Column study on the adsorption of Cr(III) and Cr(VI) using Pumice, Yarikkaya brown coal, Chelex-100 and Lewatit MP 62


GÖDE F. , Moral E.

BIORESOURCE TECHNOLOGY, cilt.99, sa.6, ss.1981-1991, 2008 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 99 Konu: 6
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.biortech.2007.03.026
  • Dergi Adı: BIORESOURCE TECHNOLOGY
  • Sayfa Sayıları: ss.1981-1991

Özet

In the present study, adsorption of Cr(III) and Cr(VI) on Pumice (Pmc), Yarikkaya (YK) brown coal, Chelex-100, and Lewatit NIP 62 is examined at room temperature and at initial chromium concentration of 1.0 X 10(-3) mol/L. Column method was carried out as a function of pH, concentration of Cr(III) and Cr(VI) ions, volume of samples and flow rate. The experimental data were evaluated by Freundlich and Langmuir isotherm models. The dynamic breakthrough capacities of the adsorbents for Cr(III) and Cr(VI) were calculated. The maximum chromium sorption occurred at 5 mL/min flow rate and 25 mL volume for all adsorbents. The results showed that the two readily available adsorbents namely Pmc and YK, were suitable for removing chromium from aqueous solution. (c) 2007 Elsevier Ltd. All rights reserved.