Archive for the ‘food vs fuels’ Category

BBC NEWS | Science & Environment | Biomass energy ‘could be harmful’

Wednesday, April 15th, 2009

BBC NEWS | Science & Environment | Biomass energy ‘could be harmful’

An excellent article that makes some points that should be considered VERY CAREFULLY by those of us looking to use significant amounts of biomass in our projects.

If “sustainable” feedstocks are not produced sustainably (read, the bad-news aspects of many of today’s “industrial agrofuels”), then we have just defeated the purpose.

This kind of falls into the category of one of Richard Heinberg’s “5 axioms of sustainability” (if you have not read those, I suggest you do. I keep them summarized on a sheet, posted to the wall next to my computer. avaliable here: http://www.richardheinberg.com/museletter/178).

1. (Tainter’s Axiom): Any society that continues to use critical resources unsustainably will collapse.

Exception: A society can avoid collapse by finding replacement resources.

Limit to the exception: In a finite world, the number of possible replacements is also finite.

2. (Bartlett’s Axiom): Population growth and/or growth in the rates of consumption of resources cannot be sustained.

3. To be sustainable, the use of renewable resources must proceed at a rate that is less than or equal to the rate of natural replenishment.

4. To be sustainable, the use of non-renewable resources must proceed at a rate that is declining, and the rate of decline must be greater than or equal to the rate of depletion.

The rate of depletion is defined as the amount being extracted and used during a specified time interval (usually a year) as a percentage of the amount left to extract.

5. Sustainability requires that substances introduced into the environment from human activities be minimized and rendered harmless to biosphere functions.

In cases where pollution from the extraction and consumption of non-renewable resources that has proceeded at expanding rates for some time threatens the viability of ecosystems, reduction in the rates of extraction and consumption of those resources may need to occur at a rate greater than the rate of depletion.

In my mind, these are principles that should underpin the implementation of the whole next generation of sustainable energy infrastructure.

- Stephen

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Bioethanol’s Impact On Water Supply Three Times Higher Than Once Thought

Monday, April 13th, 2009

Bioethanol’s Impact On Water Supply Three Times Higher Than Once Thought - Science Daily

Very interesting. More reason to go to dramatically lower water using synthetic fuels.

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Natural World - A Farm for the Future

Tuesday, April 7th, 2009

Natural World - A Farm for the Future

This is a fascinating piece put out by the BBC on the future of farming post-peak-oil.

A must-see for all in my book.

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A rough story on the state of corn Ethanol, and a visual depiction of it’s efficiency issues.

Thursday, September 18th, 2008

It’s bad times for those in the corn ethanol business.

Hat tip to Martin Tobias for the link to the story followed from his blog (see the blogroll, bottom right).

http://www.bloomberg.com/apps/news?pid=20601109&sid=azPOyrCia8Nc&refer=exclusive

For a visual reference point on why corn ethanol is a bad idea from an energy standpoint, consider the following:

The two images below represent the land area required to produce biomass feedstock required to produce a quantity of fuels equal to 100% of the output of the ICF synfuels plant (which will achieve a dramatically lower GHG footprint and cost of production than corn ethanol).

The image on the top in yellow is if the output were achieved with corn ethanol.  The image on the bottom is if a cellulosic bioenergy crop called Miscanthus was used (this feedstock IS compatible with our process).

                       CORN

illinois-land-area-required-to-match-icf-production-with-corn-ethanol.png

            MISCANTHUS

land area required for agricultural biomass sourcing of ICF plant output with Miscanthus feedstock

Taking this much corn out of the food chain removes an amount of food adequate to meet the basic annual calorie requirements of 29,000,000 people…

We are also completely ignoring the energy balance issues here, so if one took into account the energy burned in the growing process (and therefore how much actual energy profit was available for the rest of the economy to use), corn would look very dramatically worse.

Of course, since we will use coal and waste biomass, not an agriculturally sourced feedstock, we will produce the same output, with no impact at all on land use and food production…

NRDC?  Sierra Club?  Bueller?

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Giant Grass Miscanthus Can Meet US Biofuels Goal Using Less Land Than Corn Or Switchgrass

Tuesday, August 5th, 2008

It looks like Science Daily, Cnet, Matter, and others are catching up to the efficiency of Miscanthus as a bioenergy feedstock.

http://www.sciencedaily.com/releases/2008/07/080730155344.htm

 http://news.cnet.com/8301-11128_3-10002885-54.html

http://www.matternetwork.com/2008/8/midwest-grass-further-improves-biofuel.cfm

It is by far the most efficient agricultural feedstock crop that we have found.  It is not currently competitive one either a land use or cost per MMBTU basis compared to waste biomass sources such as garbage, but is definitely one of the next-best options once those feedstocks are fully utilized.

It is one of the feedstocks we intend to use at our facility. Our work with environmental groups in Illinois indicates that there is potential to grow this crop in CRP land unsuitable for corn production, which is currently just left in grass, and burned off once a year.

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Gulf dead zone predicted to set record

Tuesday, July 22nd, 2008

http://hosted.ap.org/dynamic/stories/A/AP_LA_DEAD_ZONE_ALOL-?SITE=ALMON&SECTION=HOME&TEMPLATE=DEFAULT&CTIME=2008-07-16-08-41-02

Scientists are reporting the largest recorded gulf of Mexico dead zone in history.

Gulf Of Mexico Dead Zone

“the recent increase in corn crops is due to the nation’s increased efforts to find alternative fuel resources, such as corn-powered ethanol.”…….

Aah, the law of unintended-but-known-but-done-anyway-because-it-is-politically-convenient consequenses….

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Some biofuels may do more harm than good

Friday, May 30th, 2008

http://www.sciencedaily.com/releases/2008/05/080527130056.htm  

Some Biofuels Might Do More Harm Than Good To The Environment, Study Finds

ScienceDaily (May 29, 2008) — Biofuels based on ethanol, vegetable oil and other renewable sources are increasingly popular with government and environmentalists as a way to reduce fossil fuel dependence and limit greenhouse gas emissions.


But new research led by a biologist at the University of Washington, Bothell, shows that some of the most popular current biofuel stocks might have exactly the opposite impacts than intended. The authors of a paper published in the June issue of the journal Conservation Biology offer a dozen policy recommendations to promote sustainability and biodiversity in biofuel production.The study looked at factors such as the energy needed to produce a renewable fuel source compared with how much energy is produced, the impact on soil fertility and effects on food supply when fuels based on crops such as corn and soybeans are mixed with fossil fuels. Based on those factors, the authors determined that corn-based ethanol is the worst alternative overall.

“It’s foolish to say we should be developing a particular biofuel when that could mean that we’re just replacing one problem with another,” said lead author Martha Groom of the UW Bothell. Co-authors are Elizabeth Gray of The Nature Conservancy and Patricia Townsend of the UW Seattle.

The authors argue that precise calculations are needed to determine the ecological footprints of large-scale cultivation of various crops used for biofuels. They note, for example, that because such large amounts of energy are required to grow corn and convert it to ethanol, the net energy gain of the resulting fuel is modest. Using a crop such as switchgrass, common forage for cattle, would require much less energy to produce the fuel, and using algae would require even less. Changing direction to biofuels based on switchgrass or algae would require significant policy changes, since the technologies to produce such fuels are not fully developed.

The paper’s policy suggestions are “not definitive at all,” Groom said, “but rather each category calls out a question and is a starting point in trying to find the proper answers.”

These concerns are becoming more acute with the rapid rise of both food and fuel prices, she said. The issue is especially touchy for farmers who might for the first time be realizing significant profits on their crops, but it also is a serious concern for motorists.

“I’ve heard about people getting their gas tanks siphoned, and I hadn’t heard of that since the ’70s,” she said.

A difficulty, Groom said, is that while escalating prices add pressure to find less costly fuel sources, acting too hastily could create a host of other problems. For example, farmers who plant only corn because it is suddenly profitable, and don’t rotate with crops such as soybeans, are likely to greatly deplete their soil, which could limit crop growth and promote soil erosion.

Also, some plants are better than others for absorbing carbon dioxide from the atmosphere, while others perhaps need more cultivation, which requires more fossil fuel for farm equipment. In addition, fertilization, watering and harvesting all require energy.

The study took about a year to conduct and is a synthesis of peer-reviewed research published in a various journals. The scientists examined the literature looking for indicators of biofuels that are more sustainable and carry a smaller ecological footprint, then used that information to derive the policy recommendations.

The primary audiences for the work are policy makers, students and other biologists, Groom said. The primary goals are to establish a logical basis to evaluate options for biofuel development and to spur new research to find the most ecologically promising alternatives.

“We don’t want to make new mistakes. If we don’t ask the right questions to start with, we’re going to replace old problems with new ones,” she said.

Policy Recommendations

  • Calculate a biofuel’s ecological footprint
  • Promote only biofuels that can be produced sustainably
  • Select highly efficient species for biofuels
  • Work to minimize land needed for biofuels
  • Encourage reclamation of degraded areas
  • Prohibit clearing areas for more cultivation
  • Promote use of energy crops that require less fertilizer, pesticide and energy
  • Promote native and perennial species
  • Prohibit use of invasive species
  • Promote crop rotation on cultivated lands
  • Encourage soil conservation
  • Promote only biofuels that are at least net carbon neutral

Adapted from materials provided by University of Washington, via EurekAlert!, a service of AAAS.

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Biofuels worse than coal?

Monday, April 7th, 2008

Here is a new tune to be hearing from the environmental community:

http://gristmill.grist.org/story/2008/4/6/131149/2305 

Like it or not, on average, what they are saying is generally speaking true.  

We got another interesting look at the impact of high food prices this week, with a bit of long-simmering unrest flaring up in egypt, partially as a result of high food prices. http://www.upi.com/NewsTrack/Top_News/2008/04/07/egyptians_protest_high_prices/7265/ 

Of course, not all biofuels create catastrophic food or land use change problems, but most do when taken as a whole. Now we just have to show the world that coal does not require major disturbances to the surface, and is, indeed, capable of delivering dramatic reductions or elimination of the lifecycle GHG footprint when used for fuels production, and also demosntrate how it can be blended with biomass for advanced second generation biofuels production, producing the renewable sustainable fuels, but with a small fraction of the land-use impact.

Oil closed over $109 today.

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Even more evidence of poor environmental performance from most conventional biofuels.

Tuesday, February 12th, 2008

There have been a number of articles in recent weeks citing recent scientific studies that have proven poor lifecycle greenhouse gas footprints from conventional biofuels.  In a nutshell, up till now most greenhouse gas assessments have not taken into account the full lifecycle costs of biofuels production. much of the new incremental sources of bio-oils have been coming from parts of the world where new land is being cleared, often from tropical rainforests, peat bogs, or other dense natural carbon stores. When this land clearing occurs, dramatic carbon releases often result. The result is that many, if not most, biofuels exhibit a lifecycle greenhouse gas footprint that is actually higher than that of the petroleum fuels that they are intended to replace. This does not mean that all biofuels are bad. It just means that we need to be far more careful in the land use changes that occur where we are sourcing these bio-feedstocks, and what cropping systems are used in their cultivation (as application of nitrogen fertilizers are also a major source of greenhouse gas emissions in the biofuels lifecycle. http://www.iht.com/articles/2008/02/07/healthscience/biofuel.php?page=1

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More evidence of the rapid emergence of acute food vs fuels competition issues.

Sunday, January 6th, 2008

This is going to be a really big problem in the near future. The combination of ravenous demand for food crops from ethanol and biodiesel production, as well as major dietary changes going on in Asia and elsewhere as a big percentage of the world’s population begins to demand and be able to afford far more of crop-intensive foods such as meat as a larger percentage of thier diet, is going to cause serious consequenses for poorer food-importing nations. Most likely and serious ethical questions will begin to be raised about the use of most conventional biofuels that are derived from food crops or grown on land that would otherwise be used for food agriculture.

This will almost certainly bring dramatically raised awareness of the land-use impacts of alternative fuels production, leading to a call for biofuels, if they are to be produced on agricultural lands at all, to be produced from high-yielding low-input second-generation bioenergy crops such as miscanthus, (which we can very efficiently blend in with coal at our plant) or from high-yielding non-food crops that will be grown on nonagricultural lands, such as Jatropha. (See: our good friends at EDS Fuels www.edsfuels.com for Jatropha biofuels production. The bio-oil produced by these guys will be the savior of the US biodiesel refining industry.)

This issue will almost certinaly bring new focus to the question of the relative wisdom of using corn for ethnaol production. Interesting fact: to produce enough Ethanol from corn to fill the tank of an SUV one time, you would need to use 450 pounds of corn, which has enough calories in it to meet the basic dietary needs of one person for an entire year!

http://www.financialpost.com/story.html?id=213343

Financial Post

Friday, January 04, 2008

Forget oil, the new global crisis is food

BMO strategist Donald Coxe warns credit crunch and soaring oil prices will pale in comparison to looming catastrophe

Alia McMullen,  Financial Post  Published: Friday, January 04, 2008

Scott Olson/Getty Images

A new crisis is emerging, a global food catastrophe that will reach further and be more crippling than anything the world has ever seen. The credit crunch and the reverberations of soaring oil prices around the world will pale in comparison to what is about to transpire, Donald Coxe, global portfolio strategist at BMO Financial Group said at the Empire Club’s 14th annual investment outlook in Toronto on Thursday.

“It’s not a matter of if, but when,” he warned investors. “It’s going to hit this year hard.”

Mr. Coxe said the sharp rise in raw food prices in the past year will intensify in the next few years amid increased demand for meat and dairy products from the growing middle classes of countries such as China and India as well as heavy demand from the biofuels industry.

“The greatest challenge to the world is not US$100 oil; it’s getting enough food so that the new middle class can eat the way our middle class does, and that means we’ve got to expand food output dramatically,” he said.

The impact of tighter food supply is already evident in raw food prices, which have risen 22% in the past year.

Mr. Coxe said in an interview that this surge would begin to show in the prices of consumer foods in the next six months. Consumers already paid 6.5% more for food in the past year.

Wheat prices alone have risen 92% in the past year, and yesterday closed at US$9.45 a bushel on the Chicago Board of Trade.

At the centre of the imminent food catastrophe is corn - the main staple of the ethanol industry. The price of corn has risen about 44% over the past 15 months, closing at US$4.66 a bushel on the CBOT yesterday - its best finish since June 1996.

This not only impacts the price of food products made using grains, but also the price of meat, with feed prices for livestock also increasing.

“You’re going to have real problems in countries that are food short, because we’re already getting embargoes on food exports from countries, who were trying desperately to sell their stuff before, but now they’re embargoing exports,” he said, citing Russia and India as examples.

“Those who have food are going to have a big edge.”

With 54% of the world’s corn supply grown in America’s mid-west, the U.S. is one of those countries with an edge.

But Mr. Coxe warned U.S. corn exports were in danger of seizing up in about three years if the country continues to subsidize ethanol production. Biofuels are expected to eat up about a third of America’s grain harvest in 2007.

The amount of U.S. grain currently stored for following seasons was the lowest on record, relative to consumption, he said.

“You should be there for it fully-hedged by having access to those stocks that benefit from rising food prices.”

He said there are about two dozen stocks in the world that are going to redefine the world’s food supplies, and “those stocks will have a precious value as we move forward.”

Mr. Coxe said crop yields around the world need to increase to something close to what is achieved in the state of Illinois, which produces over 200 corn bushes an acre compared with an average 30 bushes an acre in the rest of the world.

“That will be done with more fertilizer, with genetically modified seeds, and with advanced machinery and technology,” he said.

A Chinese perspective on the matter: http://news.bbc.co.uk/2/hi/programmes/from_our_own_correspondent/7171625.stm

China’s farms struggle to meet growing demand

By Quentin Sommerville
BBC News, Henan

I stood in Zhang Meidi’s cabbage patch, kicking the dirt with my boots.

Urbanisation and the creeping desert in the north mean China is losing 25m acres of farmland a year

The first frosts would arrive soon but for now the soil was dark, crumbly and rich.Not like the hard mud around Shanghai or the dry, sandy soil of Beijing. This is China’s bread basket. Wheat has been grown here for thousands of years.

But Zhang Meidi has given up on it.

She laughed, her heavy, gold earrings catching the light.

The prices in the market were good these days, she said, but not for wheat.

Her feet are planted firmly at the bottom of China’s great towering economy, but the breadth of her vision would have put a team of Beijing economic planners to shame.

Zhang Meidi could see for miles.

She started by giving me a lesson on China’s food chain.

First, she explained, people in China now had more money so they wanted to eat better things, more meat and more fruit and vegetables.

That is why she is growing cabbages.

Her little handkerchief of land would grow enough wheat to earn about £200 ($395) but, by planting cabbages, she had almost trebled her earnings.

And, in the summer, she would grow tomatoes and earn almost £700 ($1,300).

Her husband - wrapping the cabbages against the coming chill - looked on, nodding in agreement and admiration.

All her neighbours were doing the same, she said.

Growing demand

And, sure enough, the little patchwork of plots spreading out around us was a confused jumble.

Wheat was still being grown, but increasingly it was being crowded out by cabbages and other crops too.

And that was not the only change taking place around us.

What was once farmland, outside the city of Zhengzhou, was now a suburb.

It still felt rural but now it was - well, more crowded.

There were more homes and roads. Further along the road, there were even fish farms and a huge highway.

Sure, plenty of Chinese are leaving their farms for the city but this was different.

Zhang Meidi and her neighbours were being swallowed up by the city. Urbanisation and the creeping desert in the north mean that China is losing 25 million acres (10m hectares) of farmland a year.

And just as the amount of land is shrinking, the demand for food is getting greater.

When she was younger, Zhang Meidi explained, her family would only have meat on special occasions.

Pork would be served when guests arrived or during China’s big national holidays. Now it was on their dinner table two or three times a week.

Move to the cities

And another reason why she is selling so much at the market these days is because of that growing urban population.

Over the next 12 years, an estimated 320 million people will move to cities.

There just is not enough to go around, so prices are rising - and will keep going up - until farmers plant more

As one analyst put it, a country larger than the United States will be created by new urban Chinese by 2020.

And when they come to the cities, these new arrivals - almost instantly - start eating more protein.

Now that they no longer grown their own food, and with more wages in their pocket, their diet changes.

So Chinese people are eating less wheat and fewer grains in general because they are upgrading to meats, especially pork.

But that pork comes from hungry pigs who consume a lot more grain.

Of course, yields are getting better, so the same patch of land is growing more corn (maize), rice and soya bean than it once did.

But there is another problem - in China, farms are still just patches of land.

Farmers do not own the land they work - and they cannot sell it - so larger, more efficient farms have not been created.

Acutely aware of the political consequences of landless farmers, rural land reform seems to be one step too far for the leaders in Beijing.

Already, the country that discovered the soya bean has to import most of its needs.

And other crops will follow.

The days of food self-sufficiency in China are numbered.

Rising prices

So, like the rest of us, China will turn to Australia, Africa and South America to fill its belly.

It is small wonder that food prices are climbing everywhere, not just here in China.

There just is not enough of it to go around, so prices are rising - and will keep going up - until farmers plant more.

These changes mean that the coming years will be years of plenty for Zhang Meidi, but she has had it with being a peasant farmer.

She has two sons. One is in university and the other will go there soon.

They will live off their learning, she told me, rather than their labour.

Education is something she did not have but for them it will be different, she said.

Their connection with the land will be broken, they will move to the city and to a wealthier life - a life with more meat, more fruit and more vegetables.

The transformation in China is not just taking place in the factories of Guangdong or the streets of Shanghai.

Changes are taking place here in the very bones of the people and in every last atom of Chinese soil.

From Our Own Correspondent was broadcast on Saturday, 5 January, 2008 at 1130 GMT on BBC Radio 4. Please check the programme schedules for World Service transmission times.

Published: 2008/01/05 12:35:53 GMT

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