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All Journal TEKNIK KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Rekayasa Mesin Journal of Mechanical Engineering Science and Technology JST ( Jurnal Sains Terapan ) JTT (Jurnal Teknologi Terpadu) Turbo : Jurnal Program Studi Teknik Mesin INOVTEK POLBENG JRST (Jurnal Riset Sains dan Teknologi) IJOCE (International Journal of Offshore and Coastal Engineering) Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Kelautan Nasional Wave: Jurnal Ilmiah Teknologi Maritim Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Jurnal Abdi Insani International Journal of Marine Engineering Innovation and Research International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Riset Teknologi Pencegahan Pencemaran Industri Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan JMES The International Journal of Mechanical Engineering and Sciences Maritime Park: Journal Of Maritime Technology and Socienty International Journal of Metacentre PIKAT AMMA : Jurnal Pengabdian Masyarakat Jurnal Riset & Teknologi Terapan Kemaritiman Indonesian Journal of Maritime Technology or abbreviated (ISMATECH) Media Elektrik WAVE: Jurnal Ilmiah Teknologi Maritim
Suardi Suardi
Department Of Naval Architecture, Kalimantan Institute Of Technology, Balikpapan
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Social Sciences Transportation Other

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Effect of Methanol–NaOH Catalyst Variations on the Properties and Engine Performance of B50 Biodiesel from Waste Cooking Oil Suardi Suardi; Hariyono Hariyono; Faisal Mahmuddin; M. Rusydi Alwi; Muhammad Uswah Pawara; Alamsyah Alamsyah; Wira Setiawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.79-89

Abstract

The growing demand for environmentally friendly fuels has encouraged the use of biodiesel as an alternative to fossil diesel. This study explores the production of B50 biodiesel derived from waste cooking oil using the transesterification method, with two catalyst variations: (1) 1000 mL methanol + 25 g NaOH and (2) 1200 mL methanol + 30 g NaOH per 5 liters of feedstock. The research aimed to evaluate the effects of catalyst concentration on the physical properties of biodiesel (density, viscosity, and calorific value), as well as its impact on engine performance metrics, including torque, specific fuel consumption (SFC), thermal efficiency, and exhaust gas opacity. Experimental testing was conducted using a four-stroke diesel engine at varying loads and speeds. Results showed that both fuel blends met the Indonesian standards for density, while only the 1200 mL + 30 g NaOH blend met the standard for viscosity. The biodiesel prepared using 1000 mL methanol and 25 g NaOH demonstrated superior engine performance, with a maximum torque of 8.92 Nm, minimum SFC (406.90 g/kWh), and highest thermal efficiency (21.28%) at 1000 RPM and 4000 W load. Additionally, the biodiesel prepared using 1200 mL methanol and 30 g NaOH produced lower exhaust opacity. In conclusion, while increased catalyst dosage improves fuel cleanliness and compliance with standards, the lower catalyst yields the best balance of performance metrics, making it a promising for biodiesel application in diesel engines.
Pembuatan Dan Pemanfaatan Alat Bantu Berjalan Untuk Lansia Di RT 92 Kelurahan Manggar Gad Gunawan; Chaerul Qalbi AM; Devy Setiorini Sa’adiyah; Suardi; Rijal Surya Rahmany; Achmad Fahrizul Hasmi; Dhio Stofani; Dimas Rizqi Fahrezi; Febrillian Bima Jagad Saksana; Muhammad Syaiful Umara; Ricko Orientius Paseru
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 3 : April (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

As an institution equipped with resources and experts in the field of technology, universities hold significant potential to develop and provide innovative solutions to the challenges faced by the elderly. Therefore, this activity aims to design and implement a specialized walking aid tailored specifically for older adults. This assistive device will be developed with careful consideration of the unique needs and limitations commonly experienced by the elderly. The introduction of such a device is expected to promote greater independence and active engagement among elderly individuals in their daily lives. Ultimately, it is anticipated that this will enhance their overall quality of life and generate positive social impacts across the broader community in Kalimantan. Furthermore, this activity emphasizes the importance of collaborative efforts among universities, local governments, healthcare institutions, and the community in supporting and effectively implementing this initiative. The project will begin with consultations involving neighborhood leaders (RT) and local residents. Upon reaching a consensus, the next stages will involve socialization, the design and development process, and the eventual delivery of a prototype that meets the identified needs.
Co-Authors Abdillah, Riza Abdul Basiq Zainal Abidin Abdurrahman, Luthfi Abidin, Abdul Basiq Zainal Abiyyu Harly Saputra Achmad Fahrizul Hasmi Adhy Rahmat Adila, Imam Rifqi Ahmad Razzan Aknul Ciptiandi Aknul Ciptiandi Alamsyah Alamsyah Alamsyah - Alamsyah Alamsyah Alamsyah Alamsyah alamsyah alamsyah Alamsyah Alamsyah Alamsyah, Alamsyah Alamsyah, Alamsyah Alfawan Alfawan Alfawan Alwi, Muhammad Rusdy Amalia Ika Wulandari Amalia Ika Wulandari Amalia Ika Wulandari Amalia Ika Wulandari Amalia Ika Wulandari amalia ika wulandari Amalia Ika Wulandari Andi Mursid Nugraha Arifuddin Andi Mursid Nugraha Arifuddin Andi Nadia Himaya Anggela, Anggela Anggit Dwi Putra Anugerah, Andi Nurwahid Ardhi Hidayatullah Ardhi Hidayatullah Arifuddin, Andi Mursid Nugraha Astin, Widya Yulia Aulia, Ade Putri Rezki Aung Ye Kyaw Aung Ye Kyaw Aung Ye Kyaw Ayu Nastiti, Yulia Bancin, Sutomo Baratau, Irentya Anugra Basri Said Baya, Nur Berlian Arswendo Adietya Budhi Santoso Burliyanto, Decky Cahyani, Alviana Eka Chaerul Qalbi AM Chris Jeremy Verian Sitorus Desinta Larasati Ashar Devy Setiorini Sa’adiyah Dhio Stofani Dimas Putra Wahid Rusparyansyah Dimas Putra Wahid Rusparyansyah Dimas Rizqi Fahrezi Dwiyanti, Diva Syahirah Elfin Zulmi Azhar Erifive, Pranata Erskine Simei Tonda Fabila, Nova Fachrul Jaya, Muhammad Reza Fahmi Zahrotama Faisal Mahmuddin Faisal Mahmuddin Faisal Mahmuddin Fajar, Achmad Febrillian Bima Jagad Saksana Feston Sandi Paribang Fiesta Olivia Firman Bagja Juangsa Firmansyah, Mohammad Bagus Fitri, Ade Gad Gunawan Gom Gom Mulia Yehezkiel Tambunan Guskarim Rompon Habibi Habibi Habibi Hafiz, Muhammad Alimul Handayani, Windah Hariyono Hariyono Hariyono, Hariyono Haryawan, Hafiz Hendry Hermayanti, Nabila Ayu Hidayat, Taufik Hijriah Hijriah Hijriah Hijriah, Hijriah Hijriah, Hijriah Ikhwani, Rodlian Jamal Imawan Santosa, Pramudya Irmandana, Arwis Irvan Setiawan Ismail, Hariyono Jamal Jamal Juanda Jumalia, Jumalia Jumardi Jumardi, Jumardi Klara, Syerly Kustiwansa, Harlian Kyaw, Aung Ye Lionita Agusty, Cindy Lista Putri Adinda Rahmi Lumbantoruan, Hendra Eliakim Lumenteri, Fido Fortunatus M. Rusydi Alwi M. Uswah Pawara Mahmuddin, Faisal Mambang Rezalut T Mamola, Randi Maulana, Mohammad Khafid Moch Purwanto Mochammad Purwanto mubarak, azhar aras Muhammad Reza Fachrul Jaya Muhammad Rusdy Alwi Muhammad Syaiful Umara Muhammad Yusuf Ismail Muhdar Tasrief Myistro, Evan Naufal, Daffa Ahmad Naval Architecture, Diva Nugraha Arifuddin, Andi Mursid Nugraha, Andi Mursid Paribang, Feston Sandi Pradityana, Atria Prahmana, Rico Aditia Pranatal, Erifiive Pratama, Brian Yoga Pratama, Raditya Hendra Prihasto, Bima Raditya, Muhammad Yogi Raditya, Muhammad Yogi Rajagukguk, Pernando Anju Ramadana, Andi Najwa Ramadhani, Rizky Rara Gusnia Nurulhaini Ratna Septati Yani Ricko Orientius Paseru Rifai, Muhammad Rijal Surya Rahmany Rio Hermawan Risaldo, Rizky Rizky Risaldo Rodlian Jamal Ikhwani Rodlian Jamal Ikhwani Rodlian Jamal Ikhwani Ryanda Bayu Laksana S.Pd. M Kes I Ketut Sudiana . Samsu Dlukha N Samsu Dlukha Nurcholik Sarani Nigrat Nai Pos-Pos Setiawan, Wira Setiawan, Wira Sherina Fitri Hariani Sherly Clara Siagian, Firman Veryvicasi Vernando Simanjuntak, Lowry Gabriel Simatupang, Gusrawati, Sander V S Siswahyudianto Sitanggang, Syahrul Gunawan Suanggana, Doddy Sultan Mahmud Cakasana Syadzali, Abdul Mujib Syahab, Husein Syerly Klara Syerly Klara Tasrief, Muhdar Tasrief, Muhdar Taufik Hidayat Taufik Hidayat Wahidah, Jusma Wardina Suwedy Wati, Gusra Widya Yulia Astin Wijaya, Vibra Wira Setiawan Wira Setiawan Wira Setiawan Wira Setiawan Wira Setiawan Wira Setiawan wulandari, amalia ika Wulandari, Amalia Ika Wulandari, Amalia Ika Yosefan, Andreyano Zaed Yuliadi, Mochamad Zulkarnaen, Zen