Sequential batch reactor for eucalypt kraft pulp effluent treatment with Trametes versicolor
authors Xavier, AMRB; Tavares, APM; Agapito, MSM; Evtuguin, DV
nationality International
journal JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
author keywords Trametes versicolor; pulp effluent; sequential batch reactor; ligninolytic enzymes
keywords PAPER-MILL EFFLUENT; LACCASE INDUCTION; DECOLORIZATION; WASTEWATERS; PEROXIDASE; REMOVAL; LIGNIN; SYSTEM
abstract BACKGROUND: A sequential batch reactor (SBR) was used for eucalypt kraft pulp effluent treatment with Trametes versicolor. A 2(3) full factorial design and response surface methodology were applied to optimise the batch fermentation conditions. Effluent concentration, culture medium and inoculum age were the factors selected for this study in order to optimise the reduction of chemical oxygen demand (COD). RESULTS: The presence of Trametes Defined Medium (TDM) in the fermentation was required to obtain a significant COD reduction. Experiments in the batch reactor confirmed, in general, the predicted results of optimisation developed from Erlenmeyer batch assays. The T. versicolor culture remained active during 42 days of study in the SBR, providing approximately 80%, of COD reduction. CONCLUSION: Trametes versicolor may be considered as very promising for the biological treatment of effluents from kraft pulp mills in an SBR system instead of the activated sludge mixed cultures traditionally used. (C) 2008 Society of Chemical Industry
publisher WILEY-BLACKWELL
issn 0268-2575
year published 2008
volume 83
issue 12
beginning page 1602
ending page 1608
digital object identifier (doi) 10.1002/jctb.1954
web of science category Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Environmental; Engineering, Chemical
subject category Biotechnology & Applied Microbiology; Chemistry; Engineering
unique article identifier WOS:000261113800004
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