Universidade do Minho >
Escola de Engenharia da Universidade do Minho | School of Engineering at the University of Minho >
Centro de Engenharia Biológica | Centre of Biological Engineering >
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|Title: ||Biosorption of Cr VI supported on mordenite zeolite|
|Authors: ||Figueiredo, Hugo|
Neves, Isabel C.
Tavares, M. T.
|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.|
|Appears in Collections:||CEB - Artigos em Livros de Atas / Papers in Proceedings|
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