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I am not a native English speaker and the article seems to use a decent amount of scientific language.

Therefore I've might have missed it, but what do they do with the captured carbon?

Can it be used for new materials or products, or will it need to be stored indefinitely?

Here are relevant links to Wikipedia on CO2 storage:

To curb global warming, the best option is likely to store it underground, e.g. in reservoirs previously used for oil or gas production.