Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/8253

TitleTreatment of chromium(VI) solutions in a pilot-scale bioreactor through a biofilm of arthrobacter viscosus supported on GAC
Author(s)Quintelas, C.
Fonseca, Bruna
Silva, Bruna Andreia Nogueira Airosa
Figueiredo, Hugo
Tavares, M. T.
KeywordsBiofilm
Bioreactor
Chromium
Isotherms
Modelling
Issue date2009
PublisherElsevier Ltd.
JournalBioresource Technology
Citation"Bioresource Technology". ISSN 0960-8524. 100:1 (2009) 220-226.
Abstract(s)The aim of this work is to evaluate the applicability of a biofilm to the removal of chromium in solution, at a pilot scale. The effect of the initial concentration of metal on the biosorption behavior of an Arthrobacter viscosus biofilm supported on granular activated carbon, in batch and column essays was also analyzed. Six isotherm equations have been tested in the present study. The best fit was obtained with the Freundlich model. It was observed that as the initial chromium concentration increases, the uptake increases too, but the removal percentage decreases, with values between 95.20% (C0 = 5 mg/l) and 38.28% (C0 = 1000 mg/l). The batch adsorption studies were used to develop a pilot bioreactor able to remove chromium from aqueous solutions. Data obtained in a pilot-scale reactor showed an average removal percentage of 99.9%, during the first 30 days, for the initial concentration of 10 mg/l and an average removal percentage of 72%, for the same period and for the initial concentration of 100 mg/l. Uptake values of 11.35 mg/g and 14.55 mg/g were obtained, respectively, for the initial concentration of 10 and 100 mg/l. The results obtained are very promising and encourage the utilization of this biofilm in environmental applications.
TypeArticle
URIhttps://hdl.handle.net/1822/8253
DOI10.1016/j.biortech.2008.05.010
ISSN0960-8524
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

Files in This Item:
File Description SizeFormat 
Quintelas_BioresourceTechnol[1].pdf320,53 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID