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All Journal Jurnal Energi dan Lingkungan (Enerlink) Jurnal Teknik Terapan (J-TETA) JURNAL REKAYASA KIMIA & LINGKUNGAN
Heriyanti, Septina Is
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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OPTIMASI PROSES PRODUKSI BIODIESEL DARI MINYAK KELAPA SAWIT DAN JARAK PAGAR DENGAN MENGGUNAKAN KATALIS HETEROGEN KALSIUM OKSIDA Murti, Galuh Wirama; Rahmawati, Nurdiah; Heriyanti, Septina Is; Hastuti, Zulaicha Dwi
Jurnal Energi dan Lingkungan (Enerlink) Vol 11, No 2 (2015)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (969.231 KB) | DOI: 10.29122/elk.v11i2.1582

Abstract

Production of biodiesel has been conducted through several processes such as esterification andtransesterification by homogeneous catalyst in which use either acidic or alkaline substances.Homogeneous catalysts have some negative impacts to the environment, because technically itrequires further treatment process such as washing. Therefore, the use of heterogeneouscatalysts is proposed to be best way to overcome this problem. The advantages of heterogeneouscatalysts are not only for its ease in recovery but also for its reusability. Moreover, it isenvironmentally friendly and cheap which only undergo a single process of transesterification.Calcium oxide is well-known as one of heterogeneous catalysts. It were activated by pretreatmentwith methanol and then it was continued by transesterification reaction. The optimal reactiono conditions were obtained at temperature 60 C, atmospheric pressure, and 4 h reaction time.Calcium oxides shows good activity in transesterification reaction using either palm or jatropha oil.The highest conversion of palm oil is approximately 62,51% within catalyst 3% by weight oil,whereas jatropha oil is approximately 53.10 % within catalyst 10% by weight oil. The regeneratedcatalyst shows low catalytic activity which is indicated by small presence of methyl ester in theproduct.Key words : biodiesel, heterogen catalyst, calcium oxide, palm oil, jatropha oil
Strategi Optimasi Media Cair dalam Perbanyakan Kultur Kapang Dekomposer Tandan Kosong Kelapa Sawit untuk Efisiensi Produksi Biogas Ali, Badrut Tamam Ibnu; Pati, Senda Semuel; Baruji, Teguh; Yanti, Fusia Mirda; Heriyanti, Septina Is; Machiya, Intan; Santoso, Eko; Priambodo, Trisaksono Bagus; Budiyanto, Budiyanto; Purnamastuti, Fithri Nur; Nilasari, Nilasari; Primeia, Sandia; Valentino, Novio
Jurnal Teknik Terapan Vol. 3 No. 2 (2024): Oktober
Publisher : P3M Politeknik Negeri Jember

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Abstract

Tandan Kosong Kelapa Sawit (TKKS) merupakan limbah padat yang memiliki massa 21% dari total massa minyak sawit. TKKS umumnya hanya menjadi limbah atau selanjutnya digunakan sebagai pupuk organik di perkebunan kelapa sawit. produksi Dalam pengelolaan limbah organik seperti tandan kosong kelapa sawit, penggunaan kapang dekomposer menjadi semakin penting untuk mempercepat proses dekomposisi bahan organik. Dalam konteks ini, media teknis cair dapat menjadi solusi efektif untuk perbanyakan kapang dekomposer. Salah satu formulasi yang populer melibatkan penggunaan molase sebagai sumber Karbon dan Urea sebagai sumber Nitrogen, dengan penyesuaian osmoregulator menggunakan larutan garam NaCl 0,85%. Perlakuan awal TKKS dengan pendekatan proses biologi melalui dekomposisi tandan kosong kelapa sawit menggunakan isolat kapang lokal untuk menghasilkan substrat yang memiliki nilai COD tinggi. Tujuan penelitian ini adalah melakukan optimasi media cair perbanyakan kultur kapang dekomposer tandan kosong kelapa sawit untuk produksi biogas. Media cair yang digunakan berupa molase, urea dan NaCl 0.85 %. Pada penelitian ini, didapatkan substrat dengan nilai kandungan COD tertinggi sebesar 27.095 ppm dengan perbandingan media cair molase sebesar 7.5 %, urea 3000 ppm, dan garam teknis 0.85 %.
Synthesis of Renewable Diesel from Pure Plant Oil of Kapuk (Ceiba pentandra) Seed Using NiMo/-Al2O3 Catalysts Permana, Edwin; Wasistha, Excel Emerlan Samiar; Heriyanti, Septina Is; Murti, Sri Djangkung Sumbogo; Marlinda, Lenny; Tarigan, Indra Lasmana
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 1 (2022): Jurnal Rekayasa Kimia & Lingkungan (June, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v17i1.21673

Abstract

Ceiba pentandra (Kapok) is a tropical plant belonging to the Malvales that contain palm oil. Naturally, Pure Plant Oil (PPO) can be used as a renewable energy source that is a promising energy alternative instead of fossil. Somehow, one of the effects of the quality of Pure Plant Oil (PPO) is the presence of unsaturated bonds and the presence of oxygen. The most appropriate method to overcome these problems is hydrodeoxygenation using a batch system autoclave reactor. In the present work, we synthesized of Green Diesel using hydrodeoxygenation and NiMo/-Al2O3 catalyst to saturate double bonds and remove oxygen. The yield of pure plant oil was 42.77-74.72% while the yield of green diesel at pressure conditions of 30 and 50 bar and at temperatures of 300, 350 and 400C produced 76.73 94.06%. Then, the best condition for the hydrodeoxygenation reaction for the biggest yield is at a pressure of 50 bar at 350C. The results of the characterization of gas products using GC-TCD showed the composition of gases H2, O2, CO, CH4, and CO2. Whereas for green diesel liquid products, pure plant oil, and kapok seed oil were analyzed using GC-MS obtained hydrocarbon compounds with interval C10-C20. Quality analysis of kapok seed oil, pure plant oil, and green diesel has been in accordance with quality standards except for FFA and viscosity.
Co-Authors Ali, Badrut Tamam Ibnu baruji, teguh Budiyanto Budiyanto Edwin Permana Eko Santoso Hastuti, Zulaicha Dwi Indra Lasmana Tarigan Lenny Marlinda Machiya, Intan Murti, Galuh Wirama Murti, Sri Djangkung Sumbogo Nilasari, Nilasari Pati, Senda Semuel Priambodo, Trisaksono Bagus Primeia, Sandia Purnamastuti, Fithri Nur Rahmawati, Nurdiah Valentino, Novio Wasistha, Excel Emerlan Samiar Yanti, Fusia Mirda