Title: Bioaccumulation of azo dye using immobilised beads of Aspergillus fumigatus

Authors: Baoe Wang, Yongyou Hu, Lei Xie, Kang Peng

Addresses: School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China. ' School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China. ' School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China. ' School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China

Abstract: 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.

Keywords: Aspergillus fumigatus; azo dye; bioaccumulation; immobilisation; sodium carboxymethylcellulose; sodium CMC immobilised beads; decolourisisation; residual dye concentration.

DOI: 10.1504/IJEP.2009.025136

International Journal of Environment and Pollution, 2009 Vol.37 No.2/3, pp.327 - 338

Published online: 13 May 2009 *

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