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Carbon LIfe Cycle of a Wood Pencil

ENVT655, Fall 2014
by

K Robb

on 7 December 2014

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Transcript of Carbon LIfe Cycle of a Wood Pencil

Carbon Life Cycle
by Kathleen Robbins

Wood Pencil
Raw Materials
Manufacturing
Retail
Consumer
Graphite
California Cedar
Clay
Pre-Manufactured Materials for Assembly
Pencil Lead
http://www.kpbs.org/news/2009/sep/23/study-refutes-practice-removing-dead-trees/
http://academic.emporia.edu/aberjame/ice/lec14/lec14.htm
http://elcoraresources.com/projects-2/
http://www.gutberlet.com/en/Produkte/Schreibgeraeteteile/Zwingen_Radierer/zwingen-radierer.php
http://hdwallpaperfun.com/screensaver/yellow-paint-wallpaper-desktop-computer-127419.html
http://pencils.com/the-great-eraser-caper/
http://www.pencilpages.com/articles/sanford/tour2.htm
http://www.cnn.com/2011/12/19/world/asia/north-korea-leader-culture/
http://www.astonishingprovidence.com/invisiblehand.htm
http://flickrhivemind.net/User/univerlacite/Recent
http://nymag.com/news/features/52452/
http://www.dreamstime.com/stock-photos-pencil-sharpener-waste-painted-background-image30758003
https://fredspencils.wordpress.com/page/2/
http://nutritionintervention.wordpress.com/2013/03/09/in-a-junk-food-laden-world-the-mediterranean-diet-stands-no-chance/
http://nehandaradio.com/2010/01/29/mugabes-security-man-critically-injured/
http://www.hmontgomeryjr.com/?p=570
Ferrule
Lacquer
Glue
Eraser
Lead blended and extruded
Lead inlay
Glued
Sandwiched
Cut to shape
Lacquered
Ferruled
Eraser Insert
Sharpened
Packaged
Slats
Cut
Landfill
Calculations
Images
Questions?



THANK YOU!
Estimation of log weight*
Log Length 50 feet
Breast Diameter 11 feet
Crown Trunk Diameter 6 feet
Specie: m(California) Incense Cedar
Estimated weight of one cedar log 109,730 lbs
*weight calculator used:
http://www.woodweb.com/cgi-bin/calculators/calc.pl

Retailer Transport Calculations**
Distance between St. Louis, MO and

Seattle, WA 2144 miles
San Diego, CA 1854 miles
Brownsville, TX 1165 miles
Miami, Fl 1215 miles
Bangor, ME 1422 miles
Sum 7800 miles

Average 1560 miles

Divided by 2 under the assumption that most locations are half-way between the manufacturer and the cities selected.
780 miles

**Locations selected and the most distant cities from St. Louis within the United States.

References
Bhowmik, R. (n.d.). Ferromagnetism in lead graphite-pencils and magnetic composite with CoFe2O4 particles. Retrieved December 7, 2014, from http://arxiv.org/pdf/1107.1662.pdf
Christopher, D. (2007, May 1). 20 Things You Didn't Know About ... Pencils. Retrieved November 29, 2014, from http://discovermagazine.com/2007/may/20-things-you-didnt-know-about-pencils
EGRID 9th edition Version 1.0 Year 2010 Summary Tables. (2014, February 1). Retrieved December 7, 2014, from http://www.epa.gov/cleanenergy/documents/egridzips/eGRID_9th_edition_V1-0_year_2010_Summary_Tables.pdf
How pencils are made by Staedtler - The Office Supplies Supermarket. (2009, December 21). Retrieved November 22, 2014, from
How pencils are made today - Derwent Pencil Factory, Cumbria, UK. (2013, May 2). Retrieved November 22, 2014, from
How Products Are Made. (n.d.). Retrieved November 22, 2014, from http://www.madehow.com/Volume-5/Eraser.html
How Products Are Made. (n.d.). Retrieved November 22, 2014, from http://www.madehow.com/Volume-1/Pencil.html
McLean, M. (2010, June 7). How A Pencil Is Made. Retrieved November 22, 2014, from
Murphy, R. (2012, September 9). How much energy goes into making a pencil? Retrieved November 22, 2014, from
Musgrave Pencil Company. (n.d.). Retrieved November 22, 2014, from http://www.tnhistoryforkids.org/places/musgrave_pencil
Petroski, H. (1990). The pencil: A history of design and circumstance. New York: Knopf .
Schowalter, E. (n.d.). About Cedar Trees. Retrieved November 29, 2014, from http://www.aboutcedartrees.com/

CO2 absorbed by the growth of the trees 0.00412
Transport Emissions 12.84652
Manufacturing 0.001163
TOTAL CARBON EMISSIONS PER PENCIL 12.843565
lbs of CO2
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