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I can scarcely believe that EROEI for biofuels is negative. Can you provide source for this?
by xyzzyz 6y ago
I can scarcely believe that EROEI for biofuels is negative. Can you provide source for this?
- ArkVark 6y agohttp://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.468.2464&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.468... EROEI of 1.07 from this metastudy for Corn Ethanol. Society needs at least an EROEI of 3:1, so corn ethanol, at least, is a boondoggle.
- credit_guy 6y agoI'm not sure how much I can trust that document. It's written by some academics, they might or might not have an agenda. Here's a study done by the USDA, published in 2016 and describing the state of the affairs in 2015 https://mnbiofuels.org/images/2015EnergyBalanceCornEthanol.pdf https://mnbiofuels.org/images/2015EnergyBalanceCornEthanol.p... Bottom line: ignoring any carbon credits, the return on energy using the existing facilities in Iowa is 2.3 (page 14, bottom of 3rd column).
- Animats 6y agoSee [1]. Numbers vary, but ethanol from corn seems to be in the 0.5 to 1.5 range. Which is not very good. [1] https://www.buildinggreen.com/news-article/energy-return-investment https://www.buildinggreen.com/news-article/energy-return-inv...