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Physical and Numerical Model of Electrocoagulation Process with Aluminum Electrodes for Phosphate Removal

The efficiency of the electrocoagulation process for the removal of phosphate ions (PO_4^(3-)-P) has been analyzed using a batch full-scale reactor with aluminium electrodes. The effects of the flow rate through the reactor, applied current density and reactor volume were the focus of the study. The initial (PO_4^(3-)-P) concentration was reduced by 90 % after 90 min of reactor operation time. Additionally, a three-dimensional numerical model for (PO_4^(3-)-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.

electrocoagulation ; phosphate ; batch reactor ; flow rate ; numerical model

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