Smarta biodrivmedel i USA
I USA, som på andra ställen, använder man inte de bästa metoderna för att producera etanol som drivmedel. Det finns emellertid stora förhoppningar och planer både på en mer omfattande användning och på betydligt bättre teknik för produktionen.
Tröskelvärdena för emissionsminskning ligger mellan 20 och 60% beroende på metod för framställning, se bilder.
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