Waste cooking oil logistics and environmental assessment for biodiesel production in Cali

Abstract

The present article analyzes different strategies for collecting Waste Cooking Oil (WCO) to produce biodiesel in Santiago de Cali. The quantitative and qualitative analysis of the models found in the literature highlighted the main characteristics for developing a WCO collection model considering the local parameters. Initial results showed that there is not enough WCO to satisfy the demand. However, an improved scenario is proposed following a supply point's densification strategy. The improved scenario not only fulfills the plant's installed capacity but also achieved WCO collection cost of 695.5 COP per gallon. 304 gallons of biodiesel could be produced with the collected WCO achieving a potential reduction of 230.81 kg of CO 2 if this biodiesel is used to replace the same amount of diesel in the market, due to the difference between the CO 2 emissions factor of diesel [kg CO 2 /diesel gal] and biodiesel [kg CO 2 /biodiesel gal].