104 Friday, September 9, 1983
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year be filled
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PAUL WORONA &
DAUGHTER LINDA
THE DETROIT JEWISH NEWS
Wide Range of Applications Predicted
for Israel-Developed Emulsan Product
By SUE ROSEN
Science Features
from Israel
TEL AVIV — Three Is-
raeli scientists have de-
veloped a bio-technological
product which removes the
left-over oil in tankers so
that it does not pollute the
sea; the resulting mixture
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might then be used as fuel
for power plants.
Tel Aviv University sci-
entists call their product
"Emulsan" because it emul-
sifies or enables oil to mix-
with water. They say it has
a vast range of potential ap-
plications, from improving
the flow of oil in cold pipes to
the production of cosmetics.
"Our discovery combines
ecology and economics.
While most scientific work
elsewhere is based on
breaking down chemicals
and insecticides, we want to
recover them and then put
them to use," Prof. Eugene
Rosenberg, a microbiologist
says.
The TAU discovery is
the continuation of re-
search Prof. Rosenberg
did in the early 1970s with
his partner, Prof. David
Gutnick. At the time, they
found that 'oil-eating"
bacteria could be used as
an environmental "oil
mopper" to break down
residual oil in tankers
and prevent the damage
of oil spills.
About 1 percent of oil
transported in tankers is
washed into the sea through
accidental oil spills or the
deliberate discharge of con-
taminated ballast water be-
fore the tankers are refuel-
led, the scientists say.
Determined to find out
how the bacteria actually
clean out the tankers, the
Israeli team discovered
after years of experimenta-
tion that the microbes
secrete a very strong
"biological detergent." The
scientists analyzed its
chemical make-up and now
produce the compound,
Emulsan, chemically in the
laboratory in huge fermen-
ters of 50,000 and 100,000
liters.
In developing this method
of flushing out oil tankers
with the Emulsan prepara-
tion, Prof. Rosenberg, 47,
and Prof. Gutnick, 43, im-
migrants to Israel who are
American-born and edu-
cated at California univer-
sities, further discovered
that the presence of Emul-
san creates a stable oil-
water mix which is capable
of burning efficiently.
They found that when
the Emulsan is added to
the tankers, the oil floats
to the surface in droplets
they call Emulsanosol —
oil covered with a thin
coat of Emulsan and then
a layer of water. One of
the potential applica-
tions being explored is
the use of the Emul-
sanosol, which contains
up to 25 percent water, as
a fuel source, reports
Prof. Rosenberg.
According to Prof. Rosen-
berg, mixtures of fuel and
water are known to burn
more efficiently and to be
less pollutant; they have al-
ready been used in some
racing cars and aircraft
through mechanical injec-
tion systems. The Emulsan
makes it possible for the
first time to stabilize oil in
water through a bio-
chemical method.
While there is currently a
world oil glut, fuel is still
very expensive and an acute
problem for households dur-
ing the cold winter months.
The Israeli team says the
potential use for the Emul-
san of adding it to fuel, so
that water can be added,
will save about 10 percent
in oil. The fuel is expected to
burn just as efficiently, they
say.
Among the many other
possible uses for Emulsan
that the scientists envision
is the thinning of fuel in
pipelines. Heavy oil is dif-
ficult to pump. This problem
is especially serious in very
cold places, such as Alaska,
where energy is consumed
to heat the oil before it can
be pumped.
The scientists found
that Emulsan can also be
used to extract oil from
tar sands, a process
which has remained
largely untapped due to
the technological diffi-
culties involved.
Since Emulsan can also
bind with metals, it could
potentially be used to purify
waste water and remove
toxic metallic substances,
such as uranium, particu-
larly from atomic energy
plant wastes.
Because of its versatility
and efficiency as a bio-
emulsifier, the scientists be-
lieve the Emulsan can be
Dulzin Discusses the Issues
at World Zionist Congress
n1t3 72,$),„,
-mor
May the coming
used in a wide variety of
industrial applications, in
fields ranging from cosme-
tics, pharmaceuticals and
paints to fertilizers, textiles
and detergents.
TAU signed an agree-
ment with Petroferm
U.S.A., a company in
Amelia, Fla., which has
worldwide rights to market
the chemical. Prof. Rosen-
berg said he believes that
scientists are only begin-
ning to tap the potential for
exploiting bacteria for
industrial use.
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NORMAN M. & EDYTHE
KATZ & FAMILY
vanDn nan3
111Ln
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Arieh Dulzin, kneeling at left, chairman of the
Executive of the World Zionist Organization and the
Jewish Agency, is pictured discussing his position on
issues on the agenda of the 30th Zionist Congress.
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