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The use of non-wood pulps

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Elizaveta Gogoleva

on 25 November 2012

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Transcript of The use of non-wood pulps

Esparto Cane Spread worldwide
On river- and lakesides
h=2÷3.5 m
42-51 % cellulose Bushes
h= 0.5÷1.5 m
North Africa, Spain, Portugal
45-50 % cellulose Typha Wetland habitat
h=2÷4 m Achnatherum Straw Wheat, rye, rice,
oat, barley
h=1.2÷2 m
hollow tube
35-51 % cellulose Bagasse Squeezed sugarcane's stems
Easy-decaying
Processing near sugar factory
40-43 % cellulose Gossypium Dry stiffened cotton stems
40% cellulose Close to
esparto
grass Corn straw Stems and leaves
40 % cellulose Tabacco Soya stems Bamboo Mulberry Vine Rapidly growing
0.4-1 m per 24 h)
h=30÷40 m
45-57 % cellulose The main differences between tree and plant fibers Typical raw materials
for non-wood pulp The use of non-wood pulps Fiber length Fiber width Cell wall thickness Spruce Pine Bamboo Straw 2.9 20-30 2.3-4.5 2.5-4.4 30 3.7-4.0 1.5-4.4 1-1.5 Bamboo Bagasse 4-10 1-4.0 10-25 3-4 Birch 1.1-1.5 16-22 3.0-3.6 Spruce Birch Pine Use of non-wood materials in different products Bagasse corrugating medium (60 - 90%)
bristol board (50 - 100%)
tissue (60 - 90%)
wrapping & bag papers (50 - 85%)
printing & writing (20 - 100%) Bamboo bristol board (50 - 100%)
liner board (60 - 100%)
wrapping & bag papers (80 - 100%)
newsprint substitute (50 - 70%) Cotton currency & security paper (50 - 100%)
high-grade book & writing (20 - 100%)
high-grade bond & ledger (20 - 100%) Esparto blotting paper (50 - 80%)
cigarette filter tip paper (50 - 70%)
lightweight papers (50 - 70%)
printing & writing (30 - 100%) Straw corrugating medium (60 - 90%)
glassine & greaseproof (40 - 90%)
printing & writing (20 - 90%)
strawboard (80 - 100%)
wrapping paper (50 - 60%) Use of non-wood pulp in
pulp & paper industry Use of non-wood materials Esparto Esparto Origins of non-wood materials 75,000 t. 25,000 t. 410,000 t.
Bamboo 275,000 t.
Bamboo 355,000 t.
Bamboo Bagasse
1 mill. tones per
1 year straw Esparto Bagasse Corn Bamboo Mulberry straw Esparto Bagasse Corn Bamboo Mulberry 5-10% of paper production worldwide is
produced from
agricultural crops Bamboo Straw 2nd generation biofuels Esparto Cane Bagasse Renewable power
generation source Corn Fodder Typical pulping processes
for making non-wood pulp Straw and Cane Chopping up to a size of
20-40 mm (straw) and
15-20 mm (cane)
Soda & kraft pulping
Alkali = 10-14% 5.5-6 h
T=160-165 °C
Brightness= > 85 %
Yield (straw) = 40-48 %
Yield (cane) = 44 % Corn straw Soda & kraft pulping
Alkali = 20-22 %
T = 162-170 °C
Yield = 41-43 % Bamboo Soda & kraft pulping
T = 140-150 °C
Yield = 35-37 %
Is bleached is harder
than straw Bagasse Separating from
parenchyma inner cells
Soda & kraft pulping
Alkali = 12 %
10 min T = 180 °C
Yield = 52 % Esparto grass Grass is not cut, just separated from roots
Soda & kraft pulping
Alkali = 10-14 %
T = 140-150 °C Gogoleva Elizaveta g0406720
Frontova Yulia g0406717 straw Esparto Bagasse Corn Bamboo Mulberry Non-wood Plant Fiber Uses in Papermaking. By Robert W. Hurter. "Agricultural Residues", TAPPI 1997
Structure of Wood. Society of Wood Science and Technology. Teaching Unit No. 1
Technology of pulp. Vol.3. Cleaning, drying and bleaching of pulp. Moscow, 1994
Guide for planning pulp and paper enterprises. Rome, 1973
Sustainable pulp production from agricultural waste. Pasi Rousu, Päivi Rousu, Juha Anttila
Non wood plants as raw material for pulp and paper. Katri Saijonkari-Pahkala. Academic dissertation
The potential for bagasse pulping in Australia. Covey, Rainey and Shore. 2006
Forest Resources and Sustainable Management. Papermaking Science and Technology. Kellomäki Seppo. Helsinki, Finland. p. 179. 1998
Esparto grass, raw material of papermaking. First part. Akchiche Omar, Messaoud Boureghda Khadra
Sonochemically modified wheat straw for pulp and papermaking to increase its economical perfomance and reduce environmental issues. Levente Scóka, Attila Lorincz, and Andras Winkler. 2008. "Sonochemically modified wheat straw," BioResources 3(1), 91-97
http://www.futoncoversonline.com/bamboo-sheet-sets.htm
http://www.corbisimages.com/stock-photo/rights-managed/WK010795/splitting-bamboo-for-pulp-mill-in-china
http://www.wikipedia.org/
http://vivbizclub.com/blog/2010/02/02/bagasse/
http://spanish-finca.com/nature.html
http://kenttodayandyesterday.blogspot.fi/2012_02_01_archive.html References
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