KALSİNASYONUN MG-FE HİDROTALSİT (FEHT) ÜZERİNDEKİ ETKİSİNİN ARAŞTIRILMASI

Adsorpsiyon, sularda bulunan kirleticilerin giderilmesinde etkili ve basit bir tekniktir. Bu çalışmadasularda bulunan kirletici anyonların giderilmesinde kullanılmak üzere yüksek yüzey alanlı özgün biradsorbentin geliştirilmesi ve karakterizasyonunun yapılması amaçlanmıştır. Bu doğrultuda çift tabakalıhidroksit olarak da bilinen Fe-Hidrotalsitin kalsinasyonu incelenmiştir. FeHT ve K-FeHT numuneleri; Xışını difraktogramı (XRD), termal gravimetrik analiz (TGA), diferansiyel taramalı kalorimetre (DSC),taramalı elektron mikroskopu (SEM), tane boyut analizi ve Brunauer-Emmett-Teller (BET) yüzey alanölçümleri ile karakterize edilmiştir. Kalsine FeHT’nin özgül yüzey alanının kalsinasyon sıcaklığı vesüresinden etkilendiği gözlemlenmiştir. Kalsinasyon sonucunca tabakalar arasındaki H2O, OH ve CO2içeriklerinin kaybolarak periklaz yapılarının oluştukları belirlenmiştir. Optimum kalsinasyon şartlarındaFeHT’nin yüzey alanı yaklaşık iki kat arttırılmıştır.

Investigation of the effect of Calcination on Mg-Fe Hydrotalcite (FeHT)

Adsorption is an effective and simple technique for removing contaminants in water. The development and characterization of the novel adsorbent with high surface area, which is effective for removal of arsenic from water, was targeted. For this purpose, calcination conditions on the structure of FeHT, known as LDH was investigated. Fe-Hydrotalcite (FeHT) and calcined Fe-Hydrotalcite (K-FeHT) were characterized by X-ray diffraction (XRD), thermogravimetry (TGA), differantial scanning calorimeter (DSC), scanning electron microscopy (SEM), particle size analysis and Brunauer-EmmettTeller (BET) spesific surface area analysis. It was observed that the specific surface area of K-FeHT significantly affected by the calcination temperature and time. As a result of the calcination, H2O, OH and CO2 contents between the layers were disappeared, and periclase structures was formed. The surface area was approximately doubled at optimum calcination conditions.

PDF

___

Auxilio, A. R., Andrews, P. C., Junk, P. C. ve Spiccia, L., 2009. The adsorption behavior of C.I. Acid Blue 9 onto calcined Mg–Al layered double hydroxides, Dyes anPigments, 81, 103–112.
Beyhan, M., 2003. Atık Çamurlar ve Doğal Malzemeler ile Sulardan Florür İyonu Gideriminin Araştırılması, Doktora Tezi, Fen Bilimleri Enstitüsü, İstanbul.
Bhuiyan, M. M. R., Lin, S.D. ve Hsiao, T.C., 2014. Effect of calcination on Cu–Zn loaded hydrotalcite catalysts for C–C bond formation derived from methanol, Catalysis Today, 226, 150–159.
Bruna, F., Pavlovic, I., Barriga, C., Cornejo, J. ve Ulibarri, M. A., 2006. Adsorption of pesticides carbetamide and metamitron on organohydrotalcite, Applied Clay Science, 33, 116–124.
Chetia, M., Goswamee, L. R., Goswamee, L. R., Banerjee, S., Chatterjee, S., Singh, L., Srivastava, R. B. ve Sarma, H. P., 2012. Arsenic removal from water using calcined Mg–Al layered double hydroxide, Clean Techn. Environ. Policy, 14, 21-27.
Elhalil, A., Qourzal, S., Mahjoubi, F. Z., Elmoubarki, R., Farnane, M., Tounsadi, H., Sadiq, M., Abdennouri, M. ve Barka, N., 2016. Defluoridation of groundwater by calcined Mg/Al layered double hydroxide, Emerging Contaminants, 2, 42-48.
Ferreira, O. P., Alves, O. L., Gouveia, D. X., Souza, A. G., Paiva, J. A. C. ve Filho, J., 2004. M., Thermal decomposition and structural reconstruction effect on Mg–Fe-based hydrotalcite compounds, Journal of Solid State chemistry, 177, 3058–3069.
Korkmaz, E., 2008. Eskişehir Yöresi Sepiyoliti’nin Zeta Potansiyellerinin Tayini, Yüksek Lisans, Anadolu Üniversitesi Fen Bilimleri Enstitüsü, Eskişehir.
Lins, L. C., Bugatti, V., Livi, S. ve Gorrasi, G., 2018.Phosphonium ionic liquid as interfacial agent of layered double hydroxide: Application to a pectin matrix, Carbohydrate Polymers, 182, 142-148.
Mahjoubi, F. Z., Khalidi, A., Abdennouri, M. ve Barka, N., 2017. Zn–Al layered double hydroxides intercalated with carbonate, nitrate, chloride and sulphate ions: Synthesis, characterisation anddye removal properties, Journal of Taibah University for Science, 11, 90-100.
Nalawade, P. ve Hirlekar, R., 2009. Layered Double Hydroxides: A review, Journal of Scientific and Industrial Research, 68, 267-272.
Nishida, S., Takesoe, S., Yamasaki, Y. ve Nakahira, A., 2004. Attempt of arsenic removal in wasted water by ınorganic materials, 14th International Conference on the Properties of Water and Steam, Japan.
Palmer, S. J., Frost, R. L. ve Nguyen, T., 2008. Hydrotalcites and their role in coordination of anions in Bayer liquors: Anion binding in layered double hydroxides, Coordination Chemistry Reviews, 253, 250–267.
Pecenyuk, S. I. 1999. The use of the pH at the point of zero charge for characterizing the properties of oxide hydroxides, Russian Chemical Bulletin, 48, 1017-1023.
Seida, Y. ve Nakano, Y., 2000. Removal of humic substances by layered double hydroxide containing iron, Water Research, 34, 1487-1494.
Seron, A. ve Delorme, F., 2008. Synthesis of layered double hydroxides (LDHs) with varying pH A valuable contribution to the study of Mg/Al LDH formation mechanism, Journal of Physics and Chemistry of Solids, 69, 1088–1090.
Theiss, F. L., Ayoko, G. A. ve Frost, R. L., 2013. Thermogravimetric analysis of selected layered double hydroxides, J Therm Anal Calorim, 112, 649-657.
Türk, T., Alp, İ. ve Boyraz, T., Investigation production of the high surface area double layer hydroxide production procedure with co-precipitation methods, International Black Sea Mining & Tunneling Symposium, 2-4 November 2016, Trabzon-Turkey, pp 471-477.
Ulibari, M. A., Labajos F. M., Rives, V., Trujillano, R., Kagunya, W. ve Jones, W., 1994. Comparative Study of the Synthesis and Properties of Vanadate-Exchanged Layered Double Hydroxides, Inorg. Chem., 33, 2592-2599.
Violante, A., Pucci, M., Cozzolino, V., Zhu, J. ve Pigna, M., 2009. Sorption/desorption of arsenate on/from Mg–Al layered double hydroxides: Influence of phosphate, Journal of Colloid and Interface Science, 333, 63–70.
Yang, L., Dadwhal, M., Shahrivari, Z., Ostwal, M., Liu, P. K. T., Sahimi, M. ve Tsotsis, T. T., 2006. Adsorption of arsenic on layered double hydroxides: Effect of the particle size, Ind. Eng. Chem. Res., 45, 4742-4751.
Yang, L., Shahrivari, Z., Liu, P. K. T., Sahimi, M. ve Tsostsis, T. T., 2005. Removal of trace levels of arsenic and selenium from aqueous solutions by calcined and uncalcined layered double hydroxides (LDH), Ind. Eng. Chem. Res., 44, 6804- 6815.
Yang, Y., Gao, N., Chu, W., Zhang, Y. ve Ma, Y., 2012. Adsorption of perchlorate from aqueous solution by the calcination product of Mg/(Al–Fe) hydrotalcitelike compounds, Journal of Hazardous Materials, 209– 210, 318– 325.
Yang, Z., Mo, Z. ve Niu, X., 2015. Perchlorate uptake from aqueous solutions by calcined Mg-Al layered double hydroxides, Separation Science and Technology, 50, 99–109.
Yi, H., Zhao, S., Tang, X., Ning, P., Wang, H. ve He, D., 2011. Influence of calcination temperature on the hydrolysis of carbonyl sulfide over hydrotalcite-derived Zn–Ni–Al catalyst, Catalysis Communications, 12, 1492–1495.
Wang, G. O., Wang, C. C. ve Chen, C. Y., 2005. Preparation and Characterization of Layered Double Hydroxides – PMMA Nanocomposites by Solution Polymerization, Journal of Inorganic and Organometallic Polymers and Materials, 15, 2, 239-251.