Comment Re:Again, Why? (Score 1) 124
I agree that biodiesel has more energy density than ethanol.
Perhaps you are thinking of the McGyan Process that continuously converts various lipid feedstocks such as old cooking oil, tallow, or algae into biodiesel. The process also requires alcohol as a feedstock. It does not process cellulose waste.
Most ethanol to cellulose processes require the cellulose to be first broken down by acid. There are also catalysts for converting cellulose under development in the lab, but the wood waste, switch grass, or whatever source of cellulose they are trying requires a lot of grinding and pulping before they can get started.
The Zymetis process for cellulostic ethanol appears that it could make a good complement to the McGyan process for biodiesel.
Perhaps you are thinking of the McGyan Process that continuously converts various lipid feedstocks such as old cooking oil, tallow, or algae into biodiesel. The process also requires alcohol as a feedstock. It does not process cellulose waste.
Most ethanol to cellulose processes require the cellulose to be first broken down by acid. There are also catalysts for converting cellulose under development in the lab, but the wood waste, switch grass, or whatever source of cellulose they are trying requires a lot of grinding and pulping before they can get started.
The Zymetis process for cellulostic ethanol appears that it could make a good complement to the McGyan process for biodiesel.