Categories
-
Recent Posts
- Self-driving cars in San Francisco cause accidents, congestion, and more
- “Star Wars” missile defense won’t stop incoming nukes
- Lab-grown meat is energy intensive – and up to 25 times worse for the climate than beef
- The Biblical Revelations, critical thinking, and how this affects us today
- Why the U.S. is ignoring nuclear winter in nuclear policies & strategies
- Oil choke points vulnerable to war, chaos, terrorism, accidents, & piracy
- Nuclear weapons must be reduced or we risk nuclear winter
- Fusion is already running out of fuel
- Peak Oil is Officially Here! World oil production peaked November of 2018
- Wood, the fuel of preindustrial societies, is half of EU renewable energy
- Rare Earth updates: recent research on why complex & intelligent life are rare in the Universe
- Book review of “Chip War” and the Fragility of microchips
- The tremendous material and energy toll of the digital economy
- Nuclear attack on U.S. could kill 90% of Americans
- What percent of Americans are rational?
Category Archives: Biomass
Power density of biomass, wind, & solar take too much land to replace fossil fuels
Volumetric versus specific energy density for selected energy carriers. Source: Palmer, G. 2020. Energy storage & civilization: a systems approach. Springer. Preface. Vaclav Smil writes “The fact that wind, solar, and biomass have incredibly low energy density per square meter … Continue reading
Posted in Alternative Energy, Biomass, Coal, Hydropower, Natural Gas, Oil
Tagged alternative energy, biodiesel, biomass, coal, ethanol, natural gas, oil, renewable energy
1 Comment
Vaclav Smil on wood
[ I’ve extracted bits about wood from Smil’s book about materials below, read the book for the larger context. Enormous amounts of wood were used in former civilizations with much smaller populations than today, so it’s clear we can’t go … Continue reading
Overview of the renewable fuel standard, U.S. House hearing 2013
House 113-61. June 26, 2013. Overview of the renewable fuel standard: Government perspectives. House of Representatives. [Excerpts from the 104 page transcript follow] Key points: The implicit premise that cellulosic and other advanced biofuels would be available in significant quantities … Continue reading
Posted in Renewable fuel standard RFS, U.S. Congress Transportation
Comments Off on Overview of the renewable fuel standard, U.S. House hearing 2013
Peak soil: Industrial agriculture destroys ecosystems and civilizations: Biofuels make it worse
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 aquifer depletion, biodiesel, biofuel, climate change, EROEI, EROI, erosion, ethanol, fertilizer, hunger, peak soil, pollution, topsoil
2 Comments
No, we’re not going to make ethanol out of CO2 and stop global warming
Preface. In the article below Robert Rapier debunks the research paper proposing to convert CO2 into ethanol. The researchers were honest and said “that the process is unlikely to be economically viable.” But the press spun it into a major … Continue reading
Posted in Biofuels, Biomass EROI, Critical Thinking, Far Out, Other Experts
Tagged critical thinking, EROEI, ethanol
2 Comments
Why studies come up with different Energy Returned on Invest (EROI) results: can it be fixed?
[ There are many issues with biofuels beyond their trivial to negative energy return on investment (EROI). In Peak Soil I point out that current industrial farming techniques are destroying topsoil about 15 times faster than pre-fossil fuel economies — … Continue reading
Posted in Biofuels, Biomass EROI, Charles A. S. Hall
Tagged biomass, EROEI, EROI, ethanol
Comments Off on Why studies come up with different Energy Returned on Invest (EROI) results: can it be fixed?
How burning biomass made us human
[ This is a book review of Wrangham’s “Catching Fire: How cooking made us human”. Fire enabled us to have larger brains from the increased calories in cooked food, held carnivores at bay, killed bacteria, and gave us many other … Continue reading
Are biofuels a sustainable and viable energy strategy?
Preface. In 2000, Melanie Kenderine at the U.S. Department of energy stated that: “This nation has abundant biomass resources (grasses, trees, agricultural wastes) that have the potential to provide power, fuels, chemicals and other bio-based products” (136). That’s a good … Continue reading
Posted in Biofuels, EROEI Energy Returned on Energy Invested
Tagged biofuel, EROEI, EROI, net energy, subsidies
Comments Off on Are biofuels a sustainable and viable energy strategy?
Department of Energy algal biofuels roadmap: A summary
Preface. If you really want to get into the weeds about the details of why algal fuels have failed to produce biofuels, read this 140 page paper. Alice Friedemann www.energyskeptic.com Women in ecology author of 2021 Life After Fossil Fuels: … Continue reading
Effects of biodiesel on diesel engines: John Deere
[ Since petroleum is finite, the most important focus of U.S. energy research ought to be keeping trucks operating, since civilization ends when trucks stop running. Ideally this would be done with a “drop-in” fuel that can be burned in … Continue reading
Posted in Biodiesel, Trucks
Tagged biodiesel, diesel engine, John Deere
Comments Off on Effects of biodiesel on diesel engines: John Deere