Description: Certain photosynthetic bacteria (PSB), for example, Rhodopseudomonas capsulata, evolve hydrogen when placed in an anaerobic environment with light and a suitable organic substrate. An engineering effort to use such bacteria for large-scale hydrogen production from sunlight is described. A system to produce 28,000 m/sup 3//day (1 x 10/sup 6/ ft/sup 3//day) of hydrogen has been designed on a conceptual level and includes hydrogen cleanup, substrate storage, and waste disposal. The most critical component in the design is the solar bacterial reactor. Several designs were developed and analyzed. A large covered pond concept appears most attractive. Cost estimates for the designs show favorable economics.
Date: February 1, 1982
Creator: Herlevich, A. & Karpuk, M.
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