Naslov
Removal of Cr(VI) ions from aqueous solution using foundry waste material : Kinetic and equilibrium studies

Autori
Šipuš, Ivica ; Štrkalj, Anita ; Glavaš, Zoran

Izvornik
Canadian metallurgical quarterly (0008-4433) 51 (2012), 4; 413-418

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
heavy metal ; foundry waste ; adsorption ; kinetics

Sažetak
In the present paper, Cr (VI) ions removal from aqueous solutions by adsorption on waste mould (green) sand was investigated. Waste mould sand is byproduct of the gray iron foundry. Batch adsorption test was carried out to determine the removal characteristic for Cr (VI) ions from aqueous solution. The obtained results are promising in the use of waste mould sand as an efficient low-cost and nonconventional adsorbent for the removal of Cr (VI) ions from aqueous solutions. The second-order kinetics produced better fitting of results in terms of correlation coefficient which suggests that the adsorption kinetics of Cr (VI) ions on the waste mould sand followed the second-order kinetic model. In the isotherm studies, Freundlich, Langmuir, Dubin – Radushevich and Redlich – Peterson isotherm models were applied and it was determined that the experimental data conformed to Langmuir isotherm model.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

Napomena
Glavni autor: Anita Štrkalj

POVEZANOST RADA