LCA OF WOOD-BASED ETHANOL-DIESEL BLENDS

Posted by AFRIVIERE
Type: 
Full LCA available on the web
Comparative: 
yes
Publication year: 
2003
Language: 
English
Code: 
Vehicles/Fuels
Product: 
Low ethanol-content diesel blends (E-diesel)
Quality and sources
Is the study a: 
Detailed LCA
Was a critical review performed?: 
No
Sponsor name(s): 
CHALMERS UNIVERSITY OF TECHNOLOGY
Sponsor name(s): 
AKZO NOBEL
Sponsor type: 
University
Summary
Functional unit: 
1 km driven by truck or by Bus in Sweden
Goal and scope of the summary: 
This is a comparative LCA to identify whether there are real savings in energy and emissions between Diesel and E-Diesel. System boundaries include: production and use, i.e. transportation, raw materials production, disposal scenarios and vehicle use. Different comparisons are made : between Diesel, E-diesel compositions (E-10 diesel and E-15 diesel)-and in 2 different cases/usages :a bus fleet driven under urban traffic conditions and a truck fleet run mainly on highways. Geographic scope is Sweden

The study conclusion is that there are some positive aspects regarding the environmental performance of E-diesel. Impact on global warming diminish with
about 10% in CO2 emissions compared to ordinary diesel by replacing “fossil” CO2 emissions with bioethanol’s “green” CO2.
Air quality at the local level is either improved (20% and 10% decrease in
particulate matter and SO2 emissions) or remains stagnant (NOx, CO and HC emissions, which may be reduced after fixing an optimised exhaust gases aftertreatment).
Results from this study present thus E-diesel as an attractive option due to its environmental behaviour and engine performance (it can be successfully implemented in unmodified diesel engines).
It also reckognises that E-Diesel is still in an experimental stage (study was done in 2003)and that further studies, tests, data accuracy validation need to be carried out to strengthen the analysis results.

Material impact(s): 
Global warming
Raw material impact level: 
Medium
Shipping impact level: 
Low
Usage impact(s): 
Global warming
Usage impact level: 
High

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