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Sequential batch reactor for eucalypt kraft pulp effluent treatment with Trametes versicolor
Author(s) -
Xavier Ana MRB,
Tavares Ana Paula M,
Agapito Margarida SM,
Evtuguin Dmitry V
Publication year - 2008
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1954
Subject(s) - trametes versicolor , pulp and paper industry , effluent , kraft process , kraft paper , chemical oxygen demand , kappa number , pulp (tooth) , sequencing batch reactor , fermentation , batch reactor , bioreactor , waste management , chemistry , environmental science , wastewater , food science , laccase , environmental engineering , engineering , organic chemistry , medicine , pathology , enzyme , catalysis
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. Copyright © 2008 Society of Chemical Industry