Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/7463
Título: Development of flow injection potentiometric methods for the off-line and on-line determination of fluoride to monitor the biodegradation of a monofluorophenol in two bioreactors
Autor: Mesquita, Raquel B. R.
Santos, Inês C.
Pedrosa, Marta F. F.
Duque, Anouk
Castro, Paula M. L.
Rangel, António O. S. S.
Palavras-chave: Flow injection analysis
Potentiometric fluoride determination
Online
Monofluorophenol
Data: 2011
Editora: Elsevier
Citação: MESQUITA, Raquel B. R....[et al] - Development of flow injection potentiometric methods for the off-line and on-line determination of fluoride to monitor the biodegradation of a monofluorophenol in two bioreactors. In International Conference on Flow Injection Analysis and Related Techniques, 16th,(ICFIA 2010), Pattaya, Tailândia, 25-30 Abril, 2010. Talanta. ISSN 00399140. Vol. 84, nº5 (2011), p.1291–1297
Resumo: Water treatment has become a source of concern as new pollutants and higher volumes of waste water must be treated. Emerging biological approaches, namely the use of bioreactors, for cleaning processes have been introduced. The use of bioreactors requires the development of efficient monitoring tools, preferably with realtime measurements. In this work, a couple of flow injection systems were developed and optimized for the potentiometric determination of fluoride to monitor a rotating biological contactor (RBC) bioreactor and a sequencing batch reactor (SBR) with offline and online sampling. Both the RBC and the SBR bioreactors were set up for the biodegradation of the halogenated organic compound 2fluorophenol and, as fluoride was a degradation byproduct, the process was monitored by following up its concentration. The described flow injection potentiometric methods enabled the fluoride determination within the required quantification range 0.10–100mM. The possible interferences from the growth medium were minimized inline. The determination rate was 78 h−1 for the offline monitoring of RBC and 50−1 h for the online monitoring of the SBR, with a sample consumption of 0.500mL and 0.133mL per determination, respectively. Furthermore, the overall reagent consumption was quite low. The accuracy of the system was evaluated by comparison with a batch procedure. The SBR efficiency was monitored both online by the flow system and offline by HPLC, for comparison purposes.
Peer review: yes
URI: http://hdl.handle.net/10400.14/7463
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0039914011000610
Aparece nas colecções:CBQF - Artigos em actas / Papers in proceedings

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