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" ... Good question. Vegetable oil feedstock costs over US$100/bbl, whereas Brent crude is just over US$40/bbl – do the maths. Also, biodiesel units only produce the light end of the barrel and volumes are only about a quarter of those of the crude oil-based refinery they replace. They lose out on economies of scale. ... "
" ... Gregory Constantine: Thanks Afdhel. When we looked at where our technology could help push the needle forward for humanity in the long term, we wanted to tackle space exploration. Air Stellar is a business unit within our company that focuses on utilizing our CO2 conversion technology in outer space as either a renewable fuel or feedstock to help produce other critical materials like glucose. ... "
" ... One estimate, from Morgan Stanley, an investment bank, is that scrap steel currently represents just 20% of the feedstock consumed by Chinese steel mills compared with 32% in Japan with its more developed economy. ... "
" ... “The environmental, economic and social consequences of such a distributed oil well technology,” the authors suggest, “should contribute to the practical realization of chemical fuels from carbon dioxide as feedstock in a circular sustainable economy of the future.” ... "