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Biodiesel production by the methylic-alkaline and ethylic-enzymatic routes: Discussion of some environmental aspects

Author:
de Mello, Marcia, Young, André, Villardi, Hugo, Pessoa, Fernando, Salgado, Andrea
Source:
Journal of cleaner production 2017 v.144 pp. 347-357
ISSN:
0959-6526
Subject:
biodiesel, carboxylic ester hydrolases, catalysts, computer software, environmental impact, environmental performance, fuel production, green chemistry, industrial applications, sodium hydroxide, soybeans, transesterification
Abstract:
A comparative environmental impact analysis of the soybean biodiesel production by two different technologies is run in this study. The production routes evaluated were the alkali-catalyzed (catalyst: sodium hydroxide) methylic transesterification and enzyme-catalyzed (catalyst: lipase) ethylic transesterification. The study includes the simulation of the biodiesel production process with the software Aspen HYSYS, from AspenTech Inc., and a subsequent comparative analysis of the main environmental impacts observed in each case, based on the application of two approaches: analysis of the Principles of Green Chemistry and calculation of some sustainability metrics. Results indicated a better environmental performance for the enzymatic route, in almost all the analyzed issues, what proves that this route is an excellent option for future industrial applications, regarding safety and sustainability.
Agid:
5613618