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Direct approach for bioprocess optimization in a continuous flat-bed photobioreactor system

Paper ID Volume ID Publish Year Pages File Format Full-Text
23662 43460 2012 7 PDF Available
Title
Direct approach for bioprocess optimization in a continuous flat-bed photobioreactor system
Abstract

Application of photosynthetic micro-organisms, such as cyanobacteria and green algae, for the carbon neutral energy production raises the need for cost-efficient photobiological processes. Optimization of these processes requires permanent control of many independent and mutably dependent parameters, for which a continuous cultivation approach has significant advantages. As central factors like the cell density can be kept constant by turbidostatic control, light intensity and iron content with its strong impact on productivity can be optimized. Both are key parameters due to their strong dependence on photosynthetic activity.Here we introduce an engineered low-cost 5 L flat-plate photobioreactor in combination with a simple and efficient optimization procedure for continuous photo-cultivation of microalgae. Based on direct determination of the growth rate at constant cell densities and the continuous measurement of O2 evolution, stress conditions and their effect on the photosynthetic productivity can be directly observed.

► Flat-bed photobioreactor for cyanobacteria and green algae. ► Fully automated continuous cultivation system for phototrophic organisms (microalgae). ► Combined optimization of cell density and light input. ► Direct observation of stress conditions by simultaneous measurement of growth rate and oxygen evolution enables to minimize negative effects by photoinhibition.

Keywords
Chl, chlorophyll; PAR, photosynthetically active radiation; PS1, photosystem 1; PS2, photosystem 2Bioprocess optimization; Turbidostat; Photobioreactor; Synechocystis PCC 6803; Growth rate
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Direct approach for bioprocess optimization in a continuous flat-bed photobioreactor system
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 162, Issue 1, 30 November 2012, Pages 156–162
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
Online Support
Any Questions? feel free to contact us