Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/2793
Título: Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials
Autor: Emanuelsson, Maria A.E.
Henriques, Isabel S.
Jorge, Ruben M Ferreira
Castro, Paula ML
Palavras-chave: 2-fluorobenzoate
Upflow Fixed bed bioreactors
Granulated activated carbon
Expanded clay
Data: 2006
Editora: Wiley Blackwell
Citação: EMANUELSSON, Maria A.E...[et al.] - Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials. Journal of Chemical Technology and Biotechnology. ISSN 0268–2575. Vol. 81, n.º 9 (2006), p. 1577–1585
Resumo: Three upflow fixed bed bioreactors treating an aqueous stream containing 2-fluorobenzoate were operated for a period of 7months, during which they were exposed to high organic loading rates and starvation. The reactors contained granular activated carbon (GAC), polyethylene (PE) particles and expanded clay (EC) respectively as growth support for microbial biofilms. The performance of the reactors was compared and the biofilm microbial population was followed by cell counting and denaturing gradient gel electrophoresis (DGGE). The reactor containing GAC always had 100% removal efficiency owing to the adsorption properties of thematerial combined with biodegradation. The GAC reactor also recovered better after starvation periods in the sense that it showed more stable behaviour than the reactors containing EC and PE. The highest biological elimination capacity was observed for the reactor containing EC, which reached 200mg day−1 L−1 during reactor start-up, but during long-termoperation the reactor containing GAC showed the highest biological elimination capacity, 140mg day−1 L−1. DGGE analysis indicated that starvation periods seemed to be responsible for shifts in the microbial population.
URI: http://hdl.handle.net/10400.14/2793
Versão do Editor: The definitive version is available at http://onlinelibrary.wiley.com/doi/10.1002/jctb.1565/abstract
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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