Hasri1, Mudasir2, Nurul H. A2, Roto2
1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Makassar State University, Parangtambung, Makassar, Indonesia
2Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta, Indonesia,55281
ABSTRACT
An application of Saccharomycess cereviceae biomass immobilized on chitosan (SC-Chi adsorbent) for Pb(II) ions removal was demonstrated. Adsorption experiment was conducted with various mass ratio of Saccharomycess cereviceae biomass to chitosan, contact time, pH of solution and concentration of the cation. Total Pb(II) metal ion adsorbed was calculated from the difference of metal ion amount before and after adsorption measured by AAS. The results showed that optimum condition for adsorption of Pb(II) ions by the SC-Chi was achieved with mass ratio of Saccharomycess cereviceae to chitosan of 50%(w/w), pH solution of 7, contact time of 60 minutes and concentration of 25 mgL-1. The hydroxyl (-OH) and amino (-NH2) functional groups are believed to be responsible for the adsorption of Pb(II) ions by the adsorbent.
Keywords: Immobilization, Saccharomycess cereviceae biomass, chitosan, adsorption, Pb(II) ion
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