A practical answer to America's farming, energy and environmental
On June 12,1989, President Bush addressed his campaign promises to deal
with the pollution problems long facing the United States.
He unveiled an ambitious plan to remove smog from California and the
nation's most populous cities, as well as efforts to reduce acid rain
pollution. Bush recommended auto makers be required to make
methanol-powered cars for use in nine urban areas plagued by air
pollution. Methanol is the simplest form of primary alcohol and is
commonly called wood alcohol.
Bush called methanol "home-grown energy for America." He further
proposed a 10 million ton reduction in sulfur dioxide emissions from
coal-burning power plants; that's a 50% reduction over present
standards. Sulfur dioxide is a major cause of acid rain, which kills
50,000 Americans and 5,000-10,000 Canadians yearly. (Brookhaven National
William Reilly, chief of the Environmental Protection Agency, at a
briefing before Bush's speech, estimated the cost of the plan would be
between $14 billion and $19 billion a year after its full implementation
at the turn of the century. Bush said, "Too many Americans continue to
breathe dirty air, and political paralysis has plagued further progress
against air pollution. We've seen enough of this stalemate. It's time to
clear the air." Political paralysis seems to be a dominant trait in
Washington in any given decade, but what did he mean by "stalemate'?
The root of this "stalemate" can be found in the concept of world energy
resources. The industrial world currently runs on fossil fuel: natural
gas, oil, and coal. Fossil fuel resources are non-renewable, being the
end product of eons of natural decomposition of Earth's ancient biomass.
Fossil fuels contain sulfur, which is the source of many of the
aggravating environmental pollution problems threatening America.
Removing sulfur compounds from fossil fuels is a major expense to the
energy producers. Also, burning fossil fuels releases "ancient" carbon
dioxide, produced by primeval plant life eons ago, into the atmosphere
causing the air we breathe to be over-burdened with CO2 increasing the
danger of global warming and the greenhouse effect.
In the late 1800s, the fledgling petroleum industry aggressively
competed with the established biomass-based energy industry in a effort
to gain control of world energy production and distribution. Fossil fuel
producers succeeded in their campaign to dominate energy production by
making fuels and chemical feedstocks at lower prices than could be
produced from biomass conversion. Now the pendulum is swinging against
It is likely that peak oil and gas production in the coterminous United
States has been reached. The bulk total production of roughly 80% will
be reached by the year 2000. Peak world production will occur about the
The situation for recoverable coal, world wide, is more favorable. Peak
production is estimated to happen shortly after the 2100. However,
increasing numbers of Americans are unwilling to accept the escalating
costs of environmental pollution and destruction associated with
coal-fired power plant smokestack emissions and the land destruction
resulting from coal mining.
If the pollution problems inherent with fossil fuel use are solved, the
dollars and cents cost of this form of energy will continue to rise due
to the dwindling availability of this non-renewable world resource. On
the other hand, the dollar cost of energy production from biomass
conversion will remain relatively constant because the world biomass
resource is renewable on a yearly basis.
The point where the cost of producing energy from fossil fuels exceeds
the cost of biomass fuels has been reached. With a few exceptions,
energy from fossil fuels will cost the American taxpayer more money than
the same amount of energy supplied through biomass conversion.
Biomass is the term used to describe all biologically produced matter.
World production of biomass is estimated at 146 billion metric tons a
year, mostly wild plant growth. Some farm crops and trees can produce up
to 20 metric tons per acre of biomass a year. Types of algae and grasses
may produce 50 metric tons per year.
Dried biomass has a heating value of 5000-8000 Btu/lb, with virtually no
ash or sulfur produced during combustion. About 6% of contiguous United
States land area put into cultivation for biomass could supply all
current demands for oil and gas. And this production would not add any
net carbon dioxide to the atmosphere. (Environmental Chemistry, Stanley
E. Manahan, Willard Grant Press, 1984)
For its Mission Analysis study conducted for the U.S. Department of
Energy in 1979, Stanford Research Institute (SRI) chose five types of
biomass materials to investigate for energy conversion: woody plants,
herbaceous plants (those that do not produce persistent woody material),
aquatic plants, and manure. Herbaceous plants were divided into two
categories: those with low moisture content and those with high moisture
Biomass conversion may be conducted on two broad pathways: chemical
decomposition and biological digestion.
Thermochemical decomposition can be utilized for energy conversion of
all five categories of biomass materials, but low moisture herbaceous
(small grain field residues) and woody (wood industry wastes, and
standing vegetation not suitable for lumber) are the most suitable.
Biological processes are essentially microbic digestion and
fermentation. High moisture herbaceous plants (vegetables, sugar cane,
sugar beet, corn, sorghum, cotton), marine crops and manure are most
suitable for biological digestion.
Anaerobic digestion produces high and intermediate Btu gasses. High Btu
gas is methane. Intermediate-Btu is methane mixed with carbon monoxide
and carbon dioxide. Methane can be efficiently converted into methanol.
Fermentation produces ethyl and other alcohols, but this process is too
costly in terms of cultivated land use and too inefficient in terms of
alcohol production to feasibly supply enough fuel alcohol to power
Pyrolysis is the thermochemical process that converts organic materials
into usable fuels with high fuel-to-feed ratios, making it the most
efficient process for biomass conversion, and the method most capable of
competing and eventually replacing non-renewable fossil fuel resources.
The foundation on which this will be achieved is the emerging concept of
"energy farming," wherein farmers grow and harvest crops that are
converted into fuels.
Pyrolysis is the technique of applying high heat to organic matter
(lignocellulosic materials) in the absence of air or in reduced air. The
process can produce charcoal, condensable organic liquids (pyrolytic
fuel oil), non-condensable gasses, acetic acid, acetone, and methanol.
The process can be adjusted to favor charcoal, pyrolytic oil, gas, or
methanol production with a 95.556 fuel-to-feed efficiency.
Chemical decomposition through pyrolysis is the same technology used to
refine crude fossil fuel oil and coal. Biomass conversion by pyrolysis
has many environmental and economic advantages over fossil fuels, but
coal and oil production dominates because costs are kept lower by
various means including government protection.
Pyrolysis has been used since the dawn of civilization. If some means is
applied to collect the off-gasses (smoke), the process is called wood
distillation. The ancient Egyptians practiced wood distillation by
collecting tars and pyroligneous acid for use in their embalming
Pyrolysis of wood to produce charcoal was a major industry in the 1800s,
supplying the fuel for the industrial revolution, until it was replaced
In the late 19th Century and early 20th Century wood distillation was
still profitable for producing soluble tar, pitch, creosote oil,
chemicals, and non-condensable gasses often used to heat boilers at the
The wood distillation industry declined in the 1930s due to the advent
of the petrochemical industry and its lower priced products. However,
pyrolysis of wood to produce charcoal for the charcoal briquette market
and activated carbon for purification systems is still practiced in the
The wood distillation industry used pyrolytic reactors in a process
called destructive distillation. The operation was carried out in a
fractionating column (a tall still) under high heat (from 1000-1700°F).
Charcoal was the main fuel product and methanol production was about 1%
to 2% of volume or 6 gallons per ton. This traditional method was
replaced by the synthetic process developed in 1927.
The synthetic process utilizes a pyrolytic reactor operating as a
gasifier by injecting air or pure oxygen into the reactor core to
completely burn the biomass to ash. The energy contained in the biomass
is released in the gasses formed. After purification the syngas,
hydrogen and carbon monoxide in a 2 to 1 ratio, is altered by catalysts
under high pressure and heat, to form methanol. This method will produce
100 gallons of methanol per ton of feed material.
Methanol-powered automobiles and reduced emissions from coal-fired power
plants can become a reality by using biomass derived fuels. The
foundation upon which this will be achieved is the emerging concept of
energy farming, wherein farmers grow and harvest crops that are
converted into fuels. Energy farming can save American family farms and
turn the American heartland into a prosperous source of clean renewable
Pyrolysis is the most efficient process for biomass conversion into fuels
that can replace all fossil fuel products. . . When farmers can grow
hemp for biomass they will make a profit energy farming.
Universities, government agencies, and private firms have conducted
studies looking into the feasibility of growing biomass at low cost to
make fuels at affordable prices, but the most promising plant species
was never considered because it is prohibited. Instead emphasis has
centered around utilizing waste products: agricultural residues after
harvest, forestry wastes from the timber and pulp wood industry, and
municipal wastes. All of these combined cannot produce enough fuel to
satisfy the needs of industry or the American consumer's automobile. Yet
biomass conversion to fuel has been proven economically feasible in
laboratory tests and by continuous operation of pilot plants in field
tests since 1973.
Farmers should be encouraged to grow energy crops capable of producing
10 tons per acre in 90-120 days. The crop has to be naturally high in
cellulose. It must grow in all climactic zones in America. And it should
not compete with food production for the most fertile land. It could be
grown in rotation with food crops or on marginal land where other crop
production isn't profitable.
At congressional hearings on alternative fuels held in 1978, Dr. George
T. Tsao, professor of chemical engineering and food and agricultural
engineering, director of laboratory of renewable resources, Purdue
University, said $30 per ton for biomass delivered to the fuel
conversion plant is an adequate base price for the energy farmer. The
price of $30/ton has also been suggested by other researchers.
Both Dr. Serge Gratch, director chemical sciences laboratory, Ford Motor
Co. and Dr. Joseph M. Colucci, director fuels and lubricants General
Motors Research Laboratories testified their companies were willing,
especially Ford, to make cars that would run on methanol fuel. The
scientists said it would take several years to tool up factories to make
methanol powered autos. They said industry could solve the problems
associated with methanol as fuel. And it would take about the same
amount of time for the energy industry to build methanol production
So why don't we have methanol at the filling station? The scientists
said the problem was government certification under the Clean Air Act
required automobile manufacturers meet standards set by the EPA based on
fuels available on a national level. Since methanol fuel standards had
not been set, the car makers couldn't make the new fleet until the
methanol fuel was available at the pump. This catch-22 situation
continues today. Government is unwilling to subsidize pilot energy farms
and biomass refinery construction because fossil fuel producers control
the energy industry.
Hemp is the only biomass resource capable of making America energy
independent. The government suspended marijuana prohibition during WWII.
It's time to do it again.
The way to end this political stalemate is to start literally from the
ground up. When farmers can grow hemp for biomass they will make a
profit energy farming. Then it will not take long to get 6% of
continental American land mass into cultivation for biomass fuels --
enough to replace our economy's dependence on fossil fuels. And as the
energy crop grows it takes in CO2 from the air; when it is burned the
CO2 is returned to the air, creating a balanced system. We will no
longer be increasing the CO2 content in the atmosphere. The threat of
global greenhouse warming and adverse climatic change will diminish.
This energy crop can be harvested with equipment readily available. It
can be "cubed" by modifying hay cubing equipment. This method condenses
the bulk, reducing trucking costs from the field to the pyrolysis
Sixty-eight percent of the energy in the raw biomass is contained in the
charcoal and fuel oils made at the facility. The charcoal has the same
heating value in Btu as coal, with virtually no sulfur to pollute the
atmosphere. The pyrolytic fuel oil has similar properties to no. 2 and
no. 6 fuel oil. The remaining energy is in noncondensible gases that are
used to co-generate steam and electricity.
To keep costs down pyrolysis reactors need to be located within a 50
mile radius from the energy farms. This necessity will bring life back
to our small towns by providing jobs locally. The pyrolysis facilities
will run three shifts a day.
Charcoal and fuel oil can be "exported" from the rural small town in the
agricultural community to the large metropolitan areas to fuel the giant
power plants generating electricity. When these utility companies use
charcoal instead of coal, the problems of acid rain will begin to
The charcoal can be transported economically by rail to all urban area
power plants. The fuel oil can be transported economically by truck
creating more jobs for Americans.
When this energy system is on line producing a steady supply of fuel for
utility companies, it will have established itself in commerce. Then it
will be more feasible to build the complex syngas systems to produce
methanol from biomass, or make synthetic gasoline from methanol by
adding the Mobil Co. process equipment to the gasifier.
To accomplish this goal of clean energy independence in America we must
demand an end to hemp prohibition, so American farmers can grow this
energy crop. Our government foolishly outlawed it in 1938.
Hemp is the world's most versatile plant. It can yield 10 tons per acre
in four months. Hemp contains 80% cellulose; wood produces 60%
cellulose. Hemp is drought resistant making it an ideal crop in the dry
western regions of the country.
Hemp is the only biomass resource capable of making America energy
independent. Remember that in 10 years, by the year 2000, America will
have exhausted 80% of her petroleum reserves. Will we then go to war
with the Arabs for the privilege of driving our cars; will we stripmine
our land for coal and poison the air we breathe to drive our autos an
additional 100 years; will we raze our forests for our energy needs?
During the Second World War, the federal government faced a real
economic emergency when our supply of hemp was cut off by the Japanese.
The federal government responded to the emergency by suspending
marijuana prohibition. Patriotic American farmers were encouraged to
apply for a license to grow hemp. They responded enthusiastically and
grew 375,000 acres of hemp in 1943.
The argument against undertaking this massive hemp production effort
today does not hold up to scrutiny.
Hemp grown for biomass makes very poor grade marijuana. The 20 to 40
million Americans who smoke marijuana would loath to smoke hemp grown
for biomass, so no one could make a dime selling a farmers hemp biomass
crop as marijuana.
It is time for the federal government to once again respond to our
current economic emergency by utilizing the same procedure used in WWII
to permit our farmers to grow American hemp so this mighty nation can
once again become energy independent and smog free.
by Lynn Osburn