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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 9, No. 3, 2006, pp. 253-257
Bioline Code: ej06035
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 9, No. 3, 2006, pp. 253-257

 en Degradation of tribromophenol by wood-rot fungi and hamilton system
Monrroy, Mariel; Freer, Juanita; Baeza, Jaime & Rodríguez, Jaime

Abstract

Biological, chemical and combined treatments were used to degrade TBP. The biological treatment consisted in the use of Laetiporus sulphureus check for this species in other resources , Gloeophyllum trabeum check for this species in other resources and Ganoderma australe check for this species in other resources , which respectively achieved 48%, 74% and 80% degradation, and 40%, 70% and 77% of organic bromine removal (AOX) on TBP water solutions (60 mg L-1) after 15 days of bio treatment. The biological treatment with G. australe on TBP-contaminated sawdust (10 mg kg-1) led to 23% degradation. The chemical treatment consisted in the Hamilton system (Fenton reaction assisted by 1,2-dihydroxybenzene); observing with this treatment, 95% degradation, 50% mineralization (TOC), and 48% reduction of chemical oxygen demand (COD). The combined treatment of both (chemical-biological) treatments produced degradations of 100%, and reduction of toxicity of 34% and 30%, with L. sulphureus and G. australe, respectively.

Keywords
biological treatment, combined treatment, mineralization, toxicity, tribromophenol.

 
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