NDLI: Factors driving refinery CO$_{2}$ intensity, with allocation into products: comment

Content Provider	Springer Nature Link
Author	Tehrani Nejad M., Alireza Saint Antonin, Valérie
Copyright Year	2013
Abstract	Recently, using a long-run refinery simulation model, Bredeson et al. conclude that the light transportation fuels have roughly the same CO$_{2}$ footprint. And, any allocation scheme which shows substantial difference between gasoline and diesel CO$_{2}$ intensities must be seen with caution. The purpose of this paper is to highlight the inappropriate modeling assumptions which lead to these inapplicable conclusions into the current oil refining context.From an economic point of view, optimization models are more suitable than simulation tools for providing decision policies. Therefore, we used a calibrated refinery linear programming model to evaluate the impact of varying the gasoline-to-diesel production ratio on the refinery's CO$_{2}$ emissions and the marginal CO$_{2}$ intensity of the automotive fuels.Contrary to Bredeson et al.'s conclusions, our results reveal that, within a calibrated optimization framework, total and per-product CO$_{2}$ emissions could be affected by the gasoline-to-diesel production ratio. More precisely, in a gasoline-oriented market, the marginal CO$_{2}$ footprint of gasoline is significantly higher than diesel, while the opposite result is observed within a diesel-oriented market. These two scenarios could reflect to some extent the American and the European oil refining industry for which policy makers should adopt a different per-product taxation policy.Any relevant and economic ground CO$_{2}$ policies for automotive fuels should be sensitive to the environmental consequences associated with their marginal productions. This is especially true in disequilibrium markets where the average and marginal reactions could significantly differ. Optimization models, whose optimal solution is fully driven by marginal signals, show that the refinery's global and/or per-product CO$_{2}$ emissions could be affected by the gasoline-to-diesel production ratio.
Starting Page	24
Ending Page	28
Page Count	5
File Format	PDF
ISSN	09483349
Journal	The International Journal of Life Cycle Assessment
Volume Number	19
Issue Number	1
e-ISSN	16147502
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-08-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Diesel production Gasoline production Linear programming Marginal CO$_{2}$ footprints Oil refining Environment Environmental Economics Environmental Engineering/Biotechnology Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Science

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