CHARACTERIZATION OF BIOFILM POLYMERS AS A BIOSORBENTFOR WATER TREATMENTANDI KURNIAWAN AND TATSUYA YAMAMOTO
Biofilm as a predominant habitat of microbes in aquatic ecosystems is one of the most promising alternative biosorbents in the water contamination treatment including that subjected to pollutantions. The main site in the biofilm which able to adsorb the pollutant is the biofilm polymer. The possibility to use the biofilm as a biosorbent for pollutant ions will increase if the characteristics of the biofilm polymer are understood. In this study, the characterization of the biofilm polymer collected from the stone surface in Lake Biwa Japan and the adsorption of various ions to this biofilm were investigated. The results indicate that the ionizable functional groups such ascarboxylic and amino group exist within biofilm polymer resulting in both the negative and positive charges of the biofilm polymer. The ion adsorption to the Biofilm seems to be aphysicochemical process where the electrostatic interaction among the ions and the charged sites in Biofilm polymers is a primary driving force where the divalent cations were adsorbed much more than monovalent cations. According to the results of this study, the characteristics of the bio film polymer are fundamentally important in the development of the bio film-based technology to solve the environmental problems.
Enter your contact information below to receive full paper.