A. Asmara, N. Kamila, and N. Kamila, “ OPTIMISATION OF SULFURIC ACID CONCENTRATION FOR ENHANCED FE2+ ION REMOVAL USING ACTIVATED CHARCOAL FROM BOILED PEANUT SHELLS: CHARACTERISATION AND PERFORMANCE EVALUATION ”, LJEE, vol. 5, no. 1, pp. 10–18, Nov. 2024.