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Applied and Environmental Microbiology, September 2001, p. 4349-4352, Vol. 67, No. 9
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.9.4349-4352.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Biosorption of Copper by a Bacterial Biofilm on a Flexible Polyvinyl Chloride Conduit

Fouad M. Qureshi, Uzma Badar, and Nuzhat Ahmed*

Centre for Molecular Genetics, University of Karachi, Karachi 75270, Pakistan

Received 20 February 2001/Accepted 5 June 2001

Inexpensive technologies with less-than-optimal efficiencies as a strategy for countering economic restraints to pollution control have been evaluated by using a laboratory-scale biotreatment process for copper-containing effluent. Economizing measures include the use of polyvinyl chloride (PVC) cylinders fashioned from commercially available flexible PVC conduit to support a biofilm that was cultured in an inexpensive medium prepared in wastewater. The biofilm was challenged by aqueous copper solution in a bioreactor and subsequently analyzed under a scanning electron microscope with energy-dispersive X-ray microanalysis.

* Corresponding author. Mailing address: Centre for Molecular Genetics, University of Karachi, Karachi 75270, Pakistan. Phone: 92 (21) 496-6045. Fax: 92 (21) 924-3190. E-mail: a_nuzhat{at}yahoo.com.

Applied and Environmental Microbiology, September 2001, p. 4349-4352, Vol. 67, No. 9
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.9.4349-4352.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.




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