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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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