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V22. ABE fermentation for butanol recovery by Pervaporation.

Credit to the owner of the video. This is not mine, but in my humble opinion it is worth sharing because the topic here is about biobutanol. A biofuel that was said to be a 1:1 replacement for spark-ignited engines. Biobutanol is better than bioethanol because its 4-carbon atom offers more calorie than the 2-carbon atom of the ethanol.  However, biobutanol gives off more CO2 per mole compared to ethanol.