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METHODS AND SYSTEMS FOR PRODUCING PRODUCTS USING ENGINEERED IRON OXIDIZING BACTERIA AND COPPER METAL

United States Patent Application

20160362706
A1
View the Complete Application at the US Patent & Trademark Office
Methods and systems for producing a particular biofuel or a particular chemical using genetically modified iron-oxidizing bacteria (IOB) and copper as a redox mediator are disclosed. In some embodiments, the methods include the following: providing an IOB that have been genetically modified to enable them to generate the particular biofuel or the particular chemical; feeding a first source of ferrous iron to the IOB; feeding water, carbon dioxide, and oxygen to the IOB; producing one of the particular biofuel and the particular chemical, ferric iron, and an IOB biomass; providing a first source of copper metal; solubilizing the first source of copper metal to produce cupric ions and reduce the ferric iron to ferrous iron; electrochemically reducing the cupric ions to produce a second source of copper metal; feeding ferrous iron reduced from the ferric iron to the IOB; and feeding the second source of copper metal to the IOB.
West, Alan (Tenafly, NJ), Banta, Scott (Fairfield, CT)
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK (New York NY)
15/ 248,426
August 26, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with government support under contract numbers 0206-1565, DE-AR0000060, and DE-AR0000553 awarded by the Department of Energy. The government has certain rights in the invention.