POTENSI ARANG AKTIF DAGING BUAH SALAK PADANG SIDEMPUAN (Salacca Sumatrana) SEBAGAI ADSORBEN ION Cd(II) DAN ION Pb(II) DENGAN AKTIVATOR Na2CO3

Abstract

The activated carbon of snake fruit was made in two step i.e., carbonization at 400°C and activated with Na2CO3 with various concentration of 2.5; 5.0 and 7.5%. Characterization result showed that activation using 2.5% Na2CO3 produced the best characteristics with 5.02% of moisture content, 3.58% of ash content, 269.66 mg/g of iodine absorption and 53,16 m2/g of surface area. The activated carbon (2.5% Na2CO3) was contacted with various concentration of cadmium and lead for 24 hours and analyzed with Atomic Absorption of Spectrophotometer with efficiency of adsorption were 98.80% and 99.41%.