SO2 adsorption on acid-treated bentonites from Turkey

Sakizci M., Alver B. E., Yorukogullari E.

CLAY MINERALS, cilt.46, sa.1, ss.73-83, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 46 Sayı: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1180/claymin.2011.046.1.73
  • Dergi Adı: CLAY MINERALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.73-83
  • Anahtar Kelimeler: adsorption, bentonite, SO2, thermal analysis, X-ray diffraction, ACTIVATED MONTMORILLONITE CLAY, CATALYTIC-ACTIVITY, SURFACE-AREAS, MINERALS, REMOVAL, GASES
  • Anadolu Üniversitesi Adresli: Evet

Özet

The adsorption of sulphur dioxide (SO2) on two bentonites from Unye, Turkey (Kavaktepe and Yemislitepe deposits - denoted below as BK and BY) and on forms treated with 1 and 2 M HCl solutions was investigated. The bentonite samples were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), thermogravimetry (TG-DTG), differential thermal analysis (DTA) and nitrogen adsorption methods. Adsorption capacities of SO2 were obtained using a standard volumetric apparatus at 293 K and 106 kPa. The SO2 adsorption capacity of the BY-2 (1.263 mmol g(-1)) sample was much greater than the BK-2 (1.126 mmol g(-1)) sample. As the concentration of acid increased, the specific surface areas and the uptakes of SO2 gas increased.