HYDROGEN-PRODUCTION BY PHOTOSYNTHETIC MICROORGANISMS

The algal fermentation conditions for the hydrogen production were inv estigated to improve the photobiological hydrogen production by a comb ination of a marine green alga Chlamydomonas sp. MGA1G1 and a marine p hotosynthetic bacterium Rhodopseudomonas sp. W-1S. The scaling-up of o ur biophotolysis system with algal-bacterial combination was carried o ut. The stably sustained starch accumulation and degradation in the al gal cells and hydrogen photoproduction from algal fermentation product s by photosynthetic bacteria occurred in an alternating light-dark cyc le.