ABSTRACT Spent bleaching earth (SBE) is a waste produced by the bleaching unit in the palm oil refinery industry. One of the efforts to tackle SBE waste is regenerated into regenerated spent bleaching earth (RSBE) which can be used as an adsorber of heavy metals in water waste such as Pb(II) from industry. This study aims to determine the characteristics of the SBE and RSBE, the adsorptionā¦