The important question is how much energy you need to inject to produce a given amount of fuel. This information is probably crucial regarding the viability of the process, isn't it?
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The important question is how much energy you need to inject to produce a given amount of fuel. This information is probably crucial regarding the viability of the process, isn't it?
It is undoubtedly a determining aspect, at the beginning the process was only used if there were no other sources of hydrocarbons to obtain fuels, but nowadays the environmental requirements justify its implementation.
That's clear. My only point is that we need to know the full equation before claiming anything is clean or not (this is especially true for energy).