Skip to the main content

Chemistry in Industry : Journal of Chemists and Chemical Engineers of Croatia, Vol. 72 No. 5-6 (special issue), 2023.

Original scientific paper

https://doi.org/10.15255/KUI.2022.066

Application of Different Metals as Electrode Material in Compost Leachate Treatment

Ladislav Vrsalović orcid id orcid.org/0000-0001-6111-5475 ; University of Split, Faculty of Chemistry and Technology, Ruđera Boškovića 35, 21 000 Split, Croatia
Nediljka Vukojević Medvidović orcid id orcid.org/0000-0002-8646-4249 ; University of Split, Faculty of Chemistry and Technology, Ruđera Boškovića 35, 21 000 Split, Croatia
Sandra Svilović orcid id orcid.org/0000-0003-0300-8932 ; University of Split, Faculty of Chemistry and Technology, Ruđera Boškovića 35, 21 000 Split, Croatia
Josipa Šarić orcid id orcid.org/0009-0005-9690-9909 ; University of Split, Faculty of Chemistry and Technology, Ruđera Boškovića 35, 21 000 Split, Croatia

Full text: english pdf 301 Kb

page 297-304

downloads: 223

cite

Abstract

In this paper, different metallic materials (alloys of Fe, Al, and Zn) were investigated as sacrificial anodes during electrocoagulation (EC) for the treatment of compost leachate. Taguchi’s L9 orthogonal array design was applied to investigate the four controllable factors (different metallic material, initial pH value, stirring speed, and contact time) on decrease of chemical oxygen demand (COD) and electrodes mass loss. COD decrease reached values in the range of 75.72–92.97 %. The Taguchi optimisation results showed that the most effective factor for decrease of COD is the duration of the experiment, while the electrode material was for electrodes mass loss. The zinc electrode showed the lowest potential for use in the EC process for treatment of compost leachate, while the Al and Fe electrodes could be used in an acid or slightly acidic environment. The following decreasing order of energy consumption was recorded: Zn > Al > Fe. The measured values of metal electrode mass loss exceeded the theoretical values calculated using Faraday’s law in EC experiments with Al electrodes, while in experiments with Fe and Zn electrodes, those differences were insignificant.

Keywords

Fe; Al; Zn; sacrificial anode; electrodes mass loss; Taguchi optimisation

Hrčak ID:

301982

URI

https://hrcak.srce.hr/301982

Publication date:

17.5.2023.

Article data in other languages: croatian

Visits: 787 *