Penggunaan Bentonit Setelah dilapisi Kitosan Sebagai Adsorben untuk Menyerap Ion Logam Besi (Fe) dengan Menggunakan Metoda Spektrofotometri Serapan Atom

Abstract

The use of bleaching earth after coated chitosan as an adsorbent to adsorption iron ion metal (Fe) using Atomic Absorption spectrophotometric method has been studied. 3 g activated bleaching earth, chitosan and bleaching earth after coated chitosan added into iron standard solution (Fe) which has a variation of concentration 2,0; 4,0; 6,0; 8,0; and 10,0 mg/L. Stirred up to 15 minutes, filtered and measured by iron ion metal concentration (Fe) using Atomic Absorption Spectrophotometer instrument with calibration curve. Adsorption of iron ion metal (Fe) is 96,9350%, 94,9475%, 92,2710%, 90,1512% and 87,6310% for activated bleaching earth, while of 93,7300%; 91,5125%, 89,3766%, 87,6375% and 84,5630% for chitosan and 99,8700%, 99,2325%, 98,3533%, 95,3562% and 93,1670% for bleaching earth after coated chitosan. The result of research show that bleaching earth after coated chitosan the best can adsorps iron ion metal (Fe) is (99,8700%) than activated bleaching earth (96,9359%) and chitosan (93,7300).