Original scientific paper
Published in: Holistic Approach Environ. 8(2018) 3, pp. 71 – 77
Paper reference number: HAE-160
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KINETIC STUDY OF ADSORPTION OF HEAVY METALS ON BLAST FURNACE SLAG

Zoran Glavaš^*, Anita Štrkalj^*

^* University of Zagreb, Faculty of Metallurgy, Croatia

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ABSTRACT

In this paper, blast furnace slag was investigated as a potential adsorbent for the removal of zinc and copper ions from the aqueous solution. The adsorption was performed by a static, so-called “batch” process. Adsorption properties were studied by monitoring the influence of contact time adsorbent with adsorbate. Performed studies have shown that the equilibrium in the tested system is achieved in 30 minutes. Intraparticle diffusion model, heterogeneous diffusion model and film diffusion model were used to test the zinc and copper ion diffusion in a competitive adsorption. The obtained results showed that intraparticle diffusion controlled the adsorption process.

Keywords: blast furnace slag, Cu(II) and Zn(II) ions, adsorption, kinetics
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