PAPER RESEARCH AT
SEMINAR NASIONAL SAINS DAN TEKNOLOGI (SATEK) 2007
SUHARSO, BUHANI, SINLY EVAN PUTRA
DEPARTEMENT OF CHEMISTRY
LAMPUNG UNIVERSITY, INDONESIAN 35145
Nannochloropsis sp. is one kind of monocell green algae which can be used to adsorb metal ions. Nannochloropsis sp. has high ability to adsorb metal ion, because it has functional group such us amine, amide, and carboxyl. However, the ability of the algae biomass in adsorption of heavy metal ions has some problem such as; tiny size, low density, and easy to be damaged because of degradation by other microorganism. In order to improve physical and chemical quality of algae biomass, it needs to be immobilized using Polietilamina-Glutaraldehid.
In this research, It has been carried out immobilization of Nannochloropsis sp. biomass with polymer matrix resulted from cross-linking between Polietilamina-Glutaraldehid. After that, it has been carried out adsorption process upon metal ions Pb(II), Cd(II), and Cu(II). A result obtained shows that adsorption model of metal ions immobilized biomass upon metal ions are around 5.630 mg/g adsorbent for Pb(II), 25.745 kJ/mole for Cd(II), and 26.946 kJ/mole for Cu(II), respectively. From these adsorption energies, it can be conculed that interaction occured between immobilized biomass and metal ion is chemical interaction.
Key words: Nannochloropsis sp., polietilamina-glutaraldehid, immobilization.