PEMBUATAN KARBON AKTIF DARI LIMBAH SABUT PINANG ASAL PULAU TIMOR SEBAGAI BIOSORBEN LOGAM Ca DAN Mg DALAM AIR TANAH

The production of activated carbon from areca nut waste as a biosorbent for Ca and Mg in groundwater has been done. This research aimed to determine the ash content, water iodine number carbons optimum contact time adsorption capacity groundwater. Activated making is done by carbonation activation. activator used was H2SO4 1,5 M with soaking 24 hours. process carried out batches variations time. results showed that nuts had an content 14,97%, 7,17%, 1,079.19 mg/g, FTIR characterization functional groups OH, CH, CO, C≡C, C=C C=O. condition fiber-activated calcium magnesium at 90 minutes 2.1196 mg/g 0.7540 .