Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6848
Título: A GAC biofilm reactor for the continuous degradation of 4-chlorophenol: treatment efficiency and microbial analysis
Autor: Carvalho, M.
Vasconcelos, I.
Bull, A.
Castro, P.
Data: 2001
Editora: Springer Verlag
Citação: CARVALHO, M....[et al.] - A GAC biofilm reactor for the continuous degradation of 4-chlorophenol: treatment efficiency and microbial analysis. Applied Microbiology and Biotechnology. ISSN 1432-0614. Vol. 57, n.º 3 (2001), p. 419–426
Resumo: Using a continuous enrichment technique, a bacterial consortium capable of degrading 4-chlorophenol (4-CP) was obtained from the rhizosphere of Phragmites australis. A granular activated carbon (GAC) biofilm reactor was established using this consortium, and the degradation of 4-CP was investigated under continuous flow operation using a feed of 20-50 mg l-1 with a hydraulic residence time of 17 min over a 6-month period. Chloride liberation occurred throughout the operation, and the reactor had 4-CP removal efficiencies of 69-100%. Periods of lower performance were attributed to clogging of the column with biomass and the formation of channels. Subsequently, the immobilized biofilm was subjected to a starvation period of 5 months, after which its degradative capacity was still maintained. The microbial consortium was characterized during the continuous flow experiment and dynamic population changes were observed throughout. One isolate recovered from the biofilm was shown to be capable of degrading 4-CP as a sole carbon and energy source.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6848
Versão do Editor: The original publication is available at www.springerlink.com
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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