Home|Journals Follow on Twitter| Subscribe to List

Directory for Medical Articles

Open Access


Biodegradation of some dyes by the micro algal species (cyanobacteria) Pseudo anabaena sp. and Microcystis aeruginosa

Mostafa M. El-Sheekh; Ghada W. Abou-El-Souod; Hayam El Asrag.

The processes of biodegradation have widely used to remove hazardous material from aquatic and soil system is an environmental friendly tool. The present study was conducted to investigate the decolorization and biodegradation of some dyes using some microalgal species isolated from pollutant industrial regions. Two microalgal species (cyanobacteria) were isolated and were identified as Pseudo anabaena sp. and Microcystis aeruginosa. The ability of the two algae to remove and decolorize Disp.orange 2RL, reactive yellow 3RN, Reactive black NN and Tracid red BS were investigated. The results revealed that the removal of these dyes depends on the algal species, its growth rate and the structure of dyes. The maximum decolorization was observed in Reactive black NN and Disp.orange 2RL by M. aeruginosa 55.12 % and 65.07 %, respectively after 7 days incubation. Also Pseudo anabaena sp. decolorized Reactive yellow 3RN and Tracid red BS by 58.47 % and 78.44%, respectively. Azo reductase enzyme of algae which responsible for degradation of azo dyes into aromatic amine by cleavage the azo linkage was estimated. The results showed that treatment of M. aeruginosa with Disp.orange 2RL induced the azo reductase enzyme by 68.04% and Pseudo anabaena sp. with Reactive yellow 3RN by 55.64 % after 7 days of incubation. The degradation product after decolorization was examined by spectroscopic analysis and Fourier transformed infrared spectroscopy analysis.

Key words: Biodegradation;dyes;microalgae;wastewater

Full text links

Share this Article

Journal of Environmental and Occupational Science


ScopeMed Home
Follow ScopeMed on Twitter
Article Tools
eJPort Journal Hosting
About ScopeMed
Terms & Conditions
Privacy Policy
Suggest a Journal
Publisher Login
Contact Us

The articles in Scopemed are open access articles licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Database Service for Scientific Publications. Copyright ScopeMed Information Services.
Scopemed Buttons