Abstract:
White Jabon fruit (Anthocaphalus cadamba) can be used as an adsorbent in the form of
activated charcoal because it has chemical content in the form of cellulose and protein.
This research aims to determined the adsorption ability of white jabon fruit towards
mercury (II) ions. The adsorbent was made by carbonization at 300 ºC for 30 minutes
and activated using NaOH, then charcoal was characterized according to
SNI 06-3730-1995, FTIR and ICP-MS. White Jabon fruit charcoal was applied to
absorb mercury (II) ions and analyzed the effect of variation in contact time (10; 20; 30;
40; 50 and 60 minutes) on adsorption capacity of charcoal. The characterization result
of the activated charcoal of white jabon fruit in this research indicate that was contained
water 1,298%, the ash content 2,595%, the iodine adsorption power
was 829.494 mg g-1 and the adsorption power of methylene blue was 26,741 mg g-1.
The best adsorption ability of mercury (II) ions is activated charcoal from white Jabon
fruit which is activated by NaOH and the optimum contact time is 40 minutes with an
absorption efficiency of 99.936%.
