Abstract: The disclosure is directed to a process and an apparatus for recovering energy from the low energy density waste gas stream. The process and the apparatus allow a thermal oxidizer to oxidize the low energy density waste gas stream using a low energy density fuel gas such as syngas, BF gas, or biogas without the need for auxiliary high energy density sources.

Abstract: An integrated process and system for the production of at least one gas fermentation product from a gaseous stream has been developed. The disclosure provides improved carbon utilization through both the recycle of a bioreactor tail gas via various different flow schemes and the employment of a CO2 to CO conversion system such as a reverse water gas shift unit. Recycling of the bioreactor tail gas and employment of a CO2 to CO conversion process provides for favourable H2:CO molar ratios of the feed to the gas fermentation bioreactor(s) for enhanced production of fermentation products. Bypass embodiments provide for optimal sizing of the reverse water gas shift unit to minimize cost.

Abstract: The disclosure provides methods to improve the economics of the gas fermentation process. A fermentation process is integrated with an industrial or syngas process and an reverse water gas shift process. An intermittent supply of reverse water gas shift process feedstock from the reverse water gas shift process is provided to the bioreactor for fermentation. The reverse water gas shift process feedstock may supplement or partially displace the C1 feedstock from the industrial or syngas process. Whether the reverse water gas shift process feedstock supplements or displaces the C1 feedstock may be based upon a function of the cost per unit of the C1 feedstock, the cost per unit of the reverse water gas shift process feedstock, and the value per unit of the fermentation product, or may depend upon the target gas ratio of the feedstock to the gas fermentation process.

Abstract: Disclosed are compositions, methods, and systems for propagating microorganisms for fermentation.

Abstract: Disclosed are compositions, methods, and systems for propagating microorganisms for fermentation.

Abstract: Disclosed are compositions, methods, and systems for propagating microorganisms for fermentation.