Izvorni znanstveni članak
https://doi.org/10.15255/KUI.2022.066
Application of Different Metals as Electrode Material in Compost Leachate Treatment
Ladislav Vrsalović
orcid.org/0000-0001-6111-5475
; Sveučilište u Splitu, Kemijsko-tehnološki fakultet, Ruđera Boškovića 35, 21 000 Split
Nediljka Vukojević Medvidović
orcid.org/0000-0002-8646-4249
; Sveučilište u Splitu, Kemijsko-tehnološki fakultet, Ruđera Boškovića 35, 21 000 Split
Sandra Svilović
orcid.org/0000-0003-0300-8932
; Sveučilište u Splitu, Kemijsko-tehnološki fakultet, Ruđera Boškovića 35, 21 000 Split
Josipa Šarić
orcid.org/0009-0005-9690-9909
; Sveučilište u Splitu, Kemijsko-tehnološki fakultet, Ruđera Boškovića 35, 21 000 Split
Sažetak
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.
Ključne riječi
Fe; Al; Zn; sacrificial anode; electrodes mass loss; Taguchi optimisation
Hrčak ID:
301982
URI
Datum izdavanja:
17.5.2023.
Posjeta: 831 *