Views
5 years ago

BIOENERGY FOR EUROPE: WHICH ONES FIT BEST?

BIOENERGY FOR EUROPE: WHICH ONES FIT BEST?

56 4 Environmental

56 4 Environmental results: presentation, discussion and interpretation 4.2.5 SME versus diesel fuel for transportation Use of fossil fuels Greenhouse effect Acidification Eutrophication Summer smog Nitrous oxide** Human toxicity** * How to interpret the diagram Advantages for biofuel Advantages for fossil fuel -1000 -800 -600 -400 -200 0 200 400 600 800 1000 European inhabitant equivalents* per 100 million km The figure shows the results of complete life cycle comparisons where SME is used in passenger cars instead of diesel fuel. The results are given for a distance of 100 million km being covered by passenger cars using the biofuel instead of fossil fuel. This is equivalent to the average annual mileage of about 4,000 Europeans. In this case for example the amount of greenhouse gas emissions that is being saved by substituting diesel fuel by SME is equal to the amount which about 800 European citizens would on average generate in one year (this is what is meant by “European inhabitant equivalents”). Remarks and conclusions The results show that both SME as well as diesel fuel have certain ecological advantages and disadvantages. • Advantages of the biofuel: use of fossil fuels, greenhouse effect, eutrophication • Advantages of the fossil fuel: acidification • Low or no significance: summer smog The data for ozone depletion and human toxicity tend to have a high uncertainty. Therefore these categories should not be included in the final assessment. (**See Chapter 4.1.2 and for details on all impact categories 3.3 and 3.4) A further assessment in favour of or against SME or diesel fuel cannot be carried out on a scientific basis, because for this purpose subjective value judgements regarding the individual environmental categories are required which differ from person to person. 5985

4.2 European results: biofuels compared to fossil fuels 57 4.2.6 ETBE versus MTBE for transportation (components of gasoline) Use of fossil fuels Greenhouse effect Acidification Eutrophication Summer smog Nitrous oxide** Human toxicity** * How to interpret the diagram Advantages for biofuel Advantages for fossil fuel -1000 -800 -600 -400 -200 0 200 400 600 800 1000 European inhabitant equivalents* per 1 billion km The figure shows the results of complete life cycle comparisons where gasoline with component ETBE from sugar beet (12 vol. % = 10 % of energy content) is used in passenger cars instead of gasoline with fossil MTBE (12 vol. %). The results are given for a distance of 1 billion km being covered by passenger cars using the gasoline with the bio-component instead of fossil component. This is equivalent to the average annual mileage of about 40,000 Europeans. In this case for example the amount of greenhouse gas emissions that is being saved by substituting MTBE by ETBE is equal to the amount which nearly 800 European citizens would on average generate in one year (this is what is meant by “European inhabitant equivalents”). Remarks and conclusions The results show that both ETBE as well as MTBE have certain ecological advantages and disadvantages. • Advantages of the biofuel: use of fossil fuels, greenhouse effect • Advantages of the fossil fuel: acidification, eutrophication • Low or no significance: summer smog The data for ozone depletion and human toxicity tend to have a high uncertainty. Therefore these categories should not be included in the final assessment. (**See Chapter 4.1.2 and for details on all impact categories 3.3 and 3.4) A further assessment in favour of or against ETBE or MTBE cannot be carried out on a scientific basis, because for this purpose subjective value judgements regarding the individual environmental categories are required which differ from person to person.

Bioenergy Update 10-02 - General*Bioenergy
Maximising the environmental benefits of Europe's bioenergy potential
Bioenergy Value Chain Research And Development Stakes ... - FARA
LCA of a biorefinery concept producing bioethanol, bioenergy - avniR
Desktop Management Tools — Which One Is the Best?
Choose The One That Best Fits Your Lifestyle! - Java Fundraiser
One Size Fits One: Best Practices for Building - Right Management
Hot vs. Cold Ionization Gauges: Which One is Best for Me?