Adsorption characteristics of benzaldehyde, sulphanilic acid, and p-phenolsulfonate from water, acid, or base solutions onto activated carbon cloth

Duman O., Ayranci E.

SEPARATION SCIENCE AND TECHNOLOGY, cilt.41, sa.16, ss.3673-3692, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 16
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1080/01496390600915072
  • Dergi Adı: SEPARATION SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3673-3692
  • Anahtar Kelimeler: adsorption, competitive adsorption, activated carbon cloth, benzaldehyde, sulphanilic acid, p-phenolsulfonate, AQUEOUS-SOLUTIONS, WASTE-WATERS, ELECTROSORPTION, REMOVAL, IONS, ELECTRODES, BEHAVIORS, CADMIUM, PHENOL
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Adsorption of benzaldehyde (BA), sulphanilic acid (SA), and sodium salt of p-phenolsulfonic acid (p-PhS) from water, acid, or base solutions onto activated carbon cloth (ACC) was studied by in-situ UV-spectrophotometric method. Kinetics of adsorption was followed over 90 min and the data were fitted to first order rate law. The order of rate of adsorption was found to be BA > SA approximate to p-PhS in water, BA > p-PhS > SA in 1 M H2SO4 and BA > SA > > p-PhS in 0.1M NaOH. Competitive adsorptions of BA and SA from an equimolar mixture in 1M H2SO4 and of BA and p-PhS from an equimolar mixture in H2O were studied for exploring the possibilities of separation of binary mixtures. It was found that p-PhS was not adsorbed at all from 0.1 M NaOH solution. Adsorption isotherms of BA, SA, and p-PhS at 30 degrees C were derived and the data were fitted to the Langmuir and Freundlich models. The Freundlich model was found to represent the experimental data better than the Langmuir model.