Showing posts with label biofuel. Show all posts
Showing posts with label biofuel. Show all posts

Monday, June 15, 2015

The End of Plenty


Nothing is more precious than balance, stability, and sustainability.  Today, we’re hanging by our fingernails to a skyrocket of intense insane change, and it’s the only way of life we’ve ever known.  Joel Bourne has spent his life riding the rocket.  He grew up on a farm, and studied agronomy at college, but sharp changes were causing many farmers to go bankrupt.  Taking over the family farm would have been extremely risky, so he became a writer for farm magazines.  Later, he was hired by National Geographic, where he has spent most of his career.

In 2008, he was assigned to cover the global food crisis, and this project hurled him into full awareness of the big picture.  The Green Revolution caused food production to skyrocket, and world population doubled in just 40 years.  Then, the revolution fizzled out, whilst population continued to soar.  Demographers have told us to expect another two or three billion for dinner in 2050.  Obviously, this had the makings of an excellent book, so Bourne sat down and wrote The End of Plenty.

The subtitle of his book is “The Race to Feed a Crowded World,” not “The Race to Tackle Overpopulation.”  A growing population thrills the greed community, and a diminishing herd does not.  Overpopulation is a problem that can be solved, and will be, either by enlightened self-restraint, by compulsory restraint, or, most likely, by the vigorous housekeeping of Big Mama Nature.  Feeding the current population is thrashing the planet, and feeding even more will worsen everything, but this is our primary objective.  We are, after all, civilized people, and enlightened self-restraint is for primitive savages who live sustainably in roadless paradises.

As incomes rise, the newly affluent are enjoying a more luxurious diet.  To satisfy this growing demand, food production must double by 2050.  “We’ll have to learn to produce as much food in the next four decades as we have since the beginning of civilization.”  Meanwhile, agriculture experts are not bursting with brilliant ideas.  “Producing food for more than 9 billion people without destroying the soil, water, oceans, and climate will be by far the greatest challenge humanity has ever faced.”  Bourne’s book describes a number of gigantic obstacles to doubling food production — or even maintaining current production.

Automobiles are more addictive than crystal meth.  Europeans guzzle biodiesel made from palm oil.  Americans are binging on corn ethanol.  The 2005 Energy Tax Act mandated the addition of biofuels to gasoline.  From 2001 to 2012, the ethanol gold rush drove corn prices from $1.60 to $8.28.  Not coincidentally, in 2008 food riots erupted in twenty countries.  The Arab Spring revolts began in 2011, a year of record harvests and record prices.  Today, almost 40 percent of the U.S. corn crop is being fed to motor vehicles — enough corn to feed everyone in Africa.  Experts predict that we’ll need four times more land for biofuels by 2030.

Crops require cropland, and almost all places ideal for farming are already in use, buried under roads and cities, or have been reduced to wasteland.  Every year, a million hectares (2.4 million acres) of cropland are taken out of production because of erosion, desertification, or development.  So, 90 percent of the desired doubling in food production will have to come from current cropland.  At the same time, the farm soils still in production have all seen better days.  Agriculture is an unsustainable activity that normally depletes soil quality over time.

Another obstacle is yield, the amount of food that can be produced on a hectare of land.  Between 1961 and 1986, cereal yields rose 89 percent, due to the Green Revolution.  But per capita grain production peaked in 1986.  Since then, population has been growing faster than yields.  Crop breeding experts are wringing their hands.  A number of indicators suggest that we are heading for “agricultural Armageddon,” but the experts remain silent, praying for miracles.  The biotech industry is focused on making huge profits selling seeds and poisons, not boosting yields.

Agriculture guzzles 70 percent of the water used by humans.  Irrigated fields have yields that are two to three times higher than rain fed fields.  Demand for water is projected to increase 70 to 90 percent by 2050, but water consumption today is already unsustainable.  “Over the next few decades, groundwater depletion could cripple agriculture around the world.”

Crop production is already being affected by climate change.  Research indicates that further warming will take a substantial toll on crop yields.  If temperatures rise 4°C, maybe half the world’s cropland will become unsuitable for agriculture.  Rising sea levels will submerge large regions currently used for rice production.

Meanwhile, population continues to grow, and some hallucinate it will grow until 2100.  In a nutshell, our challenge is “to double grain, meat, and biofuel production on fewer acres with fewer farmers, less water, higher temperatures, and more frequent droughts, floods, and heat waves.”  This must be done “without destroying the forests, oceans, soils, pollinators, or climate on which all life depends.”

Ladies and gentlemen, this is an outstanding book, and easy to read.  Most people have blind faith that innovation will keep the supermarkets filled forever.  Those who actually think a bit are focusing on stuff like solar panels, wind turbines, and electric cars.  Food is something we actually need, and it gets far less attention than it deserves.  By the end of the book, it’s impossible to conclude that everything is under control, and that our wise leaders will safely guide us through the storm.  Surprisingly, a few additional super-threats were not discussed in the book.

Bourne mentions that insects and weeds are developing resistance to expensive GMO wonder products, but stops there.  Big Mama Nature is the mother of resistance.  She never tires of producing new forms of life that are resistant to every toxin produced by science: insecticides, herbicides, fungicides, rodenticides, antibiotics.  Every brilliant weapon we invent will only work temporarily.  In terms of breeding new varieties of plants that are resistant to the latest biological threat, there are only so many tricks available.  The low-hanging fruit has already been used.  Just three plants enable the production of 80 to 90 percent of the calories we consume: corn, rice, and wheat. 

The global food system is heavily dependent on petroleum fuels, which are finite and nonrenewable.  There is no combination of biofuels or alternative energy that will come anywhere close to replacing oil.  In the coming decades, we will be forced to return to a muscle-powered food system.  We are entirely unprepared for this, and the consequences will be very exciting for people who eat food.

There is a similar issue with fertilizer.  Of the three primary plant nutrients, reserves of mineral phosphorus will be depleted first, and this will blindside conventional agriculture — no phosphorus, no life.  A hundred years ago, Chinese farmers used zero commercial fertilizer.  Every morning, long caravans of handcarts hauled large jugs of sewage from the cities to the fields.

In the end, readers are presented with two paths to the future.  One path looks like a whirlwind of big trouble, and this is not just a comic book doomer fantasy — it’s already blowing and rumbling.  The other path is happy and wonderful.  Humans will discover their legendary big brains, turn them on, shift industrial civilization into reverse, speed down the fast lane to genuine sustainability, and live happily ever after.  Place your bets. 

Bourne, Joel K., The End of Plenty: The Race to Feed A Crowded World, W. W. Norton & Company, New York, 2015.

Sunday, February 17, 2013

Easter Island II


I keep having nightmares about one possible future: biofuel hell.  Clearly, they are visions sent by ancestral spirits, and they are meant to be shared.  Perhaps they will inspire writers, movie makers, and other creative people to produce healing, mind-altering work.  Perhaps they will inspire contemplation and sincere conversations.  At this point, I’m just going to dump a bag of jigsaw puzzle pieces on the table.  See what you can do with them.

During World War II, when gasoline was rationed, or unavailable to civilians, hundreds of thousands of vehicles in dozens of nations were converted to run on wood gas.  Car owners installed equipment that weighed 400 to 500 pounds (180 to 225 kg), plus another 50 to 100 pounds (22 to 45 kg) of fuel — wood chips or charcoal. 

In the firebox, fuel was ignited to release the gasses, primarily nitrogen and carbon monoxide.  Carbon monoxide was the flammable and explosive energy source.  It was also extremely poisonous, much to the delight of morticians.  Many folks drove with their windows rolled down.  The gas contained twice as much non-flammable nitrogen as carbon monoxide, which meant that it was not a high-powered fuel. 

In wartime Germany, 500,000 wood gas vehicles were in use, including cars, buses, tractors, motorcycles, ships, and trains.  These vehicles were also used in Denmark, Sweden, France, Finland, Switzerland, Russia, Japan, Korea, and Australia.

Charcoal-powered cars were developed in China in 1931, and they remained popular into the 1950s.  Before World War II, the French were consuming 50,000 tons of wood for vehicle fuel.  This increased to 500,000 tons by 1943. 

Readers who want to get a better feel for what life was like in an era of wood-fuelled transport should read Producer Gas & the Australian Motorist by Don Bartlett.  It’s a 26 page discussion of what Australian drivers experienced during World War II, when little gasoline was available. 

Today, rising gasoline prices are renewing interest in wood-power.  Modern technology allows wood-powered cars to cruise at 68 mph (110 km/h), with a driving range of 62 miles (100 km), consuming 66 pounds (30 kg) of wood.  There’s just one little drawback with biofuels.  “If we were to convert every vehicle, or even just a significant number, to wood gas, all the trees in the world would be gone and we would die of hunger because all agricultural land would be sacrificed for energy crops.  Indeed, the woodmobile caused severe deforestation in France during the Second World War.”  France was not alone.  Remember that there were far, far fewer cars in the world 70 years ago.

Americans are fiercely defensive about their sacred guns, but this passion is trivial in comparison to our God-given right to drive energy-guzzling motorized wheelchairs.  Most of us would rather be stoned to death by an angry crowd of Taliban than switch to bikes or buses.  Have no doubt that when gas rises above $20 or $30 a gallon, or when filling stations are out of gas for days or weeks at a time, countless hucksters will fall out of the sky, selling wood gas conversion units — and every one of them will be bought.

Air travel is a dinosaur industry, and will likely be replaced by rail.  The University of Minnesota is working with the Coalition for Sustainable Rail (CSR) and the Sustainable Rail International (SRI) to create powerful, fast, clean, and modern steam locomotives.  “If the demonstration project is successful, however, trains could be merely a starting point for biocoal-fueled steam power.”

The Natural Resources Research Institute at the University of Minnesota has invented biocoal.  They feed “cellulosic biomaterial” (like dead trees) into a torrefaction process and turn it into black pellets.  The raw material is exposed to high temperatures, pulverized, and then formed into fuel pellets.  Unlike wood pellets, torrefied biomass pellets will not absorb water, so they can be stored outdoors.  The pellets have the same energy content as coal, with no sulfur or heavy metals.  

Tests in the US, Europe, and Japan have shown that torrefied biomass can successfully be used in coal-fired power plants with few modifications.  Several plants for manufacturing torrefied biomass should be in operation by 2013.  This fuel has a higher energy density than wood pellets or wood chips. 

Here’s a gem: “Biomass gasification is being considered as a possible technology for converting at least 10 million acres of Texas brush into biofuel, according to Dr. Jim Ansley, Texas AgriLife Research rangeland ecologist in Vernon.”  Vast areas of mesquite and juniper wood are just going to waste, and need to be put to productive use.

This winter, many Greeks are heating with wood, since the tax on heating oil rose 450 percent.  Slimeballs are busy illegally cutting trees in national forests.  At night, people are going into Athens parks and cutting limbs and felling trees.  High levels of smoke are sending pollution readings far beyond danger levels.  What’s odd is that this hasn’t been a cold winter.  In Athens, nighttime temperatures typically dip into the low 40s (F).  That’s warmer than where I live. 

I’ve run my heater maybe four hours all winter.  I’m a writer, and writers have no choice but to live on nothing.  Every morning I get out of bed and put on a tee-shirt, heavy sweatshirt, fleece jacket, thick hooded sweatshirt, insulated cap, blue jeans, socks and shoes, and I’m ready for a long day of work.  Writers know that our sense of coldness is culturally programmed — it’s all in your head — and has little to do with our animal bodies.  Once we understand this vital secret, we can live with far greater comfort, at far lower temperatures, at far less expense. 

So anyway, as we move beyond the bubble of cheap energy, we will certainly burn more biomass.  Will we use biomass energy to fuel our wood stove, cars, tractors, trucks, railroads, and power grid?  No doubt we’ll give it a good try.  It’s clearly an insane idea, but it’s hard for us to imagine a life without our addictions.

Anyone who has read John Perlin’s essential book, A Forest Journey, clearly understands the folly of running an industrial civilization on wood.  It’s been tried many times, and always failed, because it wiped out a resource that the civilization depended on for its survival — just like we’re doing today with fossil fuels. 

Jared Diamond is a geography professor at UCLA.  He has given many lectures on the Easter Island story.  His students always have a difficult time grasping the image of natives cutting down the last tree on the island.  “That's simply not possible — people aren’t that stupid!”  Well, unfortunately, yes we are, is Diamond's conclusion in his book, Collapse. 

Today, we’re moving in the direction toward a treeless planet — Easter Island II.  Ten years from now, somewhere in Nebraska, there may be a morbidly obese accountant who drives his wood-powered F350 4X4 monster truck two miles to work every day.  His fuel box is empty.  In his back yard is the last living tree on Earth.

OK, so those are the puzzle pieces.