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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Jurnal Riset Kimia Jurnal Litbang Industri Jurnal Ilmiah Biosaintropis (Bioscience-Tropic) Jurnal Ilmiah Pertanian Science and Technology Indonesia Unri Conference Series: Community Engagement Jurnal Teknik Kimia Indonesia International Journal of Community Service Jurnal Abdimas Bina Bangsa Journal of Bioprocess Chemical and Environmental Engineering Science Prosiding Konferensi Nasional PKM-CSR Jurnal Teknologi Kimia Unimal JUARA: JURNAL WAHANA ABDIMAS SEJAHTERA Leuser Journal of Environmental Studies JURNAL REKAYASA KIMIA & LINGKUNGAN Journal of Food Industrial Technology
Ida Zahrina
Universitas Riau
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Journal : Leuser Journal of Environmental Studies

 1 
Environmental Benefits of Palm Oil Biodiesel Enhancement: Urea Complexation Optimization via RSM Helwani, Zuchra; Amraini, Said Zul; Abd Rahman, Sunarti; Zahrina, Ida; Julhijah, Noni; Ulfaa, Suci Mas’ama
Leuser Journal of Environmental Studies Vol. 2 No. 2 (2024): October 2024
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v2i2.214

Abstract

Indonesian commercial biodiesel products are unstable due to polyunsaturated fatty acids (PUFA). The urea inclusion compound (UIC) method is used during the fractionation process on PUFA to enhance its quality. This study aims to determine the effect of temperature, fatty acid ester metal (FAME)/methanol ratio, and crystallization time on increasing the concentration of PUFA concentrates and to produce high-performance biodiesel products with an iodine indicator <30–40 g I2/100 g. According to the most recent research, the UCF phase product is obtained at a combination of temperature and crystallization time of 20 °C and 4 h, respectively. It has an iodine number of 44.01 and an oxidation stability of 18.61 h, which is close to the criteria for high-performance biodiesel (<30 –40 g I2/100 g). Meanwhile, the results of this study obtained a UCF phase product that has an iodine number of 34.18 and yields 86.57% is obtained at a combination of temperature and crystallization time of 20 °C and 6 hr and FAME-methanol ratio of 6, respectively, which is close to the criteria for high-performance biodiesel (<30 –40 g I2/100 g). The longer complexation time and temperature significantly affected the FAME fractionation of the UCF phase.
Improving the Environmental Performance of Palm Biodiesel via AgNO₃-Assisted Removal of Polyunsaturated Fatty Acids Helwani, Zuchra; Zahrina, Ida; Amraini, Said Zul; Idroes, Rinaldi; Neonufa, Godlief Frederick; Rahman, Sunarti Abd
Leuser Journal of Environmental Studies Vol. 3 No. 1 (2025): April 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v3i1.274

Abstract

Indonesian biodiesel products commonly exhibit low oxidative stability and high cloud points, which limit their performance and widespread use. These drawbacks are primarily due to the high content of polyunsaturated fatty acids (PUFAs) in the fatty acid methyl ester (FAME) mixture that constitutes biodiesel. A more suitable biodiesel composition includes higher proportions of saturated and monounsaturated fatty acids, which offer better combustion properties, higher cetane numbers, and greater resistance to oxidative degradation. In contrast, PUFAs promote oxidation reactions, resulting in fuel instability, increased sludge formation, and higher emissions of unburned hydrocarbons, negatively impacting both engine performance and the environment.This study investigates the use of silver nitrate (AgNO₃) as a selective extraction agent to remove PUFAs from palm oil-derived FAME. The goal is to identify the most effective biodiesel-to-AgNO₃ volume ratio for separating saturated fatty acid fractions from unsaturated ones, in order to produce a more stable and environmentally friendly biodiesel. Experimental results show that a 1:2 volume ratio significantly reduces the iodine number, from 57.22 to 47.38 g I₂/100 g sample, indicating a decrease in unsaturated compounds. Furthermore, oxidative stability improved from 11.18 hours to 11.69 hours after extraction. The removal of PUFAs not only improves the fuel's storage and combustion stability but also enhances its environmental profile. More stable biodiesel burns more completely, reducing emissions of particulate matter and greenhouse gases, and contributing to cleaner air and lower environmental impact. Thus, PUFA extraction using AgNO₃ presents a promising approach for improving the sustainability and performance of palm-based biodiesel fuels.
Co-Authors Abd Rahman, Sunarti Ady Maulana Afrilianti, Azyarah Ahmad Fadli Aisha, Farra Al'farisi, Cory Dian Alfajar, Fariz Alfarisi, Cory Dian Almasdi Syahza Aminuyati Arya Wiranata B Bahruddin Bagus Duhan Irfandy Bahruddin Bahruddin Bahruddin Bahruddin Bahruddin Ibrahim Bahrudin Bahrudin Chatarina Umbul Wahyuni Dewi, Yuli Piana Djaimi Bakce Drastinawati Drastinawati, Drastinawati Dyah Tasya Elvi Yenie Elvi Yenie Elvi Yenie, Elvi Eriyati Eriyati Eriyati Eriyati, Eriyati Evelyn Fadila, Rawdatul Fadillatul Nisa Fajril Akbar Firman Maulana Hafidawati, Hafidawati Hazzamy, Muhammad Asyaf Hendro Ekwarso Hutagaol, Nurhidayah Indra Yasri Irdoni Irdoni Irfandy, Bagus Duhan Islamy, Muhammad Agung Israyandi Israyandi Ivan Fadhillah Iwan Kurniawan Iwan Kurniawan Jahrizal Julhijah, Noni Khairat, Khairat Khobar Bahari Pane Komalasari Komalasari Komang, Hendri Laisa Husraini Lusiana Sri Wahyuni M Asyraf Hazzamy Mira Dharma Susilawaty Muhammad Agung Islamy Mulya, Dynna Ardilla Putri Musbar, Hafidawati Mutamima, Anisa Nadimisia, Tiara Dwisca Nanda, Widia Rizki Neonufa, Godlief Frederick Niken Triani Klaway Reza Nova Ramadhani Farnas Nurfatihayati Rahman, Sunarti Abd Randy Lesmana Putra Ricfan Anggriawan Rinaldi Idroes Rizki Agustina Rudi Setiawan Setairies, Vonny Setiaries, Vonny Silvia Reni Yenti Siti Rahmalia Sri Rezeki Muria SUNARNO Sunarno Sunarno Sunaryo Sunaryo Syamsu Herman Syarfi Daud Syarfi Syarfi Syoffinal Syoffinal Tengku Firly Musfar, Tengku Firly Teuku Azhari Hassan Trisuciati Syahwardini Ulfaa, Suci Mas’ama Utami, Anggia Afza Vonny Setiaries Johan Wiranata, Arya Yelmida Azis Yelmida Aziz Yulia, Indri Zuchra Helwani Zuchra Helwani, Zuchra