ZEOLITE SYNTHESIS BY ALKALI FUSION METHOD USING TWO DIFFERENT FLY ASHES DERIVED FROM TURKISH THERMAL POWER PLANTS

Year 2020, Volume: 59 Issue: 1, 7 - 14, 01.03.2020

Soner Top Hüseyin Vapur

https://doi.org/10.30797/madencilik.705486

Cited By: 1

Abstract

In this study, Faujasite (Na-LSX) (3.5(Ca0.3)3.5(Na0.6)3.5(Mg0.1)Al7Si17O48•32(H2O)) type zeolites
and Ca-Filipsite (CaK0.6Na0.4Si5.2Al2.8O16•6(H2O)) type zeolites were produced from Sugözü
Thermal Power Plant and Çatalağzı Thermal Power Plant fly ashes by alkali fusion method
followed by water leaching, respectively. In these methods, fly ashes and sodium hydroxide
(NaOH) were mixed in certain proportions and sintered at 600 °C in ash furnace. Then, zeolites
were obtained from the ground materials after water leaching and solid/liquid separation,
respectively. Cation Exchange Capacity (CEC), X-Ray Diffraction (XRD), Scanning Electron
Microscopy (SEM), Fourier-Transform Infrared Spectroscopy (FTIR), X-Ray Fluorescence (XRF)
and Atomic Absorption Spectrometer (AAS) analyses were used to characterize the synthesized
zeolites. The zeolites synthesized with Sugözü fly ashes in a ratio of 1:2 had 136.93 meq/100 g
CEC, whereas the CEC of synthesized zeolite from Çatalağzı fly ashes was found to be 247.88
meq/100 g. As a result, zeolites, which can be used as wastewater treatment agent, energy
storage material, catalyst and separator, were synthesized by using 2 different Class F fly ash.

Keywords

Zeolite, Faujasite, Na-LSX, Phillipsite, Synthesis

TÜRK TERMİK SANTRALLERİNDEN İKİ FARKLI UÇUCU KÜL KULLANARAK ALKALİ YAKMA METODUYLA ZEOLİT SENTEZİ

Abstract

Bu çalışmada, Sugözü termik santrali uçucu küllerinden sonrasında su liçi ile desteklenen bazik
füzyon tekniği kullanılarak fojasit (Na-LSX) (3.5(Ca0.3)3.5(Na0.6)3.5(Mg0.1)Al7Si17O48•32(H2O)) türü,
Çatalağzı uçucu küllerinden ise aynı tekniği kullanarak Ca-Filipsit (CaK0.6Na0.4Si5.2Al2.8O16•6(H2O))
türü zeolitler sentezlenmiştir. Bu yöntemlerde öncelikle yüksek sıcaklıkta kül fırınında uçucu küller
ve sodyum hidroksit (NaOH) belirli oranlarda karıştırılarak 600 °C’de sinterlenmiş sonrasında
öğütülen malzemelerden saf suda liç işlemi ile zeolitler elde edilmiştir. Katyon Değiştirme
Kapasitesi (KDK), X-Işını Kırınımı (XRD), Taramalı Elektron Mikroskobu (SEM), Fourier
Dönüşümlü Kızılötesi Spektroskopisi (FTIR), X-Işını Fluoresans (XRF) ve Atomik Adsorpsiyon
Spektrometresi (AAS) analizleri ile sentezlenen zeolitler karakterize edilmiştir. Sugözü uçucu
külleri ile (1:2 oranda) sentezlenen zeolitler 136,93 meq/100 g KDK’ne sahipken aynı oranda
Çatalağzı uçucu külleri ile sentezlenen zeolitlerin 247,88 meq/100 g KDK’ne sahip oldukları
belirlenmiştir. Sonuç olarak F sınıfı 2 ayrı uçucu kül kullanarak atıksu arıtıcı, enerji depolayıcı,
katalist ve separator olarak kullanılabilecek zeolitler sentezlenmiştir.

Keywords

Zeolit, Fojasit, Na-LSX, Filipsit, Sentez

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