Enviromental and economic assessment of the optimized biodiesel production in Spain from domestic raw materials

Autores UPV
Año
CONGRESO Enviromental and economic assessment of the optimized biodiesel production in Spain from domestic raw materials

Abstract

Purpose:The Renewable Energy Directive (RED) establishes greenhouse gas (GHG) reduction thresholds to be taken into account by economic operators. The objective of the present study is to analyze the environmental and economic performance of the optimized biodiesel supply chain in Spain when using only domestic feedstock. Methods:Amathematical programming model is proposedin a multi-sectorial setting, optimizing the arable sector and the industry separately, according to economic criteria. This yields the combination of rapeseed, sunflower and used cooking oil (UCO) that maximizes the producer surplus, while life cycle emissions are simultaneously calculated for the optimal agro-industry configuration. Results and discussion:UCO biodiesel is the most interesting option in environmental terms and also in economic termswhen a double-counting scheme is simulated. The food-based pathways are only viable thanks to the extraction and agricultural production.As for global warming, sunflower and rapeseed biodiesel generate 46.3 and 56.0 g CO2/MJ, respectively; only 5.5 g CO2/MJ are caused by UCO biodiesel. Increasing UCO biodiesel production delivers an 88.1% GHG saving for the entire domestic mix. Conclusion:Economic optimization in combination with life cycle assessment can help to identify viable pathways for biodiesel production in Spain in compliance with the EU sustainability requirements.