Keywords: Aspergillus fumigatus, azo dye, bioaccumulation, immobilisation, sodium carboxymethylcellulose, sodium CMC immobilised beads, decolourisisation, residual dye concentration
Bioaccumulation of azo dye using immobilised beads of Aspergillus fumigatus
Sodium carboxymethylcellulose (CMC) immobilised beads of Aspergillus fumigatus were found to effectively decolourise culture media containing azo dye namely, reactive brilliant red K-2BP, by bioaccumulation in this paper. CMC beads without biomass and inactive CMC beads were used as control systems. The optimum values of influence factors such as, initial pH, temperature, agitation rate, salinity range, beads diameter, and beads dosage on bioaccumulation in batch mode were 6∼9, 40°C, 150 r/min, 0∼2.5%, 2.0 mm and 3.0%, respectively. The residual dye concentration decreased irregularly with contact time.