Influence of the exchangeable cations on SO2 adsorption capacities of clinoptilolite-rich natural zeolite

SAKIZCI M., ERDOĞAN ALVER B., YÖRÜKOĞULLARI E.

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY, vol.17, no.4, pp.739-745, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17 Issue: 4
  • Publication Date: 2011
  • Doi Number: 10.1007/s10450-011-9352-4
  • Journal Name: ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.739-745
  • Keywords: Adsorption, Clinoptilolite, Sulphur dioxide, XRD, FT-IR, SULFUR-DIOXIDE, MORDENITE, ETHYLENE, METHANE, THRACE, AREA
  • Anadolu University Affiliated: Yes

Abstract

The sulfur dioxide adsorption on clinoptilolite-rich tuff from Bigadi double dagger region of Western of Turkey and its modified forms (Na+, K+, Ca2+ and Mg2+) have been studied at 273 K and 293 K up to 100 kPa. The structural properties of clinoptilolites were studied by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR). The quantitative XRD analysis demonstrated that the Natural-B sample is mainly constituted by clinoptilolite (80-85%) with minor contents of quartz (7-8%), feldspar (5-6%) and mica-illit (4-5%). It was found out that the adsorption capacity and the affinity of SO2 with clinoptilolite samples depended mainly on the type of exchanged cations and decreased as Na-B > K-B > Mg-B > Natural-B > Ca-B for both temperature. These results show that clinoptilolite-rich zeolites are considered potentially good adsorbents for SO2 removal.