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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Biosorption of hexavalent chromium using biofilm of E. coli supported on granulated activated carbon
World Journal of Microbiology and Biotechnology, Volume 25, No. 10, Year 2009
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Description
The optimization of hexavalent chromium biosorption has been studied by using three different biosorbents; biofilm of E. coli ASU 7 supported on granulated activated carbon (GAC), lyophilized cells of E. coli ASU 7 and granulated activated carbon. Supporting of bacteria on activated carbon decreased both the porosity and surface area of the GAC. Significant decrement of surface area was correlated to the blocking of microspores as a result of the various additional loads. The experimental data of adsorption was fitted towards the models postulated by Langmuir and Freundlich and their corresponding equations. The maximum biosorption capacity for hexavalent chromium using biofilm, GAC and E. coli ASU 7 were 97. 70, 90. 70, 64. 36 mg metal/g at pH 2. 0, respectively. Biosorption mechanism was related mainly to the ionic interaction and complex formation. Based on the experimental conditions, the presence of bacteria could be enhanced the capacity of activated carbon to adsorb hexavalent chromium ions from aqueous solutions. © 2009 Springer Science+Business Media B.V.
Authors & Co-Authors
Gabr, Rabei M.
Egypt, Asyut
Faculty of Science
Gad El-Rab, Sanaa M.F.
Egypt, Asyut
Assiut University
Abskharon, Romany N.N.
Egypt, Asyut
Assiut University
Belgium, Brussels
Vrije Universiteit Brussel
Hassan, Sedky H.A.
Egypt, Asyut
Assiut University
South Korea, Chuncheon
Kangwon National University
Shoreit, Ahmed Abdelfattah Mohamed
Egypt, Asyut
Assiut University
Statistics
Citations: 38
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1007/s11274-009-0063-x
ISSN:
09593993
Research Areas
Environmental