Enhancement of hydrogen photoproduction by marine chromatium sp. Miami PBS 1071 grown in molecular nitrogen
The marine Chromatium sp. Miami PSB 1071 was grown on molecular nitrogen as the sole source of nitrogen. These cells exhibited active hydrogen production in the light from hydrogen donor substances such as thiosulfate, sulfide, acetate, fumarate, malate and succinate. Hydrogen was produced as 2 to 3 times higher rates when two donor substances, succinate and thiosulfate (or succinate and sulfide) were used together. Hydrogen production rates as high as 6 ..mu..moles hydrogen/mg protein/hr were observed in cells from the middle of the logarithmic growth phase cells. These rates were 6 to 10 times higher than those of stationary growth phase cells. Hydrogen production was light dependent and hydrogen was consumed in the dark at a slower rate. High rates of hydrogen production were observed at seawater salinities and high light intensities. The response of growth and nitrogen fixation in this strain to environmental regulation suggest that it could be successfully used in saltwater based bio-solar hydrogen production systems.
- Research Organization:
- Miami Univ., FL (USA). Rosenstiel School of Marine and Atmospheric Sciences
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 6602084
- Report Number(s):
- CONF-800793-1
- Resource Relation:
- Conference: 6. international fermentation symposium and 5. international symposium on yeasts, London, Ontario, Canada, Jul 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
HYDROGEN PRODUCTION
BIOPHOTOLYSIS
PHOTOSYNTHETIC BACTERIA
ACETATES
AQUACULTURE
FUMARIC ACID
MALIC ACID
NITROGEN FIXATION
PH VALUE
SALINITY
SALTS
SEAWATER
SUCCINIC ACID
SULFIDES
THIOSULFATES
BIOCONVERSION
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
DICARBOXYLIC ACIDS
HYDROGEN COMPOUNDS
HYDROXY ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
SULFUR COMPOUNDS
WATER
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
080106 - Hydrogen- Production- Biosynthesis & Photochemical Processes