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Research Themes > Bioreduction of Azo dyes and Pigments

Bioreduction of Azo dyes and Pigments


    Fe(III)-reducing bacteria show considerable potential for the degradation of xenobiotic organics. In a collaborative project with the QUESTOR Centre (University of Belfast) and the Dept of Colour Chemistry (University of Leeds), we are studying the bioreduction and colour removal of model azo compounds including soluble dyes, pigments and dyes bonded to cotton substrates. The aim of this research programme is to develop a robust, scalable bioprocess for the biological treatment of coloured waste, which can also be used for a range of other reductive biotransformations. As part of this work we are studying electron transfer in the model Fe(III)-reducing bacterium Shewanella oneidensis.

Recent Publications


C. I. Pearce, J. R. Lloyd and J. T. Guthrie (In Press) Bio-bleaching of dyed cotton fabric using a bacterial catalyst Textile Research Journal
von Canstein, H., Ogawa, J., Shimizu, S. and Lloyd, J.R. (2008) Secretion of flavins by Shewanella species and their role as extracellular redox mediators. Applied and Environmental Microbiology. 74 615-623
Pearce, C.I., Guthrie, J.T. and Lloyd, J.R. (2007) Reduction of pigment dispersions by Shewanella strain J18 143. Dyes and Pigments 76 694-703
Pearce, C. I. , Christie, R., Boothman, C., von Canstein, H., Guthrie, J.T. and J. R. Lloyd (2006) Reactive azo dye reduction by Shewanella strain J18 143 Biotechnology and Bioengineering 95 692-703

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