Original scientific paper

Environmentally friendly waste for wastewater treatment

Lorena Koren ; University of Zagreb Faculty of Metallurgy Sisak, Croatia
Anita Štrkalj orcid.org/0000-0002-7117-4687 ; University of Zagreb Faculty of Metallurgy Sisak, Croatia
Zoran Glavaš orcid.org/0000-0003-4116-3255 ; University of Zagreb Faculty of Metallurgy Sisak, Croatia

Abstract

In this paper, the adsorption properties of two wastes from the metallurgical
industry were studied: waste after shot blasting of the castings and waste
moulding mixture, and waste from the wood industry, i.e. oak sawdust. A
solution of Cu(II) ions was used as the adsorbate. Experimental data have
shown that the waste from the metallurgical industry can be used as an
adsorbent for removal of Cu(II) ions from wastewater. For oak sawdust, it
could not be confirmed with certainty whether it had adequate adsorption
properties due to the release of substances that lead to the coloration of the
adsorbates. Lagergren's and Ho's model was used to describe the adsorption
kinetics of the system waste moulding mixture/Cu(II) ions and waste after shot
blasting of the castings/Cu(II) ions. It was concluded that both systems are
better described by Ho's model, i.e. that the adsorption kinetics in both
systems take place according to pseudo-second order reactions.

Keywords

environmentally friendly waste; wastewater; Cu(II) ions; adsorption kinetics

Hrčak ID:

305993

URI

https://hrcak.srce.hr/305993

Publication date:

14.11.2021.

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