ADSORPTION OF COPPER (II) AND LEAD (II) IONS HUMIC ACIDS ISOLATED FROM EXCESS ACTIVATED SLUDGE
The kinetics of adsorption of copper (II) and lead (II) ions by humic acids isolated from excess activated sludge of biological treatment facilities under static conditions has been studied. It is established that the Freundlich equation most satisfactorily describes the isotherms of adsorption of Cu (II) and Pb (II) ions by humic acids isolated from excess activated sludge in the entire range of the studied concentrations. The influence of temperature on the adsorption of heavy metal ions by humic acids isolated from the excess activated sludge of biological treatment facilities has been studied.