Dufour, Javier; Iribarren, Diego - In: Renewable Energy 38 (2012) 1, pp. 155-162
production from free fatty acid-rich wastes, therefore providing a life cycle assessment of four biodiesel production systems … including esterification–transesterification of waste vegetable oils (used cooking oil) and animal fats (beef tallow, poultry … fat), and in situ transesterification of sewage sludges. Reference inventory data for these systems were gathered from a …