Quite a few biofuel output pathways emit an basically pure stream of CO2 being an inherent part of their method. This kind of routes include things like ethanol fermentation (both crop-based and cellulosic) and bio-FT. The large focus of CO2 implies that the cost of capturing the CO2 is minimal, https://keto-diet47788.blogocial.com/a-review-of-biofuel-62779912