Transcript www.recycleark.org

Pulp & Paper:
A Sustainable Industry
Kevin C. Burk
Environmental Engineer
Clearwater Paper Corporation
P.O. Box 727, McGehee, AR 71654
T 870.730.2561 F 870.730.2404
[email protected]
www.clearwaterpaper.com
What is papermaking?
 Papermaking is the process of taking a fiber source
such as wood, cotton, or some other fibrous material,
arranging those fibers in solution onto a screen, &
removing the excess water by adding pressure and
heat.
 En.wikipedia.org/wiki/papermaking
 Inventors.about.com
 www.paperindustry.com/paper-making-process.asp
Q: What is the breakdown of
fresh and recycled fiber used
A: Fresh
sources supply
69 percent
and recycled
for
making
paper
in Canada
sources offer 31 percent of the total fiber input
used the
in making
paper. – States?
and
United
What is the papermaking
cycle?
Q: Will recycling paper help
save
the tropical rain forests?
A: The trees that grow in the tropical rain forests are
rarely harvested to make paper. The deforestation
occurring in the tropical rain forests is mainly due to
population pressure. In the world's under-developed
nations, more than 90 percent of the deforestation
occurs because of the demand for increased
agricultural land and/or firewood. –
Q: Would we run out of fiber if
we maximized recycling?
A: Yes. Recycled fiber breaks down with each
use so without continually adding fresh fiber;
we would not be able to maintain our use of
different paper products. –
Q: How many trees are planted
each year in the U.S.?
A: Over 2 ½ billion trees are planted in the U.S. each
year. The forest community plants over 1 ½ billion of
these trees; that's an average of 4 million new trees
planted every day by the forest community. Millions
more trees regrow from seeds and sprout naturally. –
“It is very likely that more people live in closer
proximity to more wild animals and birds in the
eastern United States today than anywhere on the
planet at any time in history. This region’s
combination of wild animals, birds and people is
unique in time and place, the result of a vast but
largely unnoticed regrowth of forests, the return
of wildlife to the land, and the movement of people
deeper into the exurban countryside.” – Jim Sterba,
Nature Wars
Q: How much of a harvested
tree is actually used? Is any
part wasted?
A: The forest products industry has found uses for almost every
part of a tree, so virtually all of the tree is used. For instance,
lumber and building products can be made from the trunk,
primarily from large trees whose diameters are greater than 8".
The remaining wood is recovered in the form of trimmings and
wood chips, and is used to make paper. The natural chemicals
within the wood chips are recovered and made into useful
products such as turpentine, plastics, food flavorings, and
photographic film. The bark of the tree is ground or chipped to
make garden mulch, or it can be burned in a furnace to generate
energy to run a paper mill. Leaves, needles, and small branches
are generally left in the forest to replenish the soil by adding
valuable organic matter. This also helps to hold water and
prevent excessive run-off on the forest floor. –
Why do we recycle paper?
The other side of
Papermaking:
Isn’t papermaking resource
intensive?
"Our customers—and the consumers they
serve—care about the quality of the
products they use. They also care about the
manner in which those products are made.
They want to know that the raw materials
and manufacturing processes we use are
sustainable environmentally and socially.
They want to know that we are mindful of
the future in every respect and that we are
committed to continuously improving
sustainability companywide.“
Linda Massman
President and CEO
http://www.clearwaterpaper.com/environmental-performance/ourpolicies
DIGESTER
BLACK LIQUOR
RECOVERY
WHITE LIQUOR
(NaOH + Na2S)
LIME MUD
(CaCO3)
Steam
Electricity
GREEN LIQUOR
(Na2CO3)
LIME KILN
CALCIUM OXIDE
(CaO)
So what does the future hold?
The Lime Kiln Flash Dryer
Questions?