Degradation of Tribromophenol by Wood-Decaying Fungi and the 1,2-Dihydroxybenzene-Assisted Fenton Reaction

Authors: Monrroy, Mariel¹; Baeza, Jaime²; Freer, Juanita²; Rodríguez, Jaime¹

Source: Bioremediation Journal, Volume 11, Number 4, October 2007 , pp. 195-200(6)

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Abstract:

The degradation of 2,4,6-tribromophenol (TBP) by biological and chemical treatments was studied. Biological treatment involved the use of Laetoporeus sulfureus, Gloephyllum trabeum, and Ganoderma australe in liquid culture. Despite the inhibitory effects of TBP on the fungal growth, these fungi were able to degrade TBP after 15 days of biotreatment. At 66, 116, and 183 μ M TBP, the degradation by G. australe was the most efficient (71% to 77%), whereas G. trabeum and L. sulfureus degraded between 50% and 60% of three TBP concentrations. The removal of organic bromine reached values of 50% in all cases. The chemical treatment (1,2-dihydroxybenzene-assisted Fenton reaction) achieved up to 90% of TBP degradation. However, only 40% of TBP was mineralized and the toxicity level did not undergo changes during the chemical treatment. On the other hand, a 30% reduction in toxicity was obtained with a combined chemical-biological treatment.

Keywords: dihydroxybenzene; Fenton; tribromophenol; wood-decaying fungi

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10889860701710560

Affiliations: 1: Renewable Resources Laboratory, Biotechnology Center, and Faculty of Forestry Sciences, Universidad de Concepción, Concepción, Chile 2: Renewable Resources Laboratory, Biotechnology Center, and Faculty of Chemical Sciences, Universidad de Concepción, Concepción, Chile

Publication date: 2007-10-01