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paganelyesterday at 11:20 PM6 repliesview on HN

Also, you can't make plastics out of wind power or out of solar, you still need the "petro-" that's part of the petrochemical industry.


Replies

cluckindanyesterday at 11:28 PM

You can use solar to convert CO2 into syngas and do a Fischer-Tropsch synthesis followed by polymerization to get plastics.

zihotkiyesterday at 11:37 PM

This is false, you can make many plastics without fossil sources (pla, bio-pet, bio-abs, etc). The only challenge is cost and scale - it's cheaper and easier to use existing processes.

nswangotoday at 12:07 AM

But making plastics using renewable energy and fossil hydrocarbons for feedstock does not exacerbate the greenhouse effect, unless you burn them when you've finished with them.

Arguably plastics are a stable, cheap and useful carbon sink and if climate is the overriding ecological priority we should be making as many as we can and recycling as few as possible.

TheOtherHobbesyesterday at 11:30 PM

You can make plastics out of cellulose, which is available from plant sources or organic (algae) bioreactors.

It would take a while to retool the plastics industry to use organic sources, but it's not at all impossible.

Zigurdtoday at 12:02 AM

Plastic packaging can be substituted. Engineered plastics are a tiny fraction of petroleum.

jjk166today at 12:17 AM

Using renewables means you're burning up less of your plastic feedstocks.