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Chemistry for Sustainable Development

2008 year, number 2

Sorption of Copper and Zinc by Humic Acids from Model Solutions

A. D. Budaeva, E. V. Zoltoev, G. I. Khanturgaeva, B. S. Zhambalova
Keywords: humic acids, absorbent carbon, sorption, Langmuir isotherms
Pages: 139-142


Sorption of Cu2+ and Zn2+ cations from model solutions by humic acids that were extracted from oxidized brown coals of Gusinoozyerskoye deposit has been investigated. An effect of pH value on the extraction of Cu2+ ions has been considered; sorption isotherms of Cu2+ and Zn2+ ions have been plotted. Maximum sorption exchange capacities of humic acids have been calculated on the basis of the Langmuir isotherm equation