Category Archives: Peak Biofuels

Fill ‘er up with kelp?

Posted on July 12, 2024 by

Preface. Here are just a few of the dozens of reasons why seaweed can’t make a dent in energy supplies: A negative return on investment like corn ethanol No commercial biofuels are being made from it. Kelp is mainly used … Continue reading →

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Why biofuels can not scale up to replace petroleum

Posted on May 22, 2023 by

Preface. This is my favorite paper on why we can’t replace crude oil with biofuels.  Of course, oil is a biofuel. But alas, not renewable, since it took over 100 million years to make them. Every year we burn fossil … Continue reading →

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Why it is hard to replace diesel with biodiesel

Posted on April 12, 2022 by

Biodiesel is the great hope, our main hope, the only renewable fuel of all the many options, and the closest to the diesel essential for rail, trucks, and ships to do the actual work of civilization. The U.S. produces over … Continue reading →

Posted in Biodiesel, Food production, Oil, Peak Biofuels, Peak Food, Transportation, Water | Tagged , , | 1 Comment

Why the world can’t run on biodiesel from algae

Posted on February 19, 2022 by

Preface. This is an article I published in a peer-reviewed journal, and it’s also similar to “Chapter 25 Biodiesel from Algae” in my book Life After Fossil Fuels: A Reality Check on Alternative Energy. And within this post is a … Continue reading →

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Biogas from cow manure is not a solution for the energy crisis

Posted on July 17, 2021 by

Preface. Smil’s article about biogas sums up why it won’t contribute to energy shortages as fossils decline. Biogass doesn’t scale and is easy to muck up. Hayes (2015) also makes this case, pointing out that even if every ounce of … Continue reading →

Posted in Biofuels, Biomass EROI, Peak Biofuels, Pollution | Tagged , , , , , | 2 Comments

Biomass charcoal to create manufacturing high heat

Posted on January 11, 2020 by

Preface.  The following industries need heat of up 1800 to 3275 F: Chemicals, Forest products, Iron and Steel, Plastics & Rubber, Fabricated metals, Transport Equipment, Computers, electronics & equipment, Aluminum, Cement, Glass, Machinery, Foundries. For nearly all of these products, … Continue reading →

Posted in Manufacturing & Industrial Heat, Peak Biofuels, Wood | Tagged , , , | 3 Comments

Peak soil: Industrial agriculture destroys ecosystems and civilizations: Biofuels make it worse

Posted on August 31, 2017 by

Preface. In 2018 I thought it was time to reorganize this post, as it grew more and more bloated and disorganized with new information. Eventually it turned into my 2021 book Life After Fossil Fuels: A Reality Check on Alternative … Continue reading →

Posted in Alternative Energy, Biofuels, Biomass, Energy, Peak Biofuels, Peak Topsoil, Soil | Tagged , , , , , , , , , , , , | 2 Comments