BREWING A FUTURE: ZERO EMISSIONS FACTORY BOLSTERS COMMUNITY by Keto Mshigeni, Yes!
Wesley Roe and Marjorie Lakin Erickson
lakinroe at silcom.com
Mon Nov 20 07:09:10 PST 2000
Hi everyone
here is a great article on using natural systems design , this shows how
the design principles the problem is the solution. Permaculture uses these
same principles and they are happening elsewhere too under many names, this
is so good to see a synergy is taking place all over the world and this is
one example
wes.
Brewing a Future
A southern African brewery spawns a chicken farm, a fish
farm, a mushroom
plantation, a Spirulina plantation, an earthworm farm,
jobs, and hope
In natural systems, there is no such thing as waste. Everything
thats excreted, exhaled, or
exhausted from one organism is used by another. Some of the
most innovative industrial
designers are following natures model and turning waste into
valuable by-products.
Waste is particularly unacceptable in poor regions of the
world, where food, water, and
energy are scarce. Gunter Pauli, founder of the Zero Emissions
Research Institute, and
George Chan, a civil engineer from Mauritius, are working
primarily in the Third World on
designing industrial processes that turn waste products into
valuable inputs for other
processes particularly those associated with meeting basic needs.
As Paul Hawken says, "Waste is too expensive; its cheaper to
do the right thing."
Theres a new brewery in Namibia in southern Africa that sounds
too good to be true: "Good
beer, no chemicals, no pollution, more sales, and more jobs."
When the chairman of Namibia
Breweries heard from George Chan, an engineer, that it is
possible to brew beer and
generate no waste, he could not believe it. But as a veteran in
the brewing industry with 60
years of experience in the German tradition, Werner List was
willing to listen.
To his surprise, he found that Chans proposals were simple and
made a lot of sense. The
Mauritius-born civil engineer was simply applying the
principles of nature: whatever is waste
for one is food for someone else.
Namibia Breweries had decided to construct a sorghum brewery in
Tsumeb, a five-hour
drive north of Windhoek, the capital city; the question was,
could the zero-emissions concept
be applied in the desert? Funded by the United Nations
University, George Chan undertook
a field visit in the summer of 1995 and concluded that it was
not only feasible, it was
necessary.
Less than 18 months later, on January 31, 1997, the first phase
of the project was
inaugurated by Namibian President Sam Nujoma.
The system, engineered and built under the supervision of
George Chan, is the result of
extensive research and design over the Internet. Teams of
scientists from all parts of the
world worked together in cyberspace to figure out how to make
best use of the spent grain,
the alkaline waste water, and the CO2 gases that make up 98
percent of the waste from the
brewery. The solutions they developed turn all waste into
products that are particularly
valuable in a country that lacks water, food, and cash.
Traditionally, spent grain left over after the brewing process
is given away to farmers to use
as cattle feed. However, cattle cannot digest the fibers, and
the result is a lot of gas. Cattle
are the second largest source of methane gas, one of the major
causes of global warming. But
this lignin-cellulose component, which makes up 70 percent to
80 percent of the spent grain,
can be broken down by mushroom enzymes.
So, George Chan brought S.T. Chang, professor at the Chinese
University of Hong Kong, to
Namibia. This world expert on mushrooms trained the Namibians
in the cultivation of this
high-priced product, which the country traditionally imported.
Each day, the brewery will
produce four tons of spent grain enough to grow one ton of
mushrooms. Professor Chang
is confident that Namibia will soon be exporting rather than
importing mushrooms.
The spent grain is up to 26 percent protein. Wasting protein is
unacceptable, particularly in
Africa. So George Chan, in cooperation with Namibia University,
is initiating the cultivation of
earthworms, which are to be used as chicken feed. For a country
that imports all chicken
feed and 80 percent of its chickens, this is a blessing.
Not a drop of water ...
When George Chan learned that Namibia Breweries had secured a
license to extract ground
water, but planned to discharge 80 percent of it, he designed a
system that ensures not a
single drop will be lost. Normally, the law requires that the
waste water, which is alkaline,
undergo an expensive chemical treatment process to make it pH
neutral. Instead, the alkaline
water will be used for the cultivation of Spirulina algae,
which is up to 70 percent protein
exactly what is needed locally to fight child malnutrition.
Instead of wasting protein, the
brewery becomes a protein factory, and the waste water will
generate additional revenues
instead of extra costs.
The residual water is then channeled to fish ponds where fish
farming is introduced. As in
China and Vietnam, multiple species of fish and aquatic plant
life will mimic a natural
ecosystem, keeping disease to a minimum and maintaining the
health of the ponds. By
producing 15 tons of fish per hectare per year, the brewery
will also become a fish factory.
The two most needed ingredients for a fish farm are water and
feed. Namibia traditionally had
neither. Now, it has abundant water for fish farming and feed
provided by the
earthworm/chicken/mushroom waste streams.
There is more; the chicken manure goes through a digester and
produces methane gas. The
gas, which would otherwise be released into the atmosphere, is
used as a fuel, reducing
demand on wood which, for 80 percent of the Tsumeb population,
is the main source of
energy.
The Namibian brewery will produce a total of 12 products in
addition to beer. This integrated
biosystem will produce seven times more food, fuel, and
fertilizer than a conventional
operation and four times as many jobs.
The opening of the brewery in Tsumeb, Namibia, is not just a
local affair. Representatives
from around Africa, and Asia, Australia, Europe, and Latin
America will attend a special
training course to be held in Windhoek. This course is aimed at
unleashing entrepreneurship
and creativity, resulting in more jobs and a better use of
natural resources.
Meanwhile, at the UN University, we have expanded our research
on the application of the
zero- emissions concept to vegetable oils (palm, coconut and
olive), construction materials
(cement, bamboo), paper, fruits, sugar, seaweed, and sisal,
with a particular emphasis on
techniques and products that can be used in the developing world.
The industrial model of the future
William McDonough, dean of the University of Virginias school
of architecture, has said,
"Only industry is capable of producing things no one wants."
Zero emissions is simply the continuation of the drive of
industry toward higher levels of
productivity and away from waste. After zero defects (total
quality), zero accidents (total
safety), zero inventory (just-in-time), zero emissions means
that all raw materials will be fully
used.
This model could well prove the economists and politicians
wrong. They believe that in order
to increase the productivity of a company, you have to reduce
jobs.
We are showing that when you focus on the productivity of the
raw materials, you can
generate more income, higher returns, and more jobs, while at
the same time eliminating
pollution. This is the industrial model of the future. s
Professor Keto Mshigeni, a respected botanist and pro-vice
chancellor of the University of
Namibia, helped introduce the zero-emission concept to
Namibia.. Email: kmshigeni at unam.na
Gunter Pauli is founder and director of the Zero Emissions
Research Institute (ZERI) at the UN
University in Tokyo. He is the former CEO of Ecover, a Belgian
company that makes natural
cleaning products. His most recent book, Breakthroughs: What
Business Can Offer Society,
©1996, is published by Epsilon Press, Surrey, UK.
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