Used Cooking Oils in the Biogas Chain: A Technical and Economic AssessmentReport as inadecuate


Used Cooking Oils in the Biogas Chain: A Technical and Economic Assessment


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Department of Agricultural and Food Sciences, University of Bologna, Viale Giuseppe Fanin 50, 40127 Bologna, Italy





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Academic Editor: Thomas E. Amidon

Abstract The current concerns on global energy security, climate change, and environmental pollution represent some of the major elements of the growing interest on renewable energy. In this framework agro-food energy systems are at the center of a twofold debate: on the one hand they represent a key option for energy production while on the other their sustainability is threatened by the expansion of the bioenergy market that could lead to negative social and environmental consequences. The aim of this work is to evaluate—through a case study—the technical and economic feasibility of the replacement of energy crops ECs with used cooking oil UCO in an anaerobic digestion AD full-scale plant. At this purpose, a full-scale plant performing AD was monitored for two years. Three scenarios were developed and compared to evaluate the impacts and the potential benefits in terms of land saving in case of a substitution of ECs with UCO. Results highlighted a reduction of land use of over 50% if UCO is introduced in co-digestion with ECs. The lack of an appropriate legislative framework limits the utilization of used cooking oils UCOs in AD with a consequently missed opportunity for biogas owners that could find an important alternative in UCO. View Full-Text

Keywords: anaerobic digestion AD; energy crops ECs; used cooking oils UCOs; land saving; waste management anaerobic digestion AD; energy crops ECs; used cooking oils UCOs; land saving; waste management





Author: Erika Carnevale, Giovanni Molari and Matteo Vittuari *

Source: http://mdpi.com/



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