Fernando, Eustace and Keshavarz, Tajalli and Kyazze, Godfrey (2013) Simultaneous co-metabolic decolourisation of azo dye mixtures and bio-electricity generation under thermophillic (50°C) and saline conditions by an adapted anaerobic mixed culture in microbial fuel cells. Bioresource Technology, 127. pp. 1-8. ISSN 0960-8524Full text not available from this repository.
In this study, azo dye adapted mixed microbial consortium was used to effectively remove colour from azo dye mixtures and to simultaneously generate bio-electricity using microbial fuel cells (MFCs). Operating temperature (20°C-50°C) and salinity (0.5% w/v-2.5% w/v) were varied during experiments. Reactor operation at 50°C improved dye decolourisation and COD removal kinetic constants by approximately two fold compared to the kinetic constants at 30°C. Decolourisation and COD removal kinetic constants remained high (0.28h-1 and 0.064h-1 respectively) at moderate salinity (1% w/v) but deteriorated approximately four fold when the salinity was raised to 2.5% (w/v). Molecular phylogenetic analysis of microbial cultures used in the study indicated that both un-acclimated and dye acclimated cultures from MFCs were predominantly comprised of Firmicutes bacteria. This study demonstrates the possibility of using adapted microbial consortia in MFCs for achieving efficient bio-decolourisation of complex azo dye mixtures and concomitant bio-electricity generation under industrially relevant conditions.
|Subjects:||University of Westminster > Science and Technology > Life Sciences, School of (No longer in use)|
|Depositing User:||Rachel Wheelhouse|
|Date Deposited:||24 Oct 2012 14:15|
|Last Modified:||03 Feb 2014 15:32|
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