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March 2, 2009 / or4green

New references: bottled water LCA and more

Energy implications of bottled water
PH Gleick and HS Cooley
in Environmental Research Letters, 4, 2009, 014009, doi: 10.1088/1748-9326/4/1/014009
A primary conclusion of the paper is:
“Combining all of the energy inputs totals, we estimate that producing bottled water requires between 5.6 and 10.2 MJ/l — as much as 2000 times the energy cost of producing tap water.” (p6)
Those units are megajoules per liter. The authors assume a thermal to electrical energy conversion with efficiency of 0.33, which translates the 5.6 to 10.2 MJ/l to about 0.5 to 1 kWh in electrical energy. 1 kWh would be the equivalent of a toaster running for an hour. Note also that this is an open access journal so readers can access the full text by following the link above regardless of library access.
file under: LCA, water

Reverse logistics network design for the collection of End-of-Life Vehicles in Mexico
Reynaldo Cruz-Rivera and Jürgen Ertel
in European Journal of Operational Research, Volume 196, Issue 3, August 2009, Pages 930-939
file under: reverse logistics, clsc, vehicles

Wind power integration studies using a multi-stage stochastic electricity system model
Meibom, P.; Barth, R.; Brand, H.; Weber, C.
in Power Engineering Society General Meeting, 2007, IEEE, 24-28 June 2007 Page(s):1 – 4
file under: wind power, stochastic modeling, electricity markets

The ones that follow are not journal articles, nor are they explicitly about OR, but are interesting reads:

The Greenest Building Is One That Already Exists
in The New Haven Preservation Trust
This mostly consists of excerpts from a speech by Richard Moe, President of the National Trust for Historic Preservation, at the National Building Museum in Washington, D.C. on December 13, 2007. The speech closes with this:
“Here’s what we have to keep in mind: No matter how much green technology is employed in its design and construction, any new building represents a new impact on the environment. The bottom line is that the greenest building is one that already exists.”
file under: green building, LCA
Update: There is a LEED rating for “Existing Buildings: Operations & Maintenance”.

How Green Is My Orange?
Andrew Martin
in The New York Times, January 21, 2009
Interesting article about the carbon footprint of orange juice. The fertilizer turns out to be the biggest culprit.
file under: carbon footprint, LCA

E-waste looms behind solar-power boom
by Martin LaMonica
in CNET Green Tech, January 14, 2009
This is about a report on toxic chemical waste from solar panel manufacturing. The report (pdf) by Silicon Valley Toxics Coalition (SVTC) recommends mitigating the use of such chemicals and a take-back program for panels at end of life. There is certainly a cradle-to-cradle feel to the report. The SVTC also has a report out on nanotechnology.
file under: solar, waste flow, cradle-to-cradle

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