Application Of Activated Candlenut Shell Using Potassium Hydroxide For Iron Reduction (Fe TO FeSO4). Journal of Chemical Process Engineering, [S. l.], v. 4, n. 2, p. 63–67, 2019. DOI: 10.33536/jcpe.v4i2.840. Disponível em: https://jurnal.fti.umi.ac.id/index.php/JCPE/article/view/840. Acesso em: 1 jul. 2025.