Biosorpsi Ion Logam Pb(II), Cu(II) dan Cd(II) pada Biomassa Sargassum duplicatum dengan Matrik Silika Gel
ABSTRACT: Sargassum duplicatum
algae biomass is biological material which has a potency to be used as a
biosorbent adsorb metal ions from industrial liquid waste, because it has
effective functional group as a ligand. However, the ability of the algae
biomass in adsorbing of heavy metal ions has some problem such as; tiny size,
low density, and easy to be degradated by other microorganism. In addition,
algae biomass can not be used directly in adsorption column for its application
as the biosorbent. In order to improve physical and chemical prpperties of
algae biomass, it needs to be immobilized on silica gel matrix. Series of
experiment have been done, morphology analysis of adsorbent surface was
performed by using Scanning Electron Microscopy (SEM) and adsorption process to
examine the effectiveness of algae biomass immobilized in adsorbing Pb(II),
Cu(II), and Cd(II) was performed using batch method at 27 °C. Concentration of
metal was determined by using Atomic Absorption Spectrophotometer (AAS) and
identification of functional group was conducted using Spectrophotometer
Infrared (IR). Data obtained showed that interacting among metal ions with
algae biomass is optimum at a range of 60 minutes. Adsorption energies of metal
ions resulted from the interaction of metal ions with the functional group of
-C=O group from carboxyl and amide on algae biomass and -Si-OH group from
silica were at a range of 21.09-25.05 kJ/mole.
Penulis: Buhani, Suharso,
Zipora Sembiring
Kode Jurnal: jpkimiadd060072
