Carbon dioxide (CO2) by-product from ethanol dominates the sourcing map in the US compared to other source types, where next in line includes sources from ammonia and natural CO2 gas/pipeline facilities.
I have been pleased to see that new sources continue to arise from existing corn and grain-based fermentation sources; albeit the absence of other feedstocks available might be described as noticeable.
At the time of writing, for example, Airgas has made a deal with Pacific Ethanol to purchase raw gas; using an intermediate party called Kodiak Carbonic as the party to build this plant, stated to cost $6m and expected to be operational by year-end. Also interesting with respect to this deal, is for Kodiak to play the role, where it apparently puts up the lion’s share of the investment in this deal. Maybe this is the new trend – for the gas company to seek funding from outside parties for new CO2 plants in the future.
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