Utilization of Spent Arabica Coffee Grounds as Raw Material for Activated Charcoal in Liquid Bath Soap Formulation

Arabica coffee (Coffea arabica) is one of the most popular coffees among Acehnese, an ethnic group from Aceh, Indonesia. The amount consumed directly proportional to waste produced. Spent grounds are residue obtained during brewing process. can be utilized by converting them into active charcoal adsorbents. This study aimed produce activated spent arabica (SACG), utilize it as ingredient in liquid bath soap formulations, and determine best formula. characterization was conducted compared Indonesian National Standard (SNI). contains SACG divided five formulas with various concentrations cocamidopropyl betaine (CAPB) sodium lauryl sulphate (SLS) surfactants. Furthermore, evaluation formula performed. results showed that produced met SNI requirements a yield 86.3%, volatile substance content 10.67%, water 5.67%, ash 1.7%, pure carbon 81.96%, iodium absorption 1522.8 mg/g. revealed containing combination 5% CAPB SLS (F5) requirements. used excellent raw material for formulations.