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Degradation of 2,4-dinitrophenol by a mixed culture of photoautotrophic microorganisms

Paper ID Volume ID Publish Year Pages File Format Full-Text
5072 279 2006 6 PDF Available
Title
Degradation of 2,4-dinitrophenol by a mixed culture of photoautotrophic microorganisms
Abstract

2,4-Dinitrophenol (2,4-DNP) is frequently used as a starting material in the production of pesticides, herbicides, and dyes. This compound is toxic to animals, plants, and microorganisms because it inhibits respiration in mitochondria and photophosphorylation in chloroplasts. Anabaena variabilis showed a high ability to remove 2,4-DNP in the concentration range of 5–150 μM under continuous light. However, 2-amino-4-nitrophenol (2-ANP), which is a degradation product of the 2,4-DNP removal by A. variabilis, accumulated in the culture. Although 2,4-DNP was completely removed when incubation was with a light and dark cycle, accumulation of 2-ANP was observed. By screening various microalgae and cyanobacteria for their ability to remove 2-ANP, we found that Chlamydomonas reinhardtii and Anabaena cylindrica showed the highest ability. However, a high concentration of 2-ANP remained when C. reinhardtii was cultivated with A. variabilis. On the other hand, a mixed culture of A. variabilis and A. cylindrica could remove 2,4-DNP completely, and only a low concentration of 2-ANP was detected compared to a culture of A. variabilis. Therefore, a cyanobacterial mixed culture of A. variabilis and A. cylindrica is expected to be useful for the removal of 2,4-DNP from industrial wastewater.

Keywords
2,4-Dinitrophenol; 2-Amino-4-nitrophenol; Anabaena variabilis; Anabaena cylindrica; Mixed culture
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Degradation of 2,4-dinitrophenol by a mixed culture of photoautotrophic microorganisms
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 29, Issues 1–2, 1 April 2006, Pages 157–162
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us