Efficient Biodiesel Production from Kitchen Waste Oil Using Homogeneous Catalyst
11 Pages Posted: 20 Apr 2018
Date Written: April 2018
The production and use of biodiesel has seen a quantum jump in the recent past due to benefits associated with its ability to mitigate greenhouse gas (GHG). There are large number of commercial plants producing biodiesel by transesterification of vegetable oils and fats based on base catalyzed (caustic) homogeneous transesterification of oils. Waste kitchen oil (WKO), which contain large amounts of free fatty acids produced in restaurants, are collected by the environmental protection agency in the main cities of China and should be disposed in a suitable way. Biodiesel production from WKO was studied in this paper through experimental investigation of reaction conditions such as methanol/ oil molar ratio, alkaline catalyst amount, reaction time and reaction temperature which are deemed to have main impact on reaction conversion efficiency. Experiments have been performed to determine the optimum conditions for this transesterification process by orthogonal analysis of parameters. Verified experiments showed methanol/oil molar ratio 6:1 was more suitable in the process, and under that condition WKO conversion efficiency led to 89.8% and the physical and chemical properties of biodiesel sample satisfied the requirement of relevant international standards.
Keywords: biodiesel, waste kitchen oil
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