Showing posts with label bio char. Show all posts
Showing posts with label bio char. Show all posts

Thursday, July 30, 2009

Fiona Kobusingye's Africa

It is about time that someone pointed out the obvious. It is outrageous to suggest that modern methods not be used to produce the wealth for others that it has produced for us. That modern methods are not perfect is irrelevant. They were replacing methods that were even less perfect. I tend to actually get angry about such profoundly ignorant assertions.

The magic of modern methods is that they begin an optimization process that step by step eliminates new problems as they arise.

The present emphasis on CO2 production is well met because it forces us to create far better energy regimes. That was simply overdue and required a blanket decision by governments to do it.

Subsistence farming, which only exists because the farmers do not have access to credit on reasonable terms, is the worst producer of CO2 imaginable. Slash and burn is just that.

The reason that I have been pushing subsistence biochar using maize culture in emulation of the Amazonians is to end the folly of slash and burn. My initial posts on this now go back two years and the general methodology has made great strides into agricultural consciousness. However, we still do not have the picture show made on the earthen corn kiln method that could be used to get the information to everyone out there. Good progress is been made in applying biochar with zao holes by hugely reducing the need for biochar. Hills are better still in well watered climates.

Africa’s real climate crisis

Life in Africa is often nasty, impoverished and short. AIDS kills 2.2 million Africans every year according to WHO (World Health Organization) reports. Lung infections cause 1.4 million deaths, malaria 1 million more, intestinal diseases 700,000. Diseases that could be prevented with simple vaccines kill an additional 600,000 annually, while war, malnutrition and life in filthy slums send countless more parents and children to early graves.

And yet, day after day, Africans are told the biggest threat we face is – global warming.

Conferences, news stories, television programs, class lectures and one-sided “dialogues” repeat the claim endlessly. We’re told using oil and petrol, even burning wood and charcoal, will dangerously overheat our planet, melt ice caps, flood coastal cities, and cause storms, droughts, disease and extinctions.

Over 700 climate scientists and 31,000 other scientists say humans and carbon dioxide have minimal effects on Earth’s temperature and climate, and there is no global warming crisis. But their views and studies are never invited or even tolerated in these “climate crisis” forums, especially at “ministerial dialogues” staged with United Nations money. Al Gore refuses to debate any of these experts, or even permit questions that he hasn’t approved ahead of time.

Instead, Africans are told climate change “threatens humanity more than HIV/AIDS.” More than 2.2 million dead Africans every year?

We are warned that it would be “nearly impossible to adapt to the loss of the West Antarctic ice sheet,” which would raise sea levels by “5 to 15 meters.” That certainly would impact our coastal communities. But how likely is it?

The average annual temperature in Antarctica is minus 50 degrees F! Summer in its Western Peninsula barely lasts two months and gets maybe 10 degrees above freezing for just a few hours a day. Not even Mr. Gore or UN computer models talk about raising Antarctic temperatures by 85 degrees F year-round. So how is that ice supposed to melt?
Let’s not forget that sea levels have risen 120 meters since the last Ice Age ended. Do the global warming alarmists think cave men fires caused that? Obviously, powerful natural forces caused those ancient glaciers to come and go – and caused the droughts, floods and climate changes that have affected Africa, the Earth and its animals and people for millions of years.

Just consider northern Africa, where green river valleys, hippopotami and happy villages suddenly got turned into the Sahara Desert 4,000 years ago. Scientists don’t know why, but it probably wasn’t Egyptian pharaohs building pyramids and driving chariots.

However, the real problem isn’t questionable or fake science, hysterical claims and worthless computer models that predict global warming disasters. It’s that they’re being used to justify telling Africans that we shouldn’t build coal or natural gas electrical power plants. It’s the almost total absence of electricity keeping us from creating jobs and becoming modern societies. It’s that these policies KILL.

The average African life span is lower than it was in the United States and Europe 100 years ago. But Africans are being told we shouldn’t develop, or have electricity or cars because, now that those countries are rich beyond anything Africans can imagine, they’re worried about global warming.

Al Gore and UN climate boss Yvo de Boer tell us the world needs to go on an energy diet. Well, I have news for them. Africans are already on an energy diet. We’re starving!

Al Gore uses more electricity in a week than 28 million Ugandans together use in a year. And those anti-electricity policies are keeping us impoverished.

Not having electricity means millions of Africans don’t have refrigerators to preserve food and medicine. Outside of wealthy parts of our big cities, people don’t have lights, computers, modern hospitals and schools, air conditioning – or offices, factories and shops to make things and create good jobs.

Not having electricity also means disease and death. It means millions die from lung infections, because they have to cook and heat with open fires; from intestinal diseases caused by spoiled food and unsafe drinking water; from malaria, TB, cholera, measles and other diseases that we could prevent or treat if we had proper medical facilities.

Hypothetical global warming a hundred years from now is worse than this?

Telling Africans they can’t have electricity and economic development – except what can be produced with some wind turbines or little solar panels – is immoral. It is a crime against humanity.

Meanwhile, China and India are building new coal-fired power plants every week, so that they can lift their people out of poverty. So even if Africa remains impoverished – and the US and Europe switched to windmills and nuclear power – global carbon dioxide levels would continue increasing for decades.

Even worse, the global warming crusaders don’t stop at telling us we can’t have electricity. They also campaign against biotechnology. As American, Brazilian and South African farmers will tell you, biotech seeds increase crop yields, reduce pesticide use, feed more people and help farmers earn more money. New varieties are being developed that can resist droughts – the kind Africa has always experienced, and the ones some claim will increase due to global warming.

Environmental radicals even oppose insecticides and the powerful spatial insect repellant DDT, which Uganda’s Health Ministry is using along with bed nets and modern ACT drugs to eliminate malaria. They claim global warming will make malaria worse. That’s ridiculous, because the disease was once found all over Europe, the United States and even Siberia.

Uganda and Africa need to stop worrying about what the West, the UN and Al Gore say. We need to focus on our own needs, resources and opportunities.

We don’t need more aid – especially the kind that goes mostly to corrupt officials who put the money in private bank accounts, hold global warming propaganda conferences and keep their own people poor. We don’t need rich countries promising climate change assistance (maybe, sometime, ten years from now), if we promise not to develop.

We need to stop acting like ignorant savages, who thought solar eclipses meant the gods were angry with them, and asked witch doctors to bring the sun back. We need to stop listening to global warming witch doctors, who get rich telling us to keep living “indigenous,” impoverished lives.

Friday, April 25, 2008

Kelpie Wilson on Global Food Shock

The press is full of reaction to the suddenly emerging food repricing going on. There is a wide range of opinion, but no real panic or even response from the political crowd yet. I found this by Kelpie to be a good stab at getting the broad picture and she weighs in with a spot for the coming biochar agricultural revolution.

Policy makers need to move toward complete liberalization of the globalization of the agricultural industry, since it must be free to reallocate resources as fast as Mother Nature wishes to throw curveballs. The thin justification for protectionism in agriculture will evaporate now that the reality of a global population transitioning into a middle class lifestyle begins to really take hold.

This current uproar is really the first shot in a global shakeup of food production that has actually been long overdue. It will be sustained for the years needed to implement the trade and technology solutions. The end result is inevitable of course, but so is the shouting and screaming.

Recall the unending battles that ensued in Europe integrating their agricultural policy between the first six members. When the mutual benefits became totally clear, the rest of the countries yelled ‘yes sir’ and jumped aboard. It just took sixty years and there is still plenty to be done, but no one is held up much by agricultural lobbies anymore.

It is outrageous to me that we control the sugar business through quotas when we do not grow much our selves. This is just another Royal monopoly designed to gouge the American people while suppressing the cost of production offshore at the direct expense of the subsistence farmer. Seventeenth Mercantilism is very much alive and well and it still does not work except to distort the market for the direct benefit of those with the Royal writ.

The restructuring of global agriculture will create a sustained attack on these hindrances to global agricultural efficiency and wealth creation.

Why more food is not the answer

by Kelpie Wilson

With food riots across the globe in the news, the immediate cause of food shortages is simply this: grain prices have doubled over the last year and poor people can no longer afford to buy enough food. There is no one single cause for the price rise; it is a combination of supply and demand.

Steady population growth means there are about 70 million new mouths to feed every year, and increasing affluence is also spurring more people to buy more meat. Meat is grain-intensive - it takes about seven pounds of grain to produce one pound of beef. Biofuels are another new demand on grain stocks, and a potentially insatiable one. The grain used to fill an SUV tank with ethanol could feed one person for a year.

There is more than enough grain to feed every hungry human on the planet, but the poor cannot compete with wealthier buyers of meat and biofuels. Markets are not interested in feeding hungry people - they want to make money, so from a capitalist point of view, the only solution is to increase supply in the hope that it will drive prices down.

However, on the supply side, serious limiting factors are coming into play: dwindling water supplies and increased drought exacerbated by climate change; increasingly degraded land and soils; the rising cost of energy used for everything from water pumping to transport, and the growing cost of fertilizer and other inputs.

The world wants more food - a lot more food - but the planet will not be able to provide it. For this reason alone, more food is not the answer - it cannot be the answer.

Lester Brown, president of the Earth Policy Institute and author of the book "Plan B 3.0: Mobilizing to Save Civilization," says that while there have been food price spikes in the past, "This troubling situation is unlike any the world has faced before." Brown doesn't use the term, but it is likely that we have reached "peak food," the moment when world grain output has achieved its maximum and we will have to work very hard to keep it from declining.

One of the top reasons to believe we have reached peak food is that we have apparently reached peak oil. In his book, "Eating Fossil Fuels," Dale Allen Pfeiffer shows how utterly dependent modern agriculture is on fossil fuels, not just for the machinery that plants and harvests, but for the energy to irrigate fields, and for fertilizers. About 30 percent of farm energy goes to fertilizer, much of which is made from natural gas. Like oil, natural gas is becoming increasingly expensive as production nears peak. Without oil, we might not drive cars, but without fertilizer, we might not eat.

Food and fuel are intimately connected. Not only is fuel essential to produce food, but because food can substitute for fuel, the price of food is now locked into the price of oil - a price that is going nowhere but up.

A Timely Report Shows the Way Forward

Globalization has promised to lift every person out of poverty by growing the economy so large that wealth will eventually trickle down to all. But this is a false promise that ignores physical limits to planetary resources.

A groundbreaking United Nations report that presents a serious challenge to the promises of globalization and biotech was released last week at a very timely moment. The IAASTD (International Assessment of Agricultural Science and Technology for Development) is directed by Robert Watson, a former director of the IPCC (Intergovernmental Panel on Climate Change), and it shares some similar features to the UN Climate assessment reports.

Most importantly, the IAASTD report says that agricultural systems cannot go on as they have. They are failing to feed the poor, wrecking ecosystems, exacerbating global warming and are far too dependent on fossil fuels. Just as everything about the way we produce and use energy must change in order to avoid climate catastrophe, so everything about the way we produce and use food must change in order to avoid a humanitarian and ecological disaster.

Watson said, "If we do persist with business as usual, the world's people cannot be fed over the next half-century. It will mean more environmental degradation, and the gap between the haves and have-nots will further widen. We have an opportunity now to marshal our intellectual resources to avoid that sort of future. Otherwise, we face a world no one would want to inhabit."

As with climate change, the solution to the food crisis will not be found in some miracle new technology. On the contrary, the report identifies a need to reconsider many traditional crops and methods for maintaining soil fertility and coping with drought. These traditional technologies need to be integrated with modern ones to achieve the best of both worlds. Currently there is little support for this approach to crop science.

British economist Nicholas Stern called climate change the biggest market failure in history. The IAASTD report also indicts markets with failing to eradicate hunger and poverty. Watson said, "The incentives for science to address the issues that matter to the poor are weak ... the poorest developing countries are net losers under most trade liberalization scenarios."

Agribusiness Reacts

The IAASTD study involved more than 400 authors and took four years to produce. However, not everyone stuck with the process till the end. Representatives from the biotechnology industry walked out in protest, complaining that GM (genetically modified) crops were being unfairly overlooked in favor of organic agriculture. The New Scientist (5 April 2008) presented a point counterpoint between participants Deborah Keith, a manager for Syngenta, one of the world's largest biotech companies, and Janice Jiggins, a social scientist. Keith complained that the draft document was unscientific and that "too often it treated fears and prejudices against technology and business as fact ..." Organic agriculture was not subjected to the same scrutiny, she said.

Jiggins' account of the process noted that traditional farmers at the table "took deep offense at hearing technologies ... building on centuries-old traditions dismissed as 'anecdotal' and of no value."

At heart, the debate is over what is considered "scientific" agriculture. The discussion of biotechnology in the final report summary peels the "anecdotal" label off traditional agriculture and slaps it back on genetic engineering, saying that "assessment of modern biotechnology is lagging behind development; information can be anecdotal and contradictory ..."

Jiggens notes that, among other problems, "the capacity to monitor and regulate GM has failed to keep up."

In reaction to the IAASTD report, some commentators have leaped on the idea that people who are "afraid of science" are irrationally keeping biotech and companies like Monsanto from saving the world.
Oxford professor Paul Collier, writing in The London Times, said that Europe and Japan are "befuddled by romanticism" for subsidizing inefficient small farms. "The remedy to high food prices is to increase supply," he said, and the only solution to the food crisis is more food produced by "unromantic industrialized agriculture."

He also said, "The most realistic way is to replicate the Brazilian model of large, technologically sophisticated agro-companies that supply the world market. There are still many areas of the world - including large swaths of Africa - that have good land that could be used far more productively if it were properly managed by large companies. To contain the rise in food prices, we need more globalization, not less."

Brazil - Big Ag Set Up to Fail?

Taking a closer look at the Brazilian model shows why the IAASTD authors overwhelmingly rejected the big business model as a way to sustainably feed the world.

Brazil's Mato Grosso region is the world's most active agricultural frontier. Satellite photos show the relentless push of soybean monocultures and cattle grazing into the Amazon rainforest. Forest ecologist Daniel Nepstad of the Woods Hole Research Center, says that soy agriculture in the Mato Grosso has "greased the skids" for deforestation of the Amazon.

The success of soy farming in Mato Grosso is based on two advantages: the region's abundant rainfall and the discovery that heavy applications of fertilizer, especially lime and phosphorus, could impart impressive fertility to the tropical soils. Both of these assets are likely to be short-lived.

First and foremost is the rain. Nepstad's research focus is drought in the Amazon. He has found that after only two years of drought, trees begin to die and the forest fires start. Once a regular fire regime takes hold, a tipping point is reached that rapidly converts rainforest to dry scrub. The consequence is not just losing the rainforest, but losing the rain. Through a process called transpiration, trees in the Amazon seed the clouds that water the fields and pastures of South America and the Caribbean. Researchers are finding that clouds and air currents that originate in the Amazon can drive weather patterns as far away as the North Atlantic. As the forest evaporates, so does the rainfall.

The second factor, a reliance on heavy applications of fertilizer, is also bound to be a temporary phenomenon. Little noted in the popular press, fertilizer prices have skyrocketed in recent months. Reuters reported on April 16 that Chinese fertilizer importers have "agreed to pay more than triple what they did a year ago to reserve tight supplies of potash, sending the shares of global fertilizer makers to record levels."

Phosphorus, like potash, is mostly produced by mining mineral deposits and there is a limit to global reserves - a limit that we are rapidly approaching. Patrick Dery and Bart Anderson looked at phosphorus production data in a report for Energy Bulletin titled "
Peak Phosphorus." They concluded that the world has passed the peak of phosphorus production and is already in decline.

"In some ways," say Dery and Anderson, "the problem of peak phosphorus is more difficult than peak oil. Energy sources other than oil are available..." But, they point out, "Unlike fossil fuels, phosphorus can be recycled. However if we waste phosphorus, we cannot replace it [with] any other source."

The main way to recycle phosphorus is to reclaim it from sewage and animal waste. The need to do this will bring us full circle from modern high-tech agriculture back to traditional practices that used animal manure and human "night soil." Researchers in Sweden and Australia are already working on a new toilet design that would siphon off human urine to use as a source of phosphate. It would be stored in tanks for supply to farmers. What will happen to the farms of Mato Grosso when the price of phosphorus doubles, quadruples, and then doubles again? For that matter, what will happen to the fields of Iowa?
Brazil and the New Agriculture

It is the specter of resource limits that has led the authors of the IAASTD study to recommend that traditional practices be studied and adopted where they make sense. One of the most promising traditional practices that is now being studied at Cornell and other major agricultural research institutions has its origins in Brazil.

Brazil's President Luiz Inacio Lula da Silva has been on the defensive for his government's role in deforesting the Amazon. Most recently, critics have attacked Brazilian agriculture for diverting capacity from food to biofuels. Lula has countered the criticism by insisting that Brazil will expand its agriculture without further encroachments on the Amazon. One of the best ways to do that, and conserve scarce fertilizers like phosphorus at the same time, might be to adopt a practice used by an ancient civilization that occupied the Amazon before Columbus.

The practice is called terra preta, Portuguese for "dark earth." These dark earths are highly fertile soils that were created by burying charcoal along with manure and other organic wastes. Charcoal is a porous material that is very good at holding nutrients like nitrogen and phosphorus and making them available to plant roots. It also aerates soil and helps it to retain water.

Some terra preta fields are thousands of years old, and yet they are still so fertile that they are dug up and sold as potting soil in Brazilian markets.

Because making charcoal from biomass releases energy, researchers today are looking at integrated biomass energy and food production systems using "biochar" - the modern term for terra preta. For more details on these efforts, see my report for Truthout on the
first biochar conference in 2007. There is also a good account of the terra preta in Charles C. Mann's book, "1491: New Revelations of the Americas Before Columbus."

Biochar may be the answer that Lula is looking for. Biochar could be a great gift from Brazil to the rest of the world. Charles C. Mann notes that "it might improve the expanses of bad soil that cripple agriculture in Africa - a final gift from the peoples who brought us tomatoes, maize, manioc, and a thousand different ways of being human."

Biochar is just one of the traditional agricultural practices that a world running out of fossil fuels and cheap fertilizer may be very grateful to rediscover in the coming years. The IAASTD report, if acted upon quickly, could jumpstart this research.

Roadmap Needed

The IAASTD report does not go so far as to provide a road map or an action plan, but the various private-public partnerships that are working to implement its goals are already finding it useful.

Inter Press Service reports that a delegate from Costa Rica said "These documents are like a bible with which to negotiate with various institutions in my country and transform agriculture." Benny Haerlin, the representative from Greenpeace, sees the document as a blazing signpost, lighting the way. He said: "This marks the beginning of a new, of a real Green Revolution. The modern way of farming is biodiverse and labor intensive and works with nature, not against it.

Monday, November 5, 2007

Fast pyrolysis and Wood Chips

I attached a link here to a critical review paper on the pyrolysis of wood and other biomass that was published last year in Energy and Fuels(2006, 20, 848 - 889). As I have recently posted, our two options for the production of transportation fuel that can use our current engine technology without a massive overhaul is algae derived biodiesel and wood chip derived oils using heat and or pressure.

Algae, though largely undeveloped offers the promise of a very labor efficient oil and cattle fodder production system operated even on otherwise non agricultural lands. It really lends itself to automatic pumping systems, filter presses and the like with potentially very high yields.

Wood chip processing will produce oil and char through the process of heating. The article gives us an approximate 25% yield for a slow pyrolysis with a 24% char yield as well. Fast pyrolysis promises to give us nearly 75% yield with a 13% char content. Obviously, fast pyrolysis needs to be perfected. Without question pyrolysis will produce a liquid component that I am loathe to call oil as yet but can obviously be processed into a working fuel.

The difficulty of course, is that wood chip production is never going to be particularly labor efficient. We have discussed the need to properly manage woodlands throughout this blog. If woodlands can now produce an economically viable crop in the form of wood chips, we go a long way toward the restoration of the productivity of these woodlands.

The optimal annual yield of an acre of temperate woodland will still be around one ton per year per acre of woodland. The value to the owner operator of this ton of wood chips will need to cover its cost of recovery and removal. With fast pyrolysis we are suddenly looking at around five barrels of oil equivalent production per year per acre. This may actually be financially viable for the owner a participate in with oil in the $100 plus range.

Other occasional agricultural bio waste can also be fed into the system, although the direct value of most of these feed stocks as local bio char will surely dominate.

Again, we face a very significant haulage cost component. A 1000 ton per day processor needs to draw from 365,000 acres of woodland. This quickly looks like 500 net square miles or in country with a minimal woodland component, a draw radius of thirty miles at least. That is a lot of haulage.

And that 1000 ton per day facility will produce perhaps 5000 barrels of oil equivalent and some charcoal. By oil industry standards this is significant but still fairly modest.

The principal benefit of a wood chip conversion system is that it can be easily tweaked to drive good woodland management practices, which has been sorely missing to date. It may even end up been completely self sustaining.

The benefit for the owner operator is that his woodlot is economically self sustaining while he is growing a profit in the form of sawn wood and any fruit production.

The technology will also be easily implemented in the tropics were the wood waste content per acre is several times what can be achieved in the temperate zone. Of course, moisture content will be difficult to manage.




Friday, July 6, 2007

Discussion on Terra Preta (pollution impact)


Robert:
I hope we can agree that this is a method of producing charcoal that is more apt to be harmful that helpful for climate change reasons - and therefore should not be encouraged. The ancient Indians who might have produced char in this clever way didn't have the knowledge of how bad the CO, CH4, H2 and other gases are. We should.
Ron AND


Bob (cc terra preta list):
Last night, you responded to my expression of concern about too-serious emissions from in-field carbonization of corn stalks, saying (with responses interspersed):

> Hi Ron
>
> I do not actually agree with that. In ideal controlled
> circumstances which I demonstrated earlier in my blog,
> it is possible to get a completely reduced waste gas
> that is primarily CO2. In the meantime we get a
> maximal yield of either charcoal or lower temperature
> carbonized material.
>

[RWL: Thanks for reminding of your blog (shown below - nice work!). I think you are referring perhaps to a Canadian incinerator two-chamber system you wrote about - the first chamber being for pyrolysis. I like that. My concern is that the "ideal controlled circumstances" you refer to are going to be very difficult to achieve in the field. I don't understand your "meantime" - but guess you believe that the emissions that I feel are almost inevitable in the field (without some controls) are justified by the produced charcoal. I still think that could have been case 1000's of years ago - but not now.

> The method just described will be fairly less
> efficient since temperature cannot be controlled and
> the combustion gases cannot be superburned. This
> produces a lot of carbon monoxide instead.
RWL: Yup - and CH4 etc. - all polluting.
>
> However, a subsistance farmer does not have the type
> of tools we take for granted. And this
> new(ancient)method will produce a yield likely close
> to sixty to seventy percent of the best case.
>

RWL: Granted - but still something to avoid. My first recommendation is that the corn stover (or whatever) is worth bringing to a central location where the CO, CH4, etc can be combusted to serve a practical purpose - cooking being one such - but maybe electrical production, etc.

> And that product, however obtained will sequester
> carbon for decades, if not centuries.

RWL: Agreed - maybe millenia. But I feel we on this list must do all we can to avoid char production that is polluting. I am certain that there will be no carbon credit funds sent when the production is done badly.

>
> The alternative today in most of the world is to burn
> the waste outright and in the tropics to abandon the
> field for years.
>

RWL: There are other alternatives. A great project for many of us is/will be to figure out best charcoaling approaches that are non-polluting, and justify the extra efforts of doing other than "to burn the waste outright and in the tropics to abandon the field for years". Thanks for carrying this idea further on your blog. Sorry to not being in support of any form of in-field charcoaling which is polluting. The work of AD Karve is not in that category - but I still hope we can find ways to productively use those valuable pyrolysis gases.
Ron

I certainly am sympathetic to the desire to minimize the out gassing of combustion products into the environment. The best use of a closed combustion oven with a second high temperature (2000 degrees)chamber to swiftly oxidize the initial combustion gases (at 350 to 600 degrees)is the one way we can do this. This will also end up been the final resolution unless we can figure out how use fusion power to do this.

The challenge is to covert tons of stover into bio char with the least amount of immediate consumption of the stover producing the needed heat.

Burning all of it as a low quality fuel simply releases all the carbon back into the atmosphere.

What those ancient Indians have gifted us with is a well proven protocol for soil enhancement and fertility retention that just happens to sequester hundreds of pounds of carbon per acre every year in perpetuity.