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https://hdl.handle.net/1822/11338
Título: | Removal of Cr(VI) from aqueous solutions by a bacterial biofilm supported on zeolite: optimisation of the operational conditions and scale-up of the bioreactor |
Autor(es): | Pazos, M. Branco, Mónica Neves, Isabel C. Sanromán, M. A. Tavares, M. T. |
Palavras-chave: | Arthrobacter viscosus 13X zeolite Bioreactor Cr removal Scale-up |
Data: | Dez-2010 |
Editora: | John Wiley and Sons |
Revista: | Chemical Engineering and Technology |
Citação: | Pazos, M., Branco, M., Neves, I. C., Sanromán, M. A., & Tavares, T. (2010, October 29). Removal of Cr(VI) from Aqueous Solutions by a Bacterial Biofilm Supported on Zeolite: Optimisation of the Operational Conditions and Scale-Up of the Bioreactor. Chemical Engineering & Technology. Wiley. http://doi.org/10.1002/ceat.201000203 |
Resumo(s): | The aim of this study was to investigate the feasibility of a bioreactor system and its scale-up to remove Cr(VI) from solution. The bioreactor is based on an innovative process that combines bioreduction of Cr(VI) to Cr(III) by the bacterium Arthrobacter viscosus and Cr(III) sorption by a specific zeolite. Batch studies were conducted in a laboratory-scale bioreactor, taking into account different operating conditions. Several variables, such as biomass concentration, pH and zeolite pre-treatment, were evaluated to increase removal efficiency. The obtained results suggest that the Cr removal efficiency is improved when the initial biomass concentration is approximately 5 g L–1 and the pH in the system is maintained at an acidic level. Under the optimised conditions, approximately 100 % of the Cr(VI) was removed. The scale-up of the developed biofilm process operating under the optimised conditions was satisfactorily tested in a 150-L bioreactor. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/11338 |
DOI: | 10.1002/ceat.201000203 |
ISSN: | 0930-7516 |
e-ISSN: | 1521-4125 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Pazos_Chemical Engineering and Technology.pdf | 282,11 kB | Adobe PDF | Ver/Abrir |