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Biodiesel Production from Nyamplung (Calophyllum inophyllum) Oil using Ionic Liquid as A Catalyst and Microwave Heating System

1Department of Chemical Engineering, Semarang State University, Kampus Unnes Sekaran Gunungpati, Semarang 50229, Indonesia

2Department of Chemical Engineering, Diponegoro University, Jl. Prof. Soedarto, Kampus Undip Tembalang, Semarang 50239, Indonesia

Received: 21 Nov 2016; Revised: 7 Mar 2017; Accepted: 9 Mar 2017; Available online: 8 May 2017; Published: 1 Aug 2017.
Editor(s): Istadi Istadi, Yuly Kusumawati
Open Access Copyright (c) 2017 by Authors, Published by BCREC Group under

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Nyamplung (Calophyllum inophyllum) is a typical Indonesian plant. Its seed contains abundant inedible oil, and therefore it is potential for biodiesel feedstock. The current issues of biodiesel are longer  reaction time of oil to biodiesel through transesterification reaction and lower biodiesel yield due to ineffective use of a homogenous catalyst. This work was aimed to use an ionic liquid as a catalyst and equipped with microwave heating as the heating system in order to increase the biodiesel yield and accelerate the process. Effects of the catalyst concentration and power of microwave irradiation to the biodiesel yield were studied. The ionic liquid of 1-butyl-3-methylimidazolium hydrogen sulfate (BMIMHSO4) was used as a catalyst. The results showed that the highest biodiesel yield was achieved of 92.81% which was catalyzed by IL0.5NaOH0.5 (0.5 wt.% (BMIMHSO4) + 0.5 wt.% NaOH) with a methanol-to-oil molar ratio of 9, a reaction time of 6 minutes, and the microwave temperature was 60 °C. 

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Keywords: Biodiesel; ionic liquids; calophyllum inophyllum oil; microwave

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