Aleja narodnih heroja 3, Sisak, Croatia, Faculty of Metallurgy, University of Zagreb , Zagreb , Croatia
Aleja narodnih heroja 3, Sisak, Croatia, Faculty of Metallurgy, University of Zagreb , Zagreb , Croatia
In this paper, the adsorption properties of two metallurgical wastes (slag and anode dust) and two municipal wastes (eggshells and coffee grounds) were described. Acetic acid was used as the adsorbate Adsorption kinetic was monitored during the adsorption process. The obtained results showed that all tested waste materials can be used as potential cheap adsorbents. Adsorption took place relatively quickly. Equilibrium was reached in 15 minutes, and the adsorption kinetics followed the pseudo-first-order reactions, i.e., can be described by the Lagergren model. All qe values calculated using Ho's model have a negative sign. That indicates that the Ho model is not suitable for describing the kinetics of the tested adsorption systems.
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