Asmara, A., Kamila , N., & Kamila, N. (2024). OPTIMISATION OF SULFURIC ACID CONCENTRATION FOR ENHANCED FE2+ ION REMOVAL USING ACTIVATED CHARCOAL FROM BOILED PEANUT SHELLS: CHARACTERISATION AND PERFORMANCE EVALUATION . ingkar: ournal of nvironmental ngineering, 5(1), 10–18. etrieved from https://journal.ar-raniry.ac.id/lingkar/article/view/5080