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TUSCALOOSA, Ala. – A University of Alabama chemistry graduate
student is on the way to eliminating the smell synonymous with the
many paper plants located throughout Alabama and the rest of the
country.
Richard P. Swatloski, who is working on his doctorate in chemistry
at UA’s Center for Green
Manufacturing, has been awarded the 2003 Kenneth G. Hancock
Memorial Student Award in Green Chemistry. The Enterprise native
will be presented the award during the Presidential Green Chemistry
Challenge Awards ceremony at the National Academy of Sciences Auditorium
on June 23 in Washington, D.C.
The award is for his discovery of a new solvent system to dissolve
cellulose. “Our goal is to develop greener, more environmentally-friendly
ways of doing things,” Swatloski said. “The use of cellulose
based materials is appealing from an environmental point of view
as traditional solvents have significant processing limitations,
as well as environmental consequences.”
Cellulose, found in plants, is nature’s most abundant chemical
and is a cheap and renewable resource. However, the process used
today for breaking down cellulose is the same as it has been for
almost a century with CS2 (carbon disulfide), which gives off a
strong odor. The multistepped process creates a larger amount of
waste and byproduct than the newly discovered method.
“Legislatively, there will come a time when today’s
methods will be restricted,” Swatloski said. “We’re
hoping to stay ahead of the curve and significantly reduce the time
it will take to implement new methods.”
His research has attempted to combine two major principles of green
chemistry: the development of alternative solvents that are more
environmentally benign; and the utilization of nondepleting, biorenewable
resources.
“We have shown that some new, potentially environmentally-friendly
solvents, ionic liquids, can act as solvents for cellulose,”
Swatloski said. “The cellulose dissolves like sugar in a glass
of iced tea. This can make the process cleaner and more efficient,
along with a reduction or elimination of environmentally undesirable
byproducts.” Ionic liquids, essentially salts with low melting
temperatures, have unique properties that contribute to their “greenness”
as a class of solvents, including a minimal odor, high thermal stability
and non-flammability.
Another result of his research is that Swatloski has been selected
for student participation at the 53rd Meeting of Nobel Laureates
in Lindau, Germany, from June 30-July 4.
The United States Department of Energy Office of Science is sponsoring
18 graduate students from across the country to attend the meeting.
Since 1951 Nobel Prize winners and students in chemistry, physics,
physiology or medicine have met annually in Germany. Each year an
international group of more than 400 scientists is invited to attend
the weeklong meeting.
“It’s an unbelievable opportunity, and I’m honored
to have been chosen,” Swatloski said. “I am particularly
interested in learning from the scientists about chemical and biological
weapons and the possible applications of cellulose filters with
active molecules that respond when in the presence of contamination.”
Such responses are seen as a possibility for an early warning system.
While there are formal lectures in the mornings, the afternoons
and evenings are set-aside for the students to meet informally with
the Nobel Laureate scientists. The sessions provide world-renowned
scientists with an opportunity to motivate and inspire students.
Eligible students must have completed two years, but not more than
three years, toward a doctoral degree in geology, medicine or a
related discipline, be a U.S. citizen and currently be enrolled
at a university as a full-time graduate student. They also must
be participating in a research project funded by the Office of Science.
The Department of Chemistry
and The Center for Green Manufacturing
are housed in the College of
Arts and Sciences at The University of Alabama – the largest
division and the largest public liberal arts college in the state,
with approximately 5,000 undergraduate and 1,000 graduate students.
The College has received national recognition for academic excellence,
and A&S students have been selected for many of the nation's
top academic honors, including 15 Rhodes Scholarships, 13 Goldwater
Scholarships, seven Truman Scholarships and 15 memberships on USA
Today's Academic All-American teams.
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