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Title: Biosorption of Cr VI supported on mordenite zeolite
Authors: Figueiredo, Hugo
Silva, Bruna
Quintelas, C.
Neves, Isabel C.
Tavares, M. T.
Keywords: Zeolite
Issue date: Sep-2008
Citation: FERREIRA, E. C. ; MOTA, M., ed. lit. – “Chempor 2008 : proceedings of the International Chemical and Biological Engineering Conference, 10, Braga, 2008”. Braga : Departamento de Engenharia Biológica da Universidade do Minho, 2008. ISBN 97 978-972-97810-3-2. p 248-252.
Abstract: This work reports the usage of a combined zeolite-biosorbent system for the removal and recovery of aqueous CrVI. The biosorption system consisted of a bacterium, Arthrobacter viscosus, supported on two mordenite (MOR) type zeolites with different Si/Al ratio, HMOR (Si/Al = 10) and NaMOR (Si/Al = 6.5). The results show that the biofilm of A. viscosus supported on MOR zeolite is able to recover chromium from dilute solutions. For both biosorption-MOR systems, the maximum removal was obtained for initial concentration of 20 mgCr/L. However, the best results were obtained for HMOR-system with a removal of 52.1 % for the diluted concentration and the best uptake, 3.3 mgCr VI/gzeolite, was achieved for the initial concentration of 100 mgCr/L. The Langmuir isotherm model was applied with good fitting to the experimental data.
Type: conferenceObject
ISBN: 978-972-97810-3-2
Appears in Collections:CEB - Artigos em Livros de Atas / Papers in Proceedings

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