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Original scientific paper

INFLUENCE OF CURRENT DENSITY ON LEACHATE TREATMENT EFFICIENCY BY ELECTROCOAGULATION WITH ZEOLITE ADDITION

By
Nediljjka Vukojević Medvidović ,
Nediljjka Vukojević Medvidović
Contact Nediljjka Vukojević Medvidović

Department of Environmental Engineering, Faculty of Chemistry and Technology, University of Split, Split, Croatia

Ladisav Vrsalović Orcid logo ,
Ladisav Vrsalović

Department of Electrochemistry & Materials Protection, Faculty of Chemistry and Technology, University of Split, Split, Croatia

Sandra Svilović Orcid logo ,
Sandra Svilović

Faculty of Chemistry and Technology, University of Split, Split, Croatia

Mirjana Cestarić
Mirjana Cestarić

Faculty of Chemistry and Technology, University of Split, Split, Croatia

Abstract

The electrocoagulation with zeolite addition was used to treat compost leachate. The effects of different current densities and zeolite particle sizes on electrode dissolution, electrode surface condition, and removal efficiency were investigated. The surface of the electrodes was analysed by optical microscope, while the consumption of the aluminium electrodes was investigated by weighing. The results confirmed that the removal efficiency could be improved by conducting the experiment at higher current densities, but the electrodes used were significantly more damaged. Significant damage was also observed on the electrode used in the experiment with larger zeolite particles, which can be related to the stronger abrasion effect.

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