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Biodegradation of
dodecylbenzene solfonate sodium by Stenotrophomonas
maltophilia Biofilm
Hosseini Farzaneh1*, Malekzadeh Fereidon1,
Amirmozafari Noor2 and Ghaemi Naser3
1Department
of Biology, College of Basic Science, Islamic Azad
University Research and Science Tehran branch, Tehran, Iran.
2Department
of microbiology, Iran University of Medical Sciences,
Tehran, Iran.
3Department
of Biotechnology, College of Science, Tehran University,
Tehran, Iran.
*Corresponding author. E-mail:
farzaneh953@yahoo.com.
Tel: +98021-22641842.
Accepted 22
June, 2009 |
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Immobilization for microbial cultures has proved to be
advantageous in municipal and industrial sewage treatment
because of high degradation efficiency and good operational
stability. In this survey, a bacterial strain was isolated
from activated sludge that utilized branched anionic
surfactants (BAS) as a sole carbon source. Identification of
isolated strain was from 16S rRNA sequencing method. The
immobilized cells on silanized glass beads as support and
unmodified surfaces were used for removal of BAS; both types
showed effective biodegrading of BAS. The removal rate in
silanized surface was about 2 fold of unmodified surface.
The result of biodegradation was studied by HPLC method and
scanning electron microscope.
Key
words:
Branched anionic surfactants, biofilm, biodegradation,
silanization. |
