Karakterisasi Adsorben dari Kulit Manggis dan Kinerjanya pada Adsorpsi Logam Pb(II) dan Cr(VI) - (Adsorbent Characterization From Mangosteen Peel And Its Adsorption Performance On Pb(II) And Cr(VI))

摘要

The USAge of biomass waste-based adsorbent for the adsorption of hazardous metal in wastewater is not only reducing waste but also lowering adsorbent price. This research aims to study the characteristics of adsorbent from mangosteen peel (Garcinia Mangostana L.) and activated charcoal from mangosteen peel, also to compare the adsorption performance on metal ion Pb(II) and Cr(VI). Synthetic wastewater used from a solution of Pb(NO3)2 and K2Cr2O7 with variations in initial concentration of 20, 40, 80, 100 and 200 mg/L. Adsorption performed at pH 5, ratio of adsorbent and waste solution 1/200 (w/v), 60 rpm, 0.5 gs nano-sized adsorbent. Characterization using SEM, FTIR and SEM-EDS showed that both adsorbents characteristics met the requirements of SNI 06-3730-1995. The highest adsorption capacity of activated carbon to adsorb Pb(II) and Cr(VI) were 38.543 mg/g and 36.838 mg/g while biosorbent adsorb Pb(II) and Cr(VI) respectively 3.98 mg/g and 36.12 mg/g.