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All Journal JURNAL PENELITIAN SAINTIKA Bernas Jurnal Pendidikan Kimia (JPKim) Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agrium Best Journal (Biology Education, Sains and Technology) Jurnal Agro Estate ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) SOROT: Jurnal Pengabdian Kepada Masyarakat Jurnal Agro Fabrica IRA Jurnal Pengabdian Kepada Masyarakat
Pada Mulia Raja
Institut Teknologi Sawit Indonesia
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Inovasi Edukasi Lingkungan melalui Pemanfaatan Minyak Jelantah Menjadi Lilin di SD Desa Mabar Raja, Pada Mulia; Wahyuna, Ritna; Mahyunis, Mahyunis; Zakwan, Zakwan; Winardi, Rafael Remit Winardi; William, William
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i3.262

Abstract

Used cooking oil is a household waste that can pollute the environment if disposed of improperly. In Mabar Village, Bangun Purba District, public awareness of waste oil management remains low. This community service program aims to provide environmental education for elementary school students by introducing the utilization of used cooking oil to produce candles. The program involved 21 students from grades 4–5. The methods included socialization on the dangers of used oil, hands-on candle-making practice, and evaluation using pre- and post-tests. The results show a significant improvement in students’ understanding, rising from 20% on the pre-test to 85% on the post-test. Furthermore, all participants successfully produced candles independently. This program effectively enhances children’s knowledge and environmental awareness.
Analisis Kelayakan Tangki Timbun CPO Kapasitas 500 dan 1000 Ton Berdasarkan Ketebalan Roundshell, Suhu, dan Tekanan Hidrostatis Raja, Pada Mulia; Mahyunis, Mahyunis; Istiadzah, Tiara Briliani; Zakwan, Zakwan; Winardi, Rafeal Remit; Rahimah, Rahimah; Lubis, Zulyaden
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.v4i3.278

Abstract

This study aims to determine the feasibility of using 500-ton and 1000-ton Crude Palm Oil (CPO) storage tanks in a palm oil mill. The evaluation is based on the roundshell thickness, operating temperature, and hydrostatic pressure acting on the tanks. A descriptive quantitative method was applied using primary and secondary data from PMKS Simpang Gambir. The results showed that for the 500-ton tank, the calculated roundshell thickness is 8.6 mm, the actual is 8.87 mm, and the design is 9 mm, with a hydrostatic pressure of 5.73 Pa. For the 1000-ton tank, the calculated thickness is 13.1 mm, the actual thickness is 13.8 mm, and the design thickness is 14 mm, with a hydrostatic pressure of 11.46 Pa. The corrosion rates are 0.00072 mm/month and 0.0011 mm/month, respectively. Based on the analysis, the 500-ton tank is feasible for continued use for approximately 31 years, and the 1000-ton tank for 53 years, assuming constant corrosion rates.
Stabilitas Termal Material Cast Iron Dan Stainless Steel Pada Proses Penyangraian Terhadap Konsistensi Cita Rasa Kopi House Blend Subakti, Subakti; Raja, Pada Mulia; Lubis, Zulyaden
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.406

Abstract

This study examines the optimization of the physical and sensory characteristics of Arabica and Robusta house blends from Sidamanik by comparing the performance of stainless steel and cast-iron roasting drums. The novelty of this research lies in mapping the influence of material heat retention on roasting profiles and flavor development in specific blend formulations. Using a factorial Completely Randomized Design (CRD), the study tested four blend ratios (100:0, 75:25, 25:75, 0:100) and analyzed parameters including moisture content, defect values, roasting curves, and sensory evaluations via hedonic and cupping tests. The results indicate that cast iron possesses superior thermal stability, significantly accelerating the attainment of the first crack compared to stainless steel. Sensorially, a 100% Arabica formulation roasted in a cast-iron machine produced a superior profile dominated by fruity and sweet characteristics. Conversely, stainless steel was found to better balance flavor complexity in the 25% Arabica and 75% Robusta blend, yielding a harmonious profile of sweet, bitter, and salty notes. These findings underscore that the selection of roasting material must be aligned with the desired blend flavor profile. Consequently, cast iron is recommended for time efficiency and consistent physical quality, whereas stainless steel remains relevant for achieving flavor equilibrium in specific house-blend formulations.
Co-Authors Abu Yazid, Abu Adlyansyah Adlyansyah Adlyansyah, Adlyansyah Afriedy Syaputra Siburian Al-Khoir, Habib Anju Juliman Tamba Apriyanti, Siti Nur Aries Sukariawan Ashari, Reza Barus, Siholanna Busrizal Faisal Busrizal Faisal Busrizal Faizal Butar-Butar, Revaldo Calvin Arnico Lase Delyana R. Pulungan Diana Elfrida Marpaung Dina Arfianti Saragih Dovianda, Kevin Tegar Eka Bobby Febrianto, Eka Bobby Fachrizal Faisal Ab’dau Faisal Ab’dau Fazli, Hafiz Darma Giyanto Giyanto . Giyanto Giyanto Gulo, Iwan Sah Putran Gunawan Gunawan Hari Gunawan Hasibuan, Henry Budi Heni Pujiastuti Heri Purwanto Hondro, Rasyid HUTASUHUT, MHD FUAD MAHRUZ WIRA'I Ika Ucha Pradifta Rangkuti Ika Ucha Pradifta Rangkuti Istiadzah, Tiara Briliani Jenny Elisabeth Junaidi Junaidi Leonardi Siregar Lubis, M Fahmi Fatan Lubis, Zulyaden Maharani, Rhyna Mahyunis Malau, Febiola Angelia Manullang, Raymond Manurung, Emy Fadillah Marzuti Isra Mega Fatimah Rosana Mubarokah, Siti Muhammad Syukri Namudany, Rania Nurfajriani Nurfajriani Pulungan, Qias Nabirah Purjianto Putra, Pramono Dimas Dwi Rahimah Rahimah, Rahimah Rahmad Dian Rina Maharani Rina Maharany Ritna Wahyuni Rizki Riyan Nopri Rizki Riyan Nopri Roosmawati, Febriana SAUKANI, MHD AHYAR Setiawan , Rian Sinaga, Shiva Anggreini Sinuhaji, Yose Andrea Siregar , Ajis Paroji Siregar, Leonardi Siti Aisyah Situmeang, Pirmana Sri Wahyuna Saragih Subakti, Subakti Wahyu Abdilah Wahyu Rinaldi Wahyu Rinaldi Widjajanto, Adi William William Winardi, Rafael Remit Winardi, Rafael Remit Winardi Winardi, Rafeal Remit Zakwan Zakwan Zakwan, Zakwan Zulham Effendi