Synthesis of Biodiesel from Refined Waste Cooking Oil with Active Natural Zeolite

  • Aman Santoso Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, 65145, Indonesia
  • Sumari Sumari Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, 65145, Indonesia
  • Muhammad Roy Asrori Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, 65145, Indonesia
  • Amonius Regino Wele Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, 65145, Indonesia
Keywords: Waste cooking oil, Activation, Natural Zeolite, Refinement, Transesterification

Abstract

 

This research evaluates refining waste cooking oil with active natural zeolite, utilizes it for biodiesel synthesis, and characterizes the synthesized methyl ester. This experimental laboratory research was carried out: (1) activation of natural zeolite, (2) refining waste cooking oil with active natural zeolite, (3) determination of free fatty acid (FFA) content of the oil, (4) transesterification with KOH catalyst, (5) characterization of the synthesized methyl esters according to the SNI 7182:2015, and (6) identification of the methyl ester component by GC-MS. The results showed that the FFA content of the refined waste cooking oil using active natural zeolite with concentrations of 10%, 20%, and 30% per mass of oil were 2.97, 2.0, and 1.56%, respectively. The yield of methyl ester transesterified with various concentrations of KOH (0.8, 1.0, and 2% per mass of oil), respectively, were 80.13, 85.34, and 74.98%. The synthesized methyl ester resulted in the characteristics: 0.867 g/mL of density; 5.72 cSt of viscosity; 1.449 of refractive index; 1.46 g KOH/g of acid number; and 0.023% of water content. Identification of GC-MS obtained the synthesized methyl esters, which include: 46.10% of methyl hexadecanoic, 41.68% of methyl 9-octadecanoic, 6.42% of methyl octadecanoic, and 5.80% of methyl eicosanoic.

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Published
2024-01-11
How to Cite
(1)
Santoso, A.; Sumari, S.; Asrori, M. R.; Wele, A. R. Synthesis of Biodiesel from Refined Waste Cooking Oil With Active Natural Zeolite. Indo. J. Chem. Res. 2024, 11, 174-180.
Issue
Vol 11 No 3 (2024): Edition for January 2024
Section
Research articles

Copyright (c) 2024 Aman Santoso, Sumari Sumari, Muhammad Roy Asrori, Amonius Regino Wele

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