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30 comments on Neste Moves Forward with Green Diesel

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Brother Kornhoer on June 16, 2008 - 11:36am Permalink | Subthread | Comments top

It seems to me that this process could use a algae biomass input, thus bypassing the problems with open-pond algae production having low oil content due to wild algae contamination - with the green diesel hydrocracking process, you don't require a high vegetable oil content, just biomass. Wild fast-growing algae that can be grown in salty or brackish pond water would be a feedstock that would not compete with food crops, and with potentially very high productivity per unit area.

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eric blair on June 16, 2008 - 4:42pm Permalink | Subthread | Parent | Comments top

just biomass.

That is not the understanding I have. I believe you need 'oil' of some sort.

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Robert Rapier on June 16, 2008 - 5:36pm Permalink | Subthread | Parent | Comments top

That's correct. For the hydrocracking process, you require oil. For the more general BTL process in which biomass is first gasified to syngas, any form of biomass will do. Both hydrocracking and BTL have fallen under the "green diesel" moniker, but they are very different processes. The only similarity is that both result in a hydrocarbon diesel.

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Brother Kornhoer on June 16, 2008 - 10:14pm Permalink | Subthread | Parent | Comments top

Thanks for the clarification.

I suppose my point still stands for the BTL gasification process.

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30 comments on Neste Moves Forward with Green Diesel

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