2.3.4. Metal Recovery from PLS-2: MnCO3 Precipitation

Sodium carbonate (Na2CO3) was used to precipitate manganese from PLS-2 (a quantity of 90 g Na2CO3 was added for 1 L of PLS-2). The MnCO3 precipitate was rinsed using an S/L ratio of 10% for 10 min for a moderate-speed mixing (200 rpm) to eliminate dissolved sulfur and sodium from the MnCO3 powder after precipitation. All precipitation experiments were carried out at ambient temperature.
