Sintesis Biodiesel Menggunakan Katalis Heterogen CaO Batu Kapur dengan Support Fly Ash Pabrik Kelapa Sawit Teraktivasi Termal

Authors

  • Rita Youfa Teknik Kimia Bahan Nabati, Politeknik ATI Padang
  • Elda Pelita Analisis Kimia, Politeknik ATI Padang
  • Dyah Nirmala Teknik Kimia Bahan Nabati, Politeknik ATI Padang
  • Desniorita Desniorita Teknologi Rekayasa Bioproses Energi Terbarukan, Politeknik ATI Padang
  • Regna Tri Jayanti Teknologi Rekayasa Bioproses Energi Terbarukan, Politeknik ATI Padang
  • Anang Baharuddin Sahaq Teknologi Rekayasa Bioproses Energi Terbarukan, Politeknik ATI Padang
  • Resi Levi Permadani Teknologi Rekayasa Bioproses Energi Terbarukan, Politeknik ATI Padang

DOI:

https://doi.org/10.32493/jitk.v10i1.49286

Keywords:

Biodiesel, CaO, Catalyst, Fly ash, RBDPO

Abstract

This study aims to produce biodiesel from Refined Bleached Deodorized Palm Oil (RBDPO) using a heterogeneous catalyst based on calcium oxide (CaO) derived from limestone andmodified with palm oil mill fly ash (FA) as a catalyst support. The limestone feedstock was first activated to obtain the CaO catalyst. Subsequently, the FA material was activated through calcination at 500°C. The CaO-FA catalyst was synthesized using the wet impregnation method and then calcined at 600°C. This catalyst was applied in the transesterification of RBDPO with methanol at various molar ratios. The study investigated the effect of different CaO-FA catalyst compositions (1:1, 2:1, and 3:1), and methanol:RBDPO molar ratios (8:1, 10:1, and 12:1) on biodiesel yield. The results demonstrated that both the CaO-FA catalyst ratios and the methanol:RBDPO molar ratios significantly influenced the biodiesel yield and the resulting Fatty Acid Methyl Ester (FAME) composition. Gas Chromatography-Mass Spectrometry (GC-MS) analysis revealed that the 3:1 CaO-FA composition with an 8:1 methanol:RBDPO molar ratio produced biodiesel with the highest methyl palmitate (C17H34O2) content of 88.99%, which meets the characteristics of high-quality biodiesel. These findings provide valuable insights into the development of CaO-FA-based heterogeneous catalysts for cost-effective and environmentally friendly biodiesel production, in line with government initiatives to promote renewable energy utilization.

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Published

2026-01-12

How to Cite

Youfa, R., Pelita, E., Nirmala, D., Desniorita, D., Jayanti, R. T., Sahaq, A. B., & Permadani, R. L. (2026). Sintesis Biodiesel Menggunakan Katalis Heterogen CaO Batu Kapur dengan Support Fly Ash Pabrik Kelapa Sawit Teraktivasi Termal. Jurnal Ilmiah Teknik Kimia, 10(1), 25–33. https://doi.org/10.32493/jitk.v10i1.49286

Issue

Vol. 10 No. 1 (2026): JURNAL ILMIAH TEKNIK KIMIA

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Articles

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Copyright (c) 2026 Rita Youfa, Elda Pelita, Dyah Nirmala, Desniorita Desniorita, Regna Tri Jayanti, Anang Baharuddin Sahaq, Resi Levi Permadani

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