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All Journal Jurnal Ilmu Lingkungan Journal of Engineering and Technological Sciences REKAYASA IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology Science and Technology Indonesia AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Al-Kimia IJEMS (Indonesian Journal of Environmental Management and Sustainability) IKRA-ITH ABDIMAS Journal of Humanities and Social Studies Jurnal Teknik Kimia Science Midwifery Journal of Applied Materials and Technology Jurnal Pengabdian Masyarakat Farmasi : Pharmacare Society Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Bulletin of Chemical Reaction Engineering & Catalysis
Fitri Hadiah
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary

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Journal : Science and Technology Indonesia

 1 
Kinetics of Homogeneous Reaction of Potassium Methoxide Based on K2CO3 Catalyst in Transesterification of RBDPO to Biodiesel Salam, Yosirham Abdu; Komariah, Leily Nurul; Hadiah, Fitri; Arita, Susila
Science and Technology Indonesia Vol. 9 No. 1 (2024): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.1.28-35

Abstract

Biodiesel production is generally catalyzed by potassium methylate or sodium methylate catalysts based on KOH and NaOH and these catalysts are still imported. The search for a cheap and effective catalyst continues to be carried out by researchers. One of the catalyst support materials currently in use involves impregnating K2CO3 with various substances, resulting in a heterogeneous catalyst. In this study, it was tried to use K2CO3 dissolved in methanol to produce a homogeneous potassium methylate catalyst. Potassium methylate-based homogeneous catalyst K2CO3-methanol is proven to have a very high function in the transesterification reaction of Refined Bleached Deodorized Palm Oil (RBDPO) into biodiesel, this is evidenced by the use of a catalyst percentage of 2% w and 30% w methanol to the weight of RBDPO resulting in an acid content in biodiesel of only 0.12% and a total glycerol of 0.124% in reaction time 3 hours, with the purity of the methyl ester in biodiesel reaching 98.80%. Meanwhile, for the calculation of homogeneous reaction kinetics, a reaction rate equation is produced where the order of the RBDPO transesterification reaction is order 2 (two) and the reaction rate constant is 0.0044.
Valorization of Palm Empty Fruit Bunch-Derived K₂CO₃ Catalyst: Structural Analysis and Application in Biodiesel Production Arita, Susila; Fitriyanti, Reno; Komariah, Leily Nurul; Hadiah, Fitri
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.420-435

Abstract

This study investigates the synthesis and performance of a K2CO3 catalyst derived from oil palm empty fruit bunch (EFB) ash for sustainable biodiesel production. X-ray Diffraction (XRD) revealed a dominant K2CO3 crystalline phase, while X-ray Fluorescence (XRF) confirmed a high potassium content (>40%). Despite its low surface area (0.11 m2/g), the catalyst demonstrated high transesterification activity, achieving an optimal biodiesel yield of 85.89% with 3 grams of catalyst. Its high thermal stability, strong base sites, and macroporous structure all contributed to enhanced catalytic efficiency. Sustainability and techno-economic assessments indicate the catalyst’s potential to reduce production costs, utilize biomass waste, and lower greenhouse gas emissions. Thus, the EFB ash-based K2CO3 catalyst shows significant promise for supporting environmentally friendly biodiesel production and contributing to the transition to a green economy and renewable energy.
Co-Authors Afrah, B. Dawami Agung Dwi Aryansyah Ahmad Julianto Al Azhar Al Muttaqii, Muhammad Alisya, Rona Anugrah, Muhammad Risky Aryani, Mentari Dian Aryansyah, Agung Dwi Asri, Wan Ryan Azhari, M. Thohir Azhari, Muhamad Thohir Bazlina Dawami Afrah Cundari, Lia Dwi Anggraini Dwi Budi Santoso Eddy Ibrahim Erisna, Desi Fahma Riyanti Fitri, Rizza Fadillah Fitriyani, Della Fitriyanti, Reno Gayatri, Rianyza Hasanudin Hasanudin Heryanto Heryanto Ilmiaty, R. Silvia Julianto, Ahmad Leily Nurul Komariah Maryana, Roni Muhammad Rico Ghozali Muhammad Rifqi Muhammad Said Nakashima, Mhika Nino Rinaldi Novi Anggraini Novia Novia Novia Sumardi Novia Sumardi Pratiwi, Siti Istiani Putri, Tiara Maharani Ramona R. M. Yusuf Agustria Rahmadian, M. Rafly Rahman, Susila Arita Rahmawati, Rahmawati Riady, M Ihsan Riady, M.I. Rika Damayanti Salam, Yosirham Abdu Salsabilla A Yani Saputri, Jasmine Fadhilah Delli Shailendra, F. Habib Shailendra, Faris Habib Shean, Rizqi Akbar Sinaga, Andi Parluhutan Siti Istiani Pratiwi Susila Arita Tanjung, Anggi Anggreini Tine Aprianti Tirtasakti Nugroho Tri Meliasari Tuti Emilia Agustina Tuti Indah Sari Tuti Indah Sari, Tuti Indah Tuty E. Agustina Tuty Emilia Agustina Wijaya, Ali Satria Yadi Utama Yani, Septi Nanda Yuniarti, Hafizhah