Captured carbon as a feedstock:
The researchers checked out twenty large-volume chemicals made of fossil-fuel-based hydrocarbons, together with paraxylene, toluene, propylene, and alkane. They then checked out how those industrial chemicals may be fashioned while not the direct use of fossil fuels. Generally, this needs some combination of capturing CO2 and using renewable electricity to reform that CO2 to an artificial hydrocarbon. The researchers divided potential ways of captured-carbon chemical creation into "technology readiness levels”.
High-TRL ways will be enforced within the near future however typically have less of an effect on carbon emissions, whereas low-TRL ways need a lot of investment and study before they'll be deployed, however they create chemical creation nearly climate-neutral. What the researchers found is that there's a transparent technical path to reducing the chemical industry's emissions with carbon capture, however real-world economic science restricted the particular preparation of those technologies.
Need a lot of power!
Creating artificial, "green" hydrocarbons from captured CO2 would need monumental amounts of renewable energy. "Many of those are settled in Africa, Australia, and South America, where the number of accessible renewable energy resources is over fifty times more than the present total primary energy demand," the paper notes. Thus there appears to be a decent match there. [Even the installation of electric boilers to substitute fossil fuel boilers reduces the climate impact overall hydrogen-based CCU [carbon capture and utilization] technologies except for the CO2-based production of paraxylene and phenylethylene," the paper says.
Ultimately, a one-size-fits-all approach to decarbonizing the industry won't meet the carbon-reducing priorities that our world wants.
Tags : industrial chemicals, green chemicals, hydrocarbons ,