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All Journal Sinergi Journal of Engineering and Technological Sciences KOVALEN: Jurnal Riset Kimia EMITTER International Journal of Engineering Technology IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) FLUIDA AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Tropical Plantation Journal Proceeding ISETH (International Summit on Science, Technology, and Humanity) International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Rusdianasari Rusdianasari
Department of Renewable Energy Engineering, Politeknik Negeri Sriwijaya, Palembang
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Use of Base Catalysts in Making Biodiesel from Waste Cooking Oil Syafitri, Dwi; Putri Arza, Tasya Dwi Putri Arza; Rusdianasari, Rusdianasari
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 1 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i1.611

Abstract

Biodiesel obtained from vegetable oils and animal fats, is a more environmentally friendly alternative to conventional fossil fuels. Biodiesel production through esterification and transesterification processes with an emphasis on the role of catalysts in increasing efficiency. The use of homogeneous and heterogeneous catalysts, as well as the advantages and disadvantages of each. Homogeneous catalysts, such as NaOH and KOH, are effective in increasing the reaction, but face challenges in product separation and soap formation that can reduce biodiesel yields. In contrast, heterogeneous catalysts such as CaO and zeolites offer advantages in terms of reuse and waste reduction, although with slightly lower efficiency. In addition, important factors such as catalyst concentration, alcohol to oil ratio, and reaction temperature are also reviewed to maximize biodiesel yields. Optimal catalyst concentration is essential to increase conversion efficiency, as inappropriate concentrations can slow down the reaction. The importance of choosing the right catalyst and process conditions in producing biodiesel efficiently, while considering the environmental impact of using raw materials, especially palm oilContribution to Sustainable Development Goals (SDGs):SDG 6: Clean Water and SanitationSDG 11: Sustainable Cities and CommunitiesSDG 13: Climate ActionSDG 15: Life on Land
Production of Biodiesel from Sunflower Oil using Base Catalysts Kinia Eldwita; Vivi Octhaviana; Rusdianasari
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 1 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i1.643

Abstract

The reduction of petroleum reserves is a severe problem faced by many countries. With the help of the rapid development of science and technology, vegetable oil can not only be consumed but can also be processed into something that has more value, one of which is biodiesel. Biodiesel is a clean renewable fuel and can be used as the best substitute for diesel fuel. The purpose of this study is to provide a comprehensive overview of the development of research related to the production of biodiesel from sunflower oil using base catalysts. This research was conducted using the transesterification reaction method with the help of catalysts. Then the biodiesel yield from sunflower oil can be influenced by several factors, including the amount of catalyst, reaction temperature, reaction time, stirring speed, and molar ratio between methanol and oil. Based on the research, several tests were carried out. The first test was based on the influence of stirring speed, the results showed that the faster the stirring, the more biodiesel yield. The second test was based on the effect of reaction time; the results indicated that the reaction time could not significantly increase the biodiesel yield. The third test was based on the effect of the molar ratio of methanol and oil, the results showed that the optimum ratio could help drive the transesterification reaction towards the product. The fourth test looked at how the concentration of KOH solution affects the amount of biodiesel produced; the results showed that using the best amount of catalyst can make the transesterification reaction work better. The fifth test was based on the effect of reaction temperature; the results showed that at high temperatures (60°C) methanol mixes more easily with oil so that the biodiesel formation reaction takes place faster. From the results of this study, it can be concluded that sunflower oil can be used as one of the ingredients in making biodiesel.Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Sintesis Biodiesel dari Limbah Biji Alpukat melalui Proses Esterifikasi dan Transesterifikasi Budiastuti, Herawati; Rahmawati, Aisyah Auliya; Susanto, Susy Mardiana; Trirahayu, Dhyna Analyes; Rusdianasari, Rusdianasari
Fluida Vol. 16 No. sp1 (2023): FLUIDA x IRWNS Special Edition
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16isp1.5342

Abstract

The avocado seed is a food waste that contains vegetable oil. The amount of avocado seed waste is very abundant, but there is no optimal processing or utilization. Fossil fuels as an energy source can experience scarcity because these energy sources are non-renewable. This research has important implications in waste management and development of renewable energy sources. One type of renewable energy is biodiesel. Biodiesel is an environmentally friendly alternative fuel made from vegetable oil. The use of biodiesel as an alternative fuel has advantages including being easier to decompose in nature and reducing emissions when compared to diesel oil. One type of plant that can be used as raw material for making biodiesel is avocado. This study aims to utilize avocado seed waste as a raw material for biodiesel synthesis and to test its characteristics that have not been found in previous studies in the form of analysis of acid value, density, and oxidation stability. The method used in the synthesis of biodiesel was esterification and transesterification reactions using methanol solvent with a mole ratio of avocado seeds to methanol of 1:6 and the addition of H2SO4 catalyst as much as 0.5% of the weight of oil for the esterification process and the addition of NaOH catalyst as much as 1% of the weight of oil for the transesterification process. This study complements previous research on biodiesel from avocado seeds and compares the obtained biodiesel characteristics to the Indonesian National Standard (SNI) 04-7182:2015. The final results of this study were 34,61%, 0.98 mg-KOH/g, 977 kg/m3, and 318 minutes for biodiesel yield, acid value, density, and oxidation stability, respectively.
Condenser Design on Plastic Oil Distillation Equipment Novarini, N; Kurniawan, Sigit; Rusdianasari, R; Bow, Yohandri; Rifa'i, Ahmad Imam
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2020: Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (943.92 KB) | DOI: 10.23917/iseth.1285

Abstract

The pyrolysis method is a technology in energy conversion that can be applied in processing plastic waste into alternative fuels in liquid form. The pyrolysis method begins with heating the plastic waste in the reactor at a temperature of more than 400°C so that the thermal degradation process of the material occurs without oxygen content, causing a phase change to the vapor phase. The vapor phase is cooled into the condenser to convert it into a liquid phase to obtain liquid fuel from plastic waste. In this study, the pyrolysis condenser design in changing the vapor phase from the reactor to the liquid phase was designed using water as a coolant on the annular side with a coolant inlet temperature of 25 ° C and a coolant outlet temperature of 35°C. The results showed that an annular side dimension with a diameter of 250 mm and a height of 250 mm was needed to reduce the temperature of the inlet condenser fuel vapor from 60°C to 30°C. Furthermore, the inner pipe of the condenser is made of copper material, which is formed by a spiral with a spiral diameter of 250 mm, an inner diameter of 25 mm, and a tubing length of 4,870 mm.
Antibacterial Activity and Preliminary Phytochemical Screening of Forest Chili Leaf (Piper caninum Bl.) Ethanol Extract against Staphylococcus epidermidis Shanzet, Flavia Fionessa Falenda; Darmayasa, Ida Bagus Gede; Suriani, Ni Luh; Wiadnyani, Anak Agung Istri Sri; Ho, Ting Seng; Rusdianasari, Rusdianasari; Mariani, Mariani
Tropical Plantation Journal Vol 3, No 1 (2024): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v3i1.34

Abstract

Forest chili leaves (Piper caninum Bl.) has a potential to become an alternative to conventional antibiotics. This study aims to determine the Minimum Inhibitory Concentration (MIC) of forest chili leaf extract, assess the Lethal Concentration (LC50), and analyze the phytochemical composition of the extract. This study also conducted a Completely Randomized Design (CRD) with four repetitions. The agar well diffusion method is used in this study with various concentrations such as T1 ethanol 96% (negative control), T2 (5% concentration), T3 (10% concentration), T4 (15% concentration), T5 (20% concentration), T6 (25% concentration), and T7 Ciprofloxacin 1% (positive control). Data were subjected to ANOVA at a significance level of 5% and further analyzed using Duncan's test. The results showed that all concentrations of forest chili leaf extract (P. caninum Bl.) exerted a statistically significant effect (P 0.05) against Staphylococcus epidermidis bacteria. The research found that the most effective concentration to inhibits S. epidermidis is at 25%, which generates an inhibitory zone of 25.38 ± 0.52 mm. The estimated MIC value for forest chili leaf extract against S. epidermidis was found to be 0.2%, producing an inhibitory zone of 6.38 ± 0.32 mm. Additionally, the calculated LC50 value was 0.26%. Phytochemical screening revealed the presence of various bioactive compound groups in the forest chili leaf extract, including alkaloids, flavonoids, phenols, tannins, and steroids.
The Potential of Rice Husk Biopellets as a Substitute Fuel Rusdianasari, Rusdianasari; Kalsum, Leila; Hasan, Abu; Syaritri, Dwi; Arza, Tasya Dwi Putri; Octhaviana, Vivi; Nor, Siti Najdah Binti Mohd; Jamil, Maizun Binti; Risdzuan, Aiman Arif Bin
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i3.844

Abstract

One of Indonesia's greatest waste crops, rice husk, has not yet been fully exploited. Rice husk has a high lignocellulose content, increasing its potential as a renewable energy source, particularly in the form of biopellets. The procedure of creating biopellets is the focus of this study. biopellets made from rice husk and evaluate their quality using proximal, ultimate, value, density, and heat criteria. The study's stages include drying the raw material, milling it to a uniform size, using a pellet mill for pelletisation, and testing the biopellets for quality in compliance with SNI 8951:2020. The study's findings revealed that rice husk biopellets have sufficient calories and low water content after undergoing optimal drying. However, the high relative ash content is the main problem in using it as a feedstock for co-firing, necessitating quality enhancement through chemical treatment or blending with other biomass. Overall, biopellets derived from rice husks have the potential to serve as an environmentally acceptable and cost-effective alternative energy source for household and industrial use. Contribution to Sustainable Development Goals (SDGs): SDG 11: Sustainable Cities and Communities SDG 13: Climate ActionSDG 15: Life on Land
Co-Authors ABDUL ROHMAN Abdul Rohman Abu Hasan Agustin, Delliana Ahmad Fudholi Ahmad Taqwa Aida Syarif AIDA SYARIF Amalia, Kania Yusriani Amanah, Tria Rizki Anak Agung Istri Sri Wiadnyani Arissetyadhi, Iwan Arza, Tasya Dwi Putri Bambang, Muhammad Refo Bow, Yohandi Dewi, Tresna Faroja, Anas Fatahul Arifin, Fatahul Firdiansyah Herawati Budiastuti Hilwatullisan Ho, Ting Seng Husaini, A Ida Bagus Gede Darmayasa Idha Silviyati Indah Purnamasari Indrayani Jaksen M.A Jamil, Maizun Binti Kalsum, Leila Kania Pusriani Amalia Kinia Eldwita Leila Kalsum Mariani Mariani Muhammad Yerizam Mujiyanti, Apri Nainggolan, Hetty S Nasyta, Nabila Putri Ni Luh Suriani Nor, Siti Najdah Binti Mohd Novarini, N Octhaviana, Vivi Paramitha, Tifa Pola Risma Putra, Asri Eka Putri Arza, Tasya Dwi Putri Arza Rachmawati, Anissa Nurul Rahmawati, Aisyah Auliya RD Kusumanto Rifa'i, Ahmad Imam Risdzuan, Aiman Arif Bin Rizka Amalia Robert Junaidi Ronaldo Sakuraba, Takahiro Saputra, Yureski Belly Sardewi, Tri Sari, Desti Erwita Sari, Febby Fitria Shanzet, Flavia Fionessa Falenda Sigit Kurniawan Siswanto Susanto, Susy Mardiana Suyadi, M. Ilham Andri Syafitri, Dwi Syahrian, Nur Mutiara Syakdani, Adi Syaritri, Dwi Taqwa, Ahamad Tresna Dewi Trirahayu, Dhyna Analyes Vivi Octhaviana Yohandri Bow Yordan Hasan Yunsari, Sandhy Yurni Oktarina Zaman, Muhammad Zhafarina, Imas Ning