Investigation of a basic dye adsorption from aqueous solution onto raw and pre-treated sepiolite surfaces

Eren E., Afsin B.

DYES AND PIGMENTS, cilt.73, sa.2, ss.162-167, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 2
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.dyepig.2005.11.004
  • Dergi Adı: DYES AND PIGMENTS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.162-167
  • Anahtar Kelimeler: thermodynamics, cationic dye, charge reversal, adsorption isotherm, crystal violet, sepiolite, METHYLENE-BLUE, MODEL-CALCULATIONS, PORE STRUCTURE, MONTMORILLONITE, EXCHANGE, CATIONS, CLAY, SOILS
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

The temperature, pH and ionic strength effects on the adsorption of crystal violet (CV) by raw, base activated and Al-saturated sepiolite samples were studied. Al-saturated sepiolite has relatively weak ability for CV adsorption compared to the raw clay, whereas the highest adsorption observed for the base activated sepiolite may be due to the Na+ ions replaced part of Mg2+ located at the edges of the channels. Different thermodynamic parameters for raw and pre-treated sepiolite samples indicate the adsorption of the dye component on a non-uniform surface. (c) 2005 Elsevier Ltd. All rights reserved.