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1 2022

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Physical and numerical model of electrocoagulation process with aluminum electrodes for phosphate removal

Halkijevic Ivan, Loncar Goran, Posavcic Hana, Vouk Drazen

Environment Protection Engineering

2022

Vol. 48, nr 3

53--68

The efficiency of the electrocoagulation process for the removal of phosphate ions (PO43--P) has been analyzed using a batch full-scale reactor with aluminum electrodes. The effects of the flow rate through the reactor applied current density, and reactor volume were the focus of the study. The initial (PO43--P) concentration was reduced by 90% after 90 min of reactor operation time. Additionally, a three-dimensional numerical model for PO43--P removal via the electrocoagulation process is developed that includes the processes of phosphate adsorption and desorption on coagulated/flocculated particles, along with particles settling. Numerical model parametrization relies on the results from the experiments.