Ilimu, E., Alimuddin and Sarniah 2023. Optimization of Adsorbent Combinated Performance in Reducing Metal (Fe and Ni) in Water. Jurnal Ilmiah Kanderang Tingang. 14, 1 (Jun. 2023), 235-243. DOI:https://doi.org/10.37304/jikt.v14i1.220.