|
Use of Aspergillus
wentii for biosorption of methylene blue from aqueous
solution
Bilal Acemioğlu1*,
Metin Kertmen2, Metin Diğrak2, M. Hakkı
Alma3
1Department
of Chemistry, Faculty of Science and Arts, Kilis 7 Aralık
University, 79000, Turkey.
2Department
of Biology, Faculty of Science and Arts, Kahramanmaras Sutcu
Imam University, 46100, Turkey.
3Department
of Industrial Engineering of Forest, Faculty of Forest,
Kahramanmaras Sutcu Imam University, 46060, Turkey.
*Corresponding author. E-mail:
acemioglu@kilis.edu.tr. Tel: +90 348 8222350.
Fax: +90
348 8222351
Accepted
12 October, 2009 |
|
In this
study, Aspergillus wentii was used as a biosorbent
for the adsorption of methylene blue from aqueous solution.
The effects of contact time, initial dye concentration,
solution pH and temperature on biosorption were
investigated. The contact time required (that is, the
equilibrium time) for maximum dye biosorption was found to
be 120 min. The amount of the dye biosorbed increased with
increasing initial dye concentrations and solution pH, while
it was decreasing with an increase in temperature. Percent
biosorption was changed between 14.86 and 85.04 under all
conditions studied. Desorption
studies were performed by changing of the value pH among 3 -
10. Desorption was considerably affected by lower pH.
The maximum percentage of desorption was found to be 29.51
at pH 3. Biosorption isotherm from equilibrium values
followed Freundlich model.
Key words:
Aspergillus wentii, dye, methylene blue, biosorption,
desorption, isotherm. |
