African Journal of Biochemistry Research
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Article Number - B9C21A89221


Vol.2(1), pp. 030-039 , January 2008

ISSN: 1996-0778



Full Length Research Paper

Aeration as a factor in textile dye bioremoval by Aspergillus niger


Wafaa M. Abd El-Rahim1*, Ola Ahmed M. El-Ardy2 and Hassan Moawad1




1Agricultural microbiology Department, National Research Center (NRC), NRC, Egypt.
2Chemical Engineering and Pilot Plant Department, NRC, Egypt.


Email: wafaa10m@hotmail.com






 Accepted: 08 January 2008  Published: 31 January 2008

Copyright © 2008 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Experiments were done to study the bioremoval/ biosorption of dis-azo dye byAspergillus niger strain 20 in two concentrations using 5 liter bioreactor at five aeration rates. The experimental results are compared for various operating conditions. The dye used was direct brown and the inlet air flow rate was: 1/8, ¼, ½, 1, 2 v/v/min. The aeration rate of ½ v/v/min yielded 9.2 g fungal biomass and removed 72 % of the dye. Increasing of the aeration rate to 2 v/v/min increased the removal to 77%, whereas the biomass was decreased markedly at the end of the incubation time. The results also indicate that the fungal biomass obtained at the three other air flow rates was more or less the same after 3 days of incubation. The obtained results indicate that air flow rates 1/8, ¼ and ½ v/v/min gave better dye bioremoval as compared with the high aeration rate (1, 2 v/v/min) and can be recommended for dis-azo dye bioremediation.  Isotherm experiments were conducted to determine the sorbents-desorption behavior of examined dye from aqueous solutions using Langmiur and Freundlich equations.

 

Key words: Textile dyes, removing, dis-azo, batch reactor, modeling, bioremediation.


APA (2008). Aeration as a factor in textile dye bioremoval by Aspergillus niger. African Journal of Biochemistry Research , 2(1), 030-039.
Chicago Wafaa M. Abd El-Rahim, Ola Ahmed M. El-Ardy and Hassan Moawad. "Aeration as a factor in textile dye bioremoval by Aspergillus niger." African Journal of Biochemistry Research 2, no. 1 (2008): 030-039.
MLA Wafaa M. Abd El-Rahim, Ola Ahmed M. El-Ardy and Hassan Moawad. "Aeration as a factor in textile dye bioremoval by Aspergillus niger." African Journal of Biochemistry Research 2.1 (2008): 030-039.
   
DOI
URL http://academicjournals.org/journal/AJBR/article-abstract/B9C21A89221

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