I don't know what the process in the article is, so I cannot answer that question.
We can conclude the Virent process is not competitive at current prices (or else it would be done more widely.) The more relevant question is would it be cheap enough to work in a world without fossil fuel net CO2 emission. It would have to be cheaper than obtaining the fuel from oil, followed by direct air capture and sequestration of CO2, for zero net emission.
We can conclude the Virent process is not competitive at current prices (or else it would be done more widely.) The more relevant question is would it be cheap enough to work in a world without fossil fuel net CO2 emission. It would have to be cheaper than obtaining the fuel from oil, followed by direct air capture and sequestration of CO2, for zero net emission.