Algal hydrogen production

Ghirardi, M. L., Togasaki, R. K. and Seihert, M. (1997) Oxygen sensitivity of algal hydrogen production. Appl. Biochem. BiotechnoL, 63-5, 141-51. 

Two-Phase Photobiological Algal Hydrogen Production System... 

Hahn, J.J., Ghirardi, M.L. and Jacoby, W.A. 2004. Effect of process variables on photosynthetic algal hydrogen production. Biotechnol. Progr. 20, 989-991. 

Zhang, L. and Melis, A. 2002. Probing green algal hydrogen production. Phil. Trans. R. Soc. Lond. Biol. Sci. 357, 1499-1509. 

STRATEGIES FOR IMPROVING OXYGEN TOLERANCE OF ALGAL HYDROGEN PRODUCTION... 

Strategies for Improving Oxygen Tolerance of Algal Hydrogen Production... 

Zhang, L., Melis, A. (2002). Probing green algal hydrogen production. Philosophical Transactions of the Royal Society of London B Biological Sciences, 357, 1499—1507. discussion 1507—1511. 

For a stand-alone photobiological (sulfur-deprived, algal) H2-production facility producing 300 kg/day of H2, the total capital investment was estimated to be 5 million with a H2 selling price of approximately 14/kg of hydrogen and a 15% return on investment. This system assumed moderate improvements in the H2-production rate and included PSA purification with high-pressure compressed H2 storage. The total photobioreactor area was 110,000 m with a 10-cm pond depth, 0.2 g/1 cell concentration, and 10/m reactor cost. ... 

Ghirardi M.L., Kosourov S., and Siebert M. (2001) Cyclic photobiological algal H2-production. Proceedings of the 2001 DOE Hydrogen Program Review, NREL/CP-570-30535. 

Figure 2. Hydrogen production in an outdoor five liter bioreactor. The reactor contained four iiters of algal suspension. The black bands indicate night time. The reactor contained 2,500 mg dry wt. cells. The reactor was flushed twice with argon, as described above, and the temperature was 32.50C.

The activity of chlorine as a bactericide is decreased by the presence of large quantities of algal slimes and certain process leaks (for example, hydrogen sulfide from petrochemical industries, ammonium compounds from fertilizer production, or citrates from the bioengineering manufacture of citric acid, but not hydrocarbon oil leaks from an oil refinery). 

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