Blenders, stockpots and dryers have their separate uses in
the home. But would you believe that the future of the environment and foreign
oil dependency could be influenced by these simple appliances?
Dr. Ben de Mayo, physics professor at UWG, shows an example of his work with oil sands. |
Currently bitumen is extracted from the sand through a
method that de Mayo deems unclean and inefficient. Imagine a giant stockpot of
boiling water. The oil-rich sand is dumped into the pot and then sinks to the
bottom while the oil floats to the top.
Afterward, the oil is skimmed from the surface of the water
like fat from boiled chicken, leaving behind a toxic broth that is dumped into
man-made lakes. These highly polluted ponds have the unfortunate side effect of
attracting wildlife.
The system de Mayo devised can be best described as a
large-scale dryer. The funnel-shaped object would spin the heated sand at rapid
speeds and separate the bitumen.
“The idea was so simple I thought someone would have done it
already,” said de Mayo. “I looked and I couldn’t find anything on it, so I
called a patent lawyer.”
His experimentation with the technique utilized a 3300-rpm
centrifuge, a machine used for spinning objects at high speeds. First he heats
the oil sand before adding it to the centrifuge, where it spins rapidly for
about an hour. The end result renders 80 percent of the bitumen from the sand.
“I’d like to see [oil companies] adopt this method because
it’s cleaner and could benefit places like Utah that don’t have a lot of
water,” he said.
The current process takes more fuel to produce than it
actually yields. The de Mayo process requires 75 percent less energy and no
water. Because of the lower energy requirements, the device would also decrease
the production of green house gases. The absence of water used in the process
would nullify water pollution caused as a result of the current method.
The device can also separate oil from water, making it an
ideal way to handle an oil spill. The next step for de Mayo is to allocate
funding for an engineer and test model. The larger-scale model is projected to
be the size of a washing machine. He is expecting to hear a decision from the
United States patent office in the next three to four months.
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