Electrocoagulation of chromium containing synthetic wastewater using monopolar iron electrodes

Abstract EN

In this work, the performance of batch electrocoagulation (EC) treatment using iron electrodes with monopolar configuration for trivalent chromium (Cr3+) removal from a synthetic wastewater was investigated.

The influences of current density (from 2 to 25 mA/cm2) and initial metal concentration (from 50 to 250 mg/L) on the removal efficiency were explored in a batch stirred cell to determine the best experimental conditions.

The results indicated that EC was very efficient to remove Cr3+ from the synthetic wastewater having an initial concentration of 250 mg/L of Cr3+ under the best experimental conditions.

At the current density of 25 mA/cm2 with a total energy consumption of ~38 kWh/m3, more than 99% removal value was achieved for Cr3+.

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