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All Journal Reaktor Jurnal Teknik Kimia USU BERKALA SAINSTEK Jurnal Teknik Kimia Jurnal Teknologi Rekayasa Mesin Eksergi: Chemical Engineering Journal JURNAL INTEGRASI PROSES Konversi Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Indonesian Journal of Pure and Applied Chemistry Jurnal Purifikasi SENTIA 2016 Jurnal Penamas Adi Buana Industri Inovatif : Jurnal Teknik Industri Jurnal Inovasi Teknik Kimia Majamecha G-Tech : Jurnal Teknologi Terapan Jurnal Teknik Kimia USU IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Mestaka: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Kimia dan Lingkungan Journal Serambi Engineering (JSE) Jurnal Teknik Kimia
Elvianto Dwi Daryono
Institut Teknologi Nasional Malang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Karakterisasi Produk Metil Ester Hasil Reaksi Interesterifikasi RPO (Refined Palm Oil) dengan Katalis Kalium Hidroksida Elvianto Dwi Daryono
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The transesterification process in biodiesel production is less effective because there is a separation stage of the glycerol byproduct. The interesterification process is more effective because the triacetin byproduct does not need to be separated and functions as an antioxidant in biodiesel. Stirring speed and catalyst are very important factors for a reaction to occur. Stirring will increase the frequency factor of collisions between reacting particles while the catalyst at a certain amount will accelerate the reaction. The study aims to determine the effect of stirring speed and KOH catalyst concentration on the interesterification reaction of RPO (Refined Palm Oil). The weight of RPO is 250 g, the mole ratio of oil: methyl acetate is 1: 6, stirring speed (200 - 60 rpm), KOH catalyst (0.25 - 0.75%), reaction temperature is 60℃ and reaction time is 1 hour. RPO, methyl acetate and KOH are put into a three-neck flask and the reaction is according to the operating conditions. After the reaction is complete, washing with hot water and CH3COOH is added to neutralize the KOH catalyst. The reaction products are separated with a separating funnel and the resulting phase is washed with distilled water until the pH is neutral. After that, it was distilled and the residue was the result of the reaction which was then analyzed for concentration with GC and its physical properties. The optimum conditions were obtained in the RPO interesterification reaction at a stirring speed of 300 rpm with 0.75% KOH catalyst which produced FAME with a concentration of 33,818 mg/L and an acid value of 0.438 mg KOH/g according to SNI 7182:2015.
PENGARUH KONSENTRASI KATALIS DAN KECEPATAN PENGADUKAN PADA SINTESIS BIODIESEL MINYAK KELAPA SAWIT DENGAN KO-PELARUT METIL ESTER Daryono, Elvianto Dwi; Dewi, Rini Kartika; Anggorowati, Dwi Ana
Indonesian Journal of Pure and Applied Chemistry Vol. 9 No. 1 (2026)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v9i1.100312

Abstract

The transesterification process is hindered by the many processing steps required, and the results are often suboptimal. The interesterification process using a methyl ester co-solvent offers a solution to this issue. The methyl ester co-solvent accelerates the reaction and eliminates the need for a separation stage at the end of the process. This study aims to determine the effects of catalyst concentration and stirring speed on methyl ester yield in the interesterification of palm oil to biodiesel using a methyl ester co-solvent. A total of 250 g of oil was used, with an oil-to-methyl acetate molar ratio of 1:6. The reaction was carried out at 60 °C, using 15% co-solvent, a reaction time of 1 hour, KOH catalyst concentrations ranging from 0.25% to 1%, and stirring speeds between 600 and 1,000 rpm. The oil, methyl acetate, and catalyst were placed into a three-neck flask, and the reaction was conducted according to the specified operating conditions. Optimum conditions for palm oil interesterification were achieved with a KOH catalyst concentration of 0.5% and a stirring speed of 800 rpm, resulting in a crude yield of 93.1%, a methyl ester concentration of 43,654 mg/L, and an acid value of 0.42 mg KOH/g, meeting the requirements of SNI 7182:2015.
Minyak Atsiri dari Limbah Kulit Jeruk Lemon (Citrus Limon) sebagai Bahan Baku Biopestisida dengan Variasi Perbandingan Konsentrasi Bibit dan Jenis Tween Elvianto Dwi Daryono; Miraekel January Ekfar Princessa; Qori Kurrota Aini
Jurnal Serambi Engineering Vol. 11 No. 2 (2026): April 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Salah satu upaya yang dilakukan petani untuk menjaga kualitas dan kuantitas hasil panen adalah dengan menggunakan pestisida kimia untuk memberantas hama. Namun, seiring berjalannya waktu penggunaan pestisida kimia semakin berlebihan. Mengingat bahwa pestisida kimia merupakan polutan, penggunaannya dapat menyebabkan terbentuknya radikal bebas serta kerusakan organ pada manusia dan hewan yang bukan menjadi sasaran petani. Kurangnya pengetahuan masyarakat mengenai pestisida kimia dan pestisida organik menyebabkan hanya sedikit petani yang beralih menggunakan pestisida organik untuk mengendalikan hama. Oleh karena itu, penelitian ini bertujuan untuk mengetahui tingkat keberhasilan dan efektivitas minyak atsiri kulit lemon sebagai biopestisida serta memperoleh komposisi perbandingan bahan dalam pembuatan biopestisida yang dapat diaplikasikan oleh masyarakat. Penelitian ini menggunakan dua jenis variabel, yaitu variabel tetap (volume total benih, konsentrasi Tween, konsentrasi minyak atsiri, jumlah jangkrik, dan waktu pengamatan) serta variabel bebas (konsentrasi benih dan jenis Tween). Hasil penelitian menunjukkan bahwa kondisi optimum diperoleh pada variabel konsentrasi benih sebesar 20% dengan jenis Tween 80 karena menghasilkan persentase kematian jangkrik sebesar 87% serta dapat meminimalkan biaya produksi. Berdasarkan hasil tersebut dapat disimpulkan bahwa penggunaan senyawa limonena yang terdapat dalam minyak atsiri kulit lemon dengan perbandingan komposisi konsentrasi benih 20% dan Tween 80 sebagai biopestisida sangat efektif dan memiliki tingkat keberhasilan yang memuaskan.
IDENTIFIKASI KOMPONEN METIL ESTER HASIL REAKSI INTERESTERIFIKASI MINYAK JELANTAH DENGAN BIOKATALIS EKSTRAK DAUN SALAM Elvianto Dwi Daryono Daryono; Fitri Icha Oryza Sativa; Tia Ardya Wahyu Cahyani; Rizky Nartika Nurfitri; Eka Maretyaningsih Agung Purwanti; Ahmad Faizal Alfiniam
Jurnal Teknik Kimia Vol. 21 No. 01 (2026): JURNAL TEKNIK KIMIA
Publisher : Department of Chemical Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnaltekkim.v21i01.63

Abstract

Sintesa biodiesel terkendala dengan banyaknya tahapan proses yang harus dilakukan. Proses menjadi lebih efisien jika tahapan proses bisa dikurangi terutama pada tahap pemisahan produk samping dan katalis. Proses interesterifikasi minyak jelantah dengan biokatalis senyawa aromatic adalah solusi untuk mengatasi masalah tersebut. Ekstrak daun salam mengandung senyawa aromatic kuersetin yang berpotensi sebagai biokatalis pada pembuatan biodiesel tanpa pemisahan karena sebagai bioaditif. Penelitian bertujuan untuk mengetahui pengaruh waktu reaksi dan konsentrasi biokatalis ekstrak daun salam pada konsentrasi metil ester yang dihasilkan pada reaksi interesterifikasi minyak jelantah menjadi biodiesel. Berat minyak jelantah yang digunakan 250 g, rasio mol minyak:metil asetat = 1:6, suhu 60oC, stirring speed 300 rpm, konsentrasi biokatalis (1%, 2% dan 3%) dan waktu reaksi (15 – 75 menit). Minyak jelantah, metil asetat dan biokatalis dimasukkan dalam labu leher tiga dan reaksi sesuai dengan kondisi operasi. Kondisi optimum didapatkan pada proses interesterifikasi minyak jelantah dengan biokatalis ekstrak daun salam 1% pada waktu reaksi 30 menit dengan konsentrasi metil ester 4781,5635 ppm.
Sintesis dan Identifikasi Biodiesel dari Transesterifikasi Refined Palm Oil dengan Ko-pelarut Metil Ester Elvianto Dwi Daryono; Rini Kartika Dewi; Dwi Ana Anggorowati
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.349

Abstract

The transesterification of refined palm oil (RPO) with methyl ester (FAME) as a cosolvent was investigated to enhance solubility and mass transfer, thereby accelerating the reaction and improving biodiesel yield. This study aimed to evaluate the effects of FAME co-solvent concentration and reaction time on the transesterification process of RPO. The reaction was conducted using 250 g of RPO with a molar ratio of oil to methanol of 1:6, 0.8 wt% KOH catalyst, a stirring speed of 100 rpm, and a reaction temperature of 70°C. The co-solvent concentration was varied from 0% to 15%, while the reaction time ranged from 5 to 30 minutes. The reaction was carried out in a two-neck flask, followed by distillation to remove impurities. The resulting product was analyzed using gas chromatography and physical property tests. The optimum conditions were achieved at 5% FAME co-solvent concentration and a reaction time of 30 minutes, yielding a crude biodiesel yield of 99%, a FAME concentration of 999,265 mg/L, and a density of 0.88 g/mL, which meet the biodiesel quality standard SNI 7182:2015. The use of FAME as a co-solvent improves process efficiency by eliminating the need for a co-solvent separation step at the end of the reaction.
Characterization of Biodiesel Produced from the Transesterification of RPO (Refined Palm Oil) and Recycled Methanol Using an NaOH Catalyst Elvianto Dwi Daryono; Jimmy
BERKALA SAINSTEK Vol. 14 No. 1 (2026)
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v14i1.60003

Abstract

The transesterification reaction used in biodiesel production is reversible; thus, several approaches are required to achieve a high product yield. The use of excess methanol as a reactant is one method to shift the reaction equilibrium toward the product side. Unreacted methanol can be reused in subsequent transesterification reactions, helping to reduce material consumption. The objective of this study is to determine the optimum conditions for the transesterification reaction using recycled methanol and varying reaction times. The research consists of three stages: recycled methanol preparation, transesterification using recycled methanol, and product characterization. The preparation stage involves conducting a transesterification reaction of RPO to obtain recycled methanol. This is followed by the second stage, namely the transesterification reaction using recycled methanol. The transesterification of palm oil is carried out at a reaction temperature of 65 °C with an oil-to-methanol molar ratio of 1:6, 1% NaOH catalyst, stirring speed of 150 rpm, reaction times of 15, 30, 45, 60, and 75 minutes, and recycled methanol concentrations of 5%, 10%, and 15% of the fresh methanol feed mass. The reaction mixture is then neutralized and placed in a separation funnel. The upper layer, consisting of methyl ester, is subjected to characterization. The characterization includes density measurement, acid value determination, and methyl ester concentration analysis using GC. The optimum conditions are obtained in the transesterification of palm oil with the addition of 5% recycled methanol for 60 minutes, producing methyl ester with a density of 0.85 g/mL, an acid value of 0.42 mg KOH/g, and a concentration of 97.69%, meeting the SNI 7182:2015 standard. The results of this study are expected to provide useful information for future biodiesel research and for the biodiesel industry, indicating that the use of 5% recycled methanol can produce biodiesel that meets the required standards.
Co-Authors Adam Yonanda Adi Sintoyo Adrianus Chrisantus Rengga Ahmad Faizal Alfiniam Ahmad Faizal Alfiniam Ahmad Isnaini, Ahmad Dio Ajeng Oktavian Dwi Ana Anggorowati Dwi Ana Anggorowati Dzaky Aqillah Fikriansyah Eka Maretyaningsih Agung Purwanti Eka Maretyaningsih Agung Purwanti Endah Kusuma Rastini Erni Junita Sinaga Faidliyah Nilna Minah Febriara Fassa Aulia Rahman Firyaal Putri Verdina Fitri Icha Oryza Sativa Fitri Icha Oryza Sativa Gunawan, Rendi Chandra Hadryza Anduanda Zahra Hudha, Mohammad Hutasoit, Gading F Imaniar Safitri Jimmy Kartika, Rini Lalu Mustiadi Maya Sista, Eliya Miftachul Arif Pratama Miraekel January Ekfar Princessa Mohammad Istnaeny Hudha MUYASSAROH Muyassaroh Muyassaroh Muyassaroh Nanik Astuti Rahman Puji Prasetyo, Angga Pursitta, Anggriarida Titta Qori Kurrota Aini Rendi Chandra Gunawan Rini Kartika Rini Kartika Dewi Rizky Nartika Nurfitri Rizky Nartika Nurfitri Sintoyo, Adi Siswi Astuti SYAIFUL BAHRI Theresia Sufin Tia Ardya Wahyu Cahyani Tia Ardya Wahyu Cahyani Tri Poespowati Vina Nur Laily Zukhriyah Zukhriyah