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Biohydrogen production using mutant strains of Chlamydomonas reinhardtii: The effects of light intensity and illumination patterns

Paper ID Volume ID Publish Year Pages File Format Full-Text
3098 150 2014 6 PDF Available
Title
Biohydrogen production using mutant strains of Chlamydomonas reinhardtii: The effects of light intensity and illumination patterns
Abstract

•Microalgal biohydrogen production.•Enhanced biohydrogen production.•Importance of light intensity.•Importance of illumination pattern.•Importance of D1 protein mutations.

Biohydrogen production from microalgae still remains to be discussed and examined more specifically, given that it is one of the most important energy carriers possessing environmental-friendly and sustainable characteristics. Although microalgae species capable of biohydrogen production do exist, Chlamydomonas reinhardtii is considered to be one of the most promising eukaryotic H2 producers, and can serve as a model organism for such studies. Unfortunately, even if the metabolic basis and environmental conditions for this process are well defined, the sustainability of biohydrogen production is not straightforward. At this point, genetic engineering tools must be efficacious in order to enable mutant strains to reach desired amounts of biohydrogen. In this study, different light intensities, illumination patterns and Chlamydomonas strains such as CC124 and D1 protein mutant strains (D240, D239-40, D240-41) were investigated for the production of biohydrogen. The results showed that an increase in the light intensity shortened the lag phase of hydrogen production. With some minor differences, biohydrogen production was also found to be affected by the illumination pattern. On the other hand, maximum biohydrogen production was reached with a double-deletion mutant strain of D239-40, which attained a total production of 490 ± 10 mL L−1 hydrogen and was followed by the other double-deletion mutant D240-41 that attained a total production of 388 ± 10 mL L−1.

Keywords
Microalgae; Biohydrogen; Anaerobic process; Bioconversion; Bioreactions; Chlamydomonas reinhardtii
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 92, 15 November 2014, Pages 47–52
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
Online Support
Any Questions? feel free to contact us