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Kurnia Wijayanti
Fakultas Teknik, Universitas Setia Budi, Jl. Let. Jend. Sutoyo, Surakarta
Chemical Engineering, Chemistry & Bioengineering

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Kesetimbangan natrium di dalam campuran biodiesel gliserol Supriyono Supriyono; Kurnia Wijayanti
Jurnal Rekayasa Proses Vol 2 No 1 (2008): Volume 2, Nomor 1, 2008
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.547

Abstract

Transesterification is one of the processes for producing biodiesel. The process involves the use of liquid catalyst such as NaOH. However, the presence of Na+ ions in biodiesel accelerates the scale formation and aggravates the combustion engine performance. Therefore, the maximum concentration of Na+ is about 5 mg / kg biodiesel to minimize the effect. Recently, the focus study of transesterification using NaOH as a catalyst is achieving higher conversion. Meanwhile, the reduction process of Na+ remaining in the biodiesel has not yet been studied. The experiments were carried out in a three-neck flask equipped with a reflux condenser where jatropha oil was reacted with methanol. The amount of methanol was 3 times of the stoichiometric molar ratio, while NaOH was used as catalyst. The concentration of Na+ both in the glycerol and biodiesel phases were analyzed. Based on the excess Gibbs free energy, the maximum concentration of NaOH for transesterification of Jatropha oil was 0.0015% weight.
Co-Authors Supriyono Supriyono