Biohydrogen
ANAEROBIC PHASED SOLIDS (APS) DIGESTOR SYSTEMS
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Environmental Benefit
Presently, commercial hydrogen primarily extracts from petrochemical resources, releasing sequestered carbon
dioxide (CO2), a green house gas, in the process.
Biohydrogen Development Project
During the early stages of development of the California’s “Hydrogen Highway” infrastructure, the demand for pure
biohydrogen as a vehicle fuel will be lower than the demand for other automotive fuels such as compressed natural
gas (methane gas). However, the number of automobiles requiring biohydrogen fuel will increase with time and the
APS digester’s flexibility to produce biohydrogen, methane and / or blended-biofuels demonstrates it can be a principle
factor in the early establishment of the “Hydrogen Highway”.
The focus of this project is to:
o Advance the current research
o Develop design and operational parameters
o Demonstrate a commercial system for stable, predictable and practical production of biohydrogen, methane and
other biofuels
o Demonstrate how these systems will play a critical role in the development of the renewable hydrogen economy.
The Biohydrogen and biofuels development project is designed to demonstrate the ability to develop the hydrogen
economy and the California Hydrogen Highway program based on utilizing renewable fuel sources.
The project will involve design modifications to the existing APS digester demonstration system located at UC Davis.
The design will allow for the processing of various organic waste materials for the production of biohydrogen.
Additionally, the biohydrogen either will be blended with biomethane, or will be fully converted to methane to operate a
fuel cell or internal combustion engine.
Formation of the Biohydrogen / Biofuels Project Team
The establishment of a unique teaming arrangement allows the development of an APS Digester Biohydrogen –
Biofuels project at the UC Davis campus.