Preparation of rice hull-based activated carbon with ammonium nitrate

KILIÇ İ., BAYRAK Y., Topallar H., Karagoz B.

Asian Journal of Chemistry, cilt.25, sa.9, ss.4911-4916, 2013 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 9
  • Basım Tarihi: 2013
  • Doi Numarası: 10.14233/ajchem.2013.14141
  • Dergi Adı: Asian Journal of Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4911-4916
  • Anahtar Kelimeler: Activated carbon, Ammonium nitrate, Pore volume, Pore width, Rice hull, Surface area
  • Trakya Üniversitesi Adresli: Evet

Özet

The present study deals with the preparation of rice hull-based activated carbon with ammonium nitrate. The obtained carbon was activated at temperatures between 400 and 900 °C. The rice hull-activated carbon presented a BET surface area of 456.77 m2 g-1 and a pore volume of 0.2406 cm3 g-1 at 600 °C. The adsorption and desorption average pore widths by BET method were found as 2.727 and 2.725 nm, respectively, whereas the Barret-Joyner-Halenda (BJH) adsorption and desorption average pore widths were 4.015 and 4.446 nm, respectively. Thus, it was found that rice hull-based activated carbon consisted of mesopores predominantly. These experimental results indicated the potential use of rice hull as a precursor in the activated carbon preparation process with ammonium nitrate. Moreover, the adsorption-desorption isotherm and the adsorption potential of the activated carbon that prepared at the optimum conditions were evaluated.