31. [31] Gavrilescu, M. 2004. Removal of Heavy Metals from the Environment by Biosorption. Engineering in Life Sciences, cilt 4(3), s. 219-232. https://doi.org/10.1002/elsc.200420026.
32. [32] Abbasizadeh, S., Keshtkar, A.R.. ve Mousavian, M.A. 2013. Preparation of a novel electrospun polyvinyl alcohol/titanium oxide nanofiber adsorbent modified with mercapto groups for uranium(VI) and thorium(IV) removal from aqueous solution. Chemical Engineering Journal, cilt 220, s. 161-171. https://doi.org/10.1016/j.cej.2013.01.029
33. [33] Tsezos, M. ve Volesky, B. 1981. Biosorption of uranium and thorium. Biotechnology and Bioengineering, cilt 25 (3), s. 583-604. https://doi.org/10.1002/bit.260230309
34. [34] Riazi, M., Keshtkar, A.R., ve Moosavian, M. A. 2014. Batch and continuous fixed-bed column biosorption of thorium(IV) from aqueous solutions: equilibrium and dynamic modeling. Journal of Radioanalytical and Nuclear Chemistry, cilt 301(2), s. 493-503.
35. [35]. Lodeiro P., Barriada, Herrero, J.L., ve Sastre De Vicente, M.E. 2006. The marine macroalga Cystoseira baccata as biosorbent for cadmium (II) and lead (II) removal: kinetic and equilibrium studies. Environmental Pollution, cilt 142, s. 264–273.
36. [36]. Davis, T.A., Volesky, B., ve Mucci, A. 2003. A review of the biochemistry of heavy metal biosorption by brown algae. Water Resource, cilt 37, s. 4311-4330