Multi-Feedstocks Biodiesel Production from Esterification of Calophyllum inophyllum Oil, Castor Oil, Palm Oil and Waste Cooking Oil

H Hadiyanto (Department of Chemical Engineering, Diponegoro University, Jl Prof. Soedharto, SH, Tembalang, Semarang 50275 School of Postgraduate Studies, Diponegoro University, Jl Imam Bardjo, SH, Semarang 50275 Center of Biomass and RenewableEnergy (C-BIORE), Di)
Apsari Puspita Aini (Department of Chemical Engineering, Diponegoro University, Jl Prof. Soedharto, SH, Tembalang, Semarang 50275 Center of Biomass and RenewableEnergy (C-BIORE), Diponegoro University, Jl Prof. Soedharto, SH, Tembalang, Semarang 50275)
Widayat Widayat (Department of Chemical Engineering, Diponegoro University, Jl Prof. Soedharto, SH, Tembalang, Semarang 50275)
Kusmiyati Kusmiyati (Faculty of Engineering, Dian Nuswantoro University, Semarang)
Arief Budiman (Department of Chemical Engineering, Gadjah MadaUniversity, Yogyakarta)
Achmad Roesyadi (Department of Chemical Engineering, Sepuluh November Institute of Technology, Surabaya)

International Journal of Renewable Energy Development
Vol 9, No 1 (2020): February 2020

Biodiesel can be produced from various vegetable oils and animal fat. Abundant sources of vegetable oil in Indonesia, such as Calophyllum inophyllum, Ricinus communis, palm oil, and waste cooking oil, were used as raw materials. Multi-feedstock biodiesel was used to increase the flexibility operation of biodiesel production. This study was conducted to determine the effect of a combination of vegetable oils on biodiesel characteristics. Degumming and two steps of esterification were applied for high free fatty acid feedstock before trans-esterification in combination with other vegetable oils. Potassium hydroxide was used as a homogenous catalyst and methanol as another raw material. The acid value of C. inophyllum decreased from 54 mg KOH/gr oil to 2.15 mg KOH/gr oil after two steps of esterification. Biodiesel yield from multi-feedstock was 87.926% with a methanol-to-oil molar ratio of 6:1, temperature of 60 ℃, and catalyst of 1%wt. ©2020. CBIORE-IJRED. All rights reserved