Hasan TÜRE, Evren TUNCA, Kader TERZİOĞLU

Aljinat/Perlit Parçacıkların Karakterizasyonu

Bu çalışmada iyonik jelasyon yöntemi kullanılarak elde edilen aljinat/perlit kompozit parçacıkların karaterizasyonu ve sulu çözeltiden Pb (II) ve Ni (II) iyonlarının uzaklaştırılmasında kullanılabilirliği test edilmiştir. Parçacıkların adsorpsiyon kapasitesine çözeltinin pH’nın, çalkalama süresinin, başlangıç metal iyon miktarının ve perlit konsantrasyonunun etkisi kesiklik sistemde araştırılmıştır. Test edilen ağır metal iyonlarının parçacıklardan desorpsiyonu ve yeniden kullanılabilirliği de araştırılmıştır. Optik mikroskop analizi ıslak ve kuru parçacıkların çaplarını sırasıyla 2.5-2.8 mm ve 1.8- 1.9 mm olduğunu göstermiştir. Perlit eklenmesi parçacıkların şişme değerlerini azaltmıştır. SEM ve SEM-EDX analizi perlitin plaka şeklinde olduğunu ve ağırlıklı olarak silikadan oluştuğunu göstermiştir. SEM-EDX analizi ayrıca aljinat/perlit parçacıkların C, O, Na, Al, Si, ve K içerdiğini belirtmiştir. XRD analizi perlitin amorf karakterde olduğunu ve aljinat içerisinde dağıldığını göstermiştir. TGA analizi perlitin parçacıkların termal özelliklerini geliştirdiğini ortaya koymuştur. Parçacıklar tarafından Pb (II) ve Ni (II) giderimi için optimum pH değeri 6 ila 7 arasında değişmektedir. Ağırlıkça perlit/aljinat oranı 2 olduğunda parçacıkların adsorpsiyon verimi maksimuma ulaşmıştır.

Characterization of Alginate/Perlite Particles

In this study alginate/perlite composite particles obtained by ionic gelation method were characterized and their usability on the removal of Pb (II) and Ni (II) ions from aqueous solutions was tested. The effects of pH, contact time, initial metal ion level and perlite concentration on the adsorption capacity of particles were investigated in a batch system. Desorption of tested heavy metal ions from particles and reusability of particles were also investigated. Optical microscopy analysis showed that diameters of wet and dried particles were between 2.5-2.8 mm and 1.8-1.9 mm, respectively. Incorporation of perlite decreased the swelling degree of the particles. SEM and SEM-EDX analysis indicated that perlite appeared as thin plates and mainly composed of silica. SEM-EDX also indicated that alginate/perlite particles were composed of C, O, Na, Al, Si, and K. XRD analysis indicated that perlite had amorphous structure and distributed in the alginate matrix. According to TGA analysis, perlite improved the thermal properties of particles. The optimum pH value varied between 6 and 7 for the removal of Pb (II) and Ni (II). The adsorption efficiency of particles reached maximum level while the perlite/alginate (wt. /wt.) ratio was 2.

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Pandey, A., Bera, D., Shukla, A., Ray, L. 2007. Studies on Cr (VI), Pb (II) and Cu (II) adsorption–desorption using calcium alginate as biopolymer, Chemical Speciation and Bioavailability, 19(1), 17-24.
Chen, D., Li, W., Wu, Y., Zhu, Q., Lu, Z., Du, G. 2013. Preparation and characterization of chitosan/montmorillonite magnetic particles and its application for the removal of Cr (VI), Chemical Engineering Journal, 221, 8-15.
Mathialagan, T., Viraraghavan, T. 2002. Adsorption of cadmium from aqueous solutions by perlite, Journal of Hazardous Materials, 94(3), 291-303
Ghassabzadeh, H., Mohadespour, A., TorabMostaedi, M., Zaheri, P., Maragheh, M., Taheri, H. 2010. Adsorption of Ag, Cu and Hg from aqueous solutions using expanded perlite, Journal of hazardous materials, 177(1), 950-955.
Ngomsik, A., Bee, A., Siaugue, J., Talbot, D., Cabuil, V., Cote, G. 2009. Co (II) removal by magnetic alginate beads containing Cyanex 272, Journal of hazardous materials, 166(2), 1043-1049.
Bohli, T., Villaescusa I., Ouederni, A.2013. Comparative study of bivalent cationic metals adsorption Pb (II), Cd (II), Ni (II) and Cu (II) on olive stones chemically activated carbon, Chemical Engineering & , Process Technologhy, 4 (4), 1-7.
Pandey, A., Bera, D., Shukla, A., Ray, L. 2007. Studies on Cr (VI), Pb (II) and Cu (II) adsorption–desorption using calcium alginate as biopolymer, Chemical Speciation and Bioavailability, 19(1), 17-24.
Oladipo, A.A., Gazi, M. 2015. Nickel removal from aqueous solutions by alginate-based composite beads: Central composite design and artificial neural network modeling, Journal of Water Process Engineering, 8, 81-91.
Ture, H., Blomfeldt, T.O.J., Gallstedt, M., Hedenqvist, M.S. 2012. Properties of wheatgluten/montmorillonite nanocomposite films obtained by a solvent-free extrusion process, J Polym Environ, 20, 1038-1045.
Cheong, M., Zhitomirsky, I. 2008. Electrodeposition of alginic acid and composite films, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 328(1), 73-78
Erdogan, S. 2014. Properties of ground perlite geopolymer mortars, Journal of Materials in Civil Engineering, 27(7), 1-10.
[26] Rahim, S.N.A., Hamzah, F., Hamid, K.H.K., Rodhi, M.N.M., Musa, M., Edama, N.A. Enzymes encapsulation within calsium alginate-clay beads:Characterization and application for cassava slurry saccharification, Procedia Engineering, 68 (2013), 411-417.
Celik, A.G., Kilic, A.M., Cakal, G.O. 2013. Expanded perlite aggregate characterization for use as a lightweight construction raw material, Physicochemical Problems of Mineral Processing, 49(2), 689-700.
Yan, H., Feng, Y., Hu, W., Cheng, C., Liu, R., Wang, C., Li, J., Lin, Q. 2013. Preparation and evaluation of alginate-chitosan-bentonite based beads for the delivery of pesticides in controlled-release formulation, Asian Journal of Chemistry, 25(17), 9936.
Mahdavinia, G.R., Rahmani, Z., Karami, S., Pourjavadi, A. 2014. "Magnetic/pH-sensitive κ- carrageenan/sodium alginate hydrogel nanocomposite beads: preparation, swelling behavior, and drug delivery", Journal of Biomaterials Science, Polymer Edition, 25(17), 1891-1906.
Lagoa, R., Rodrigues, J. 2009. Kinetic analysis of metal uptake by dry and gel alginate particles,Biochemical Engineering Journal, 46(3), 320- 326.
Sarı, A., Şahinoğlu, G., Tüzen, M. 2012. Antimony (III) adsorption from aqueous solution using raw perlite and Mn-modified perlite: equilibrium, thermodynamic, and kinetic studies, Industrial & Engineering Chemistry Research, 51(19), 6877-6886.
Hasan, S., Krishnaiah, A., Ghosh, T., Viswanath, D., Boddu, V., Smith, E. 2003. Adsorption of Chromium (VI) on Chitosan Coated Perlite, Separation science and technology, 38(15), 3775-3793.
Hasan, S., Krishnaiah, A., Ghosh, T.K., Viswanath, D.S. 2006. Adsorption of divalent cadmium (Cd (II) from aqueous solution onto chitosan-coated perlite beads, Ind.Eng.Chem.Res 45, 5066-5077.
Zhang, J., Xu, S., Du, Z., Ren, K. 2011. Preparation and characterization of montmorillonnite/tamarind gum/sodium alginate composite gel beads, Journal of Composite Materials, 45(3), 295-305.
Shawky, H. 2011. Improvement of water quality using alginate/montmorillonite composite beads, Journal of Applied Polymer Science, 119(4), 2371-2378.
Hritcu, D., Dodi, G., Silion, M., Popa, N., Popa, M. 2011. Composite magnetic chitosan particles: In situ preparation and characterization, Polymer bulletin, 67(1), 177-186.
Wang, P., Yan, T., Wang, L. 2013. Removal of Congo red from aqueous solution using magnetic chitosan composite microparticles, Bioresources, 8(4), 6024-6043.
Lazaridis, N., Charalambous, C. 2005. Sorptive removal of trivalent and hexavalent chromium from binary aqueous solutions by composite alginate–goethite beads, Water research, 39(18), 4385-4396.
Donia, A.M., Atia, A.A., Elwakeel, K. 2008. Selective separation of mercury (II) using magnetic chitosan rein modified with Schiff’s base derived from thiourea and glutaraldehyde, 151, 372-379.
Ely, A., Baudu, M., Basly, J.-P., Kankou, M.O.S.A.O. 2009. Copper and nitrophenol pollutants removal by Na-montmorillonite/alginate microcapsules, Journal of hazardous materials, 171(1), 405-409.
Gotoh, T., Matsushima K., Kikuchi, K.-I. 2004. Adsorption of Cu and Mn on covalently crosslinked alginate gel beads, Chemosphere, 55, 57- 64.
Yu, K., Ho, J., McCandlish, E., Buckley, B., Patel, R., Li, Z., Shapley, N.C, 2013. Copper ion adsorption by chitosan nanoparticles and alginate micro particles for water purification applications, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 425, 31-41.
Li, N., Bai, R. 2006. Development of chitosanbased granular adsorbents for enhanced and selective adsorption performance in heavy metal removal, Water Science &Technology, 54(10), 103-113.
Sag, Y., Nourbakhsh, Z., Aksu, Z., Kutal, T. 1995.Comparison of Ca-alginate and Immobilized Z. ramigera as sorbents for Copper (II) removal, Process Biochemistry, 30(2), 175- 181.
Bayramoglu, G., Tuzun, I., Celik, G., Yilmaz, M., Arica, M.Y. 2006. Biosorption of mercury (II), cadmium (II) and lead (II) ions from aqueous system by microalgae Chlamydomonasreinhardtii immobilized in alginate beads, 81, 35-43.
Kacar, Y., Arpa, C., Tan, S., Denizli, A., Genc, Ö., Arica, M.Y. 2002. Biosoption of Hg (II) and Cd (II) from aqueous solutions: comparison of biosorptive capacity of alginate and immobilizd live and heat inactivated Phanerochaetechrysosporium, Process Biochemistry, 37, 601-610.
Ngah, W.W., Endud, C., Mayanar, R. 2002. Removal of copper (II) ions from aqueous solution onto chitosan and cross-linked chitosan beads, Reactive and Functional Polymers, 50(2), 181-190.
Idris, A., Ismail, N., Hassan, N., Misran, E., Ngomsik, A. 2012. Synthesis of magnetic alginate beads based on maghemite nanoparticles for Pb (II) removal in aqueous solution, Journal of Industrial and Engineering Chemistry, 18(5), 1582-1589.
Tirtom, V., Dinçer, A., Becerik, S., Aydemir, T., Çelik, A. 2012. Comparative adsorption of Ni (II) and Cd (II) ions on epichlorohydrin crosslinked chitosan–clay composite beads in aqueous solution, Chemical Engineering Journal, 197, 379-386.
Zhou, L., Wang, Y., Liu, Z., Huang, Q. 2009. Characteristics of equilibrium, kinetics studies for adsorption of Hg (II), Cu (II), and Ni (II) ions by thiourea-modified magnetic chitosan particles, Journal of Hazardous Materials, 161(2), 995-1002.
Li, X., Li, Y., Ye, Z. 2011. Preparation of macroporous bead adsorbents based on poly (vinyl alcohol)/chitosan and their adsorption properties for heavy metals from aqueous solution, Chemical Engineering Journal, 178, 60 - 68.