dc.contributor.author |
Gazem, M.A.H. |
|
dc.contributor.author |
Nazareth, S.W. |
|
dc.date.accessioned |
2015-06-04T03:30:57Z |
|
dc.date.available |
2015-06-04T03:30:57Z |
|
dc.date.issued |
2012 |
|
dc.identifier.citation |
World Journal of Microbiology and Biotechnology. 28(7); 2012; 2521-2530. |
en_US |
dc.identifier.uri |
http://dx.doi.org/10.1007/s11274-012-1060-z |
|
dc.identifier.uri |
http://irgu.unigoa.ac.in/drs/handle/unigoa/2806 |
|
dc.description.abstract |
The isolate Aspergillus versicolor was obtained from an estuary, which is exposed to metal contamination. It was found to have a good metal tolerance and sorption capacity. Further studies revealed that the rate of metal removal from solution is very rapid in the first 5-10 min, and is favoured by a pH of 6.0. The biosorption data obtained was explained by the Freundlich adsorption isotherm model and followed a pseudo-second order kinetics reaction. The fungus showed a higher accumulation of fatty acids when grown in presence of metals as compared to the mycelium grown in absence of the metal; there was also an increase in the saturation index of fatty acids in presence of Cu2+ which serves as a protective mechanism for the fungus. Fourier Transform Infrared, scanning electron microscopy and EDAX analysis indicated that metal removal from solution by A. versicolor occurred by a passive adsorption to the fungal cell surface, involving an ion exchange mechanism. |
en_US |
dc.publisher |
Springer Verlag (Germany) |
en_US |
dc.subject |
Microbiology |
en_US |
dc.title |
Isotherm and kinetic models and cell surface analysis for determination of the mechanism of metal sorption by Aspergillus versicolor |
en_US |
dc.type |
Journal article |
en_US |
dc.identifier.impf |
y |
|