Re: How long
From the description it sounds like it took around 30 minutes. Presumably the current limiting factors are energy input and size. Ideally, you'd also want to be able to source locally some kind of reduction agent in the hope of being able to reduce the temperature required. However, seeing as CO2 to CO is considered an essential part of our own renewables strategies, it's to be hoped that improvements here can be expected .
Biting the hand that feeds IT
