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All Journal Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN AJIE (Asian Journal of Innovation and Entrepreneurship) Journal of Energy, Mechanical, Material and Manufacturing Engineering STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Mechanical Engineering for Society and Industry JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Journal of Earth Energy Science, Engineering, and Technology
Imam Sholahuddin
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

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Comprehensive analysis of tar reduction method in biomass gasification for clean energy production: A Review Prasetiyo, Dani Hari Tunggal; Sanata, Andi; Sholahuddin, Imam; Nashrullah, Muhammad Dimyati; Nanlohy, Hendry Y.; Panithasan, Mebin Samuel
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12712

Abstract

Biomass gasification is a promising renewable energy technology for the production of synthetic gas (syngas), consisting of hydrogen (H₂), carbon monoxide (CO), and methane (CH₄). This technology's primary challenge is tar formation – a heavy hydrocarbon compound that can block equipment, poison catalysts, and deteriorate syngas quality. Therefore, this study aimed to examine different tar reduction methods to support clean energy production through biomass gasification. To achieve this aim, two main approaches were adopted and the first was in-situ, focusing on modifying gasifier design and adjusting operational parameters. The second was ex-situ, which included catalytic reforming, thermal cracking, and plasma technology. The analysis also assessed different catalysts, such as biochar, and dolomite, as well as nickel- and iron-based materials, comparing their efficiency, sustainability, and economic viability. Several key factors influenced tar formation and reduction, namely feedstock type, operating temperature, air ratio, and reactor configuration. The result showed that combining in-situ and ex-situ technologies had substantial potential to significantly reduce tar, improve syngas quality, and optimize system performance. However, some challenges observed were reduced catalyst efficiency, high energy costs, and the need for more sustainable technologies. To improve the performance of gasification systems, this study provided information on catalyst development, operational parameter optimization, and plasma technology integration. Finally, the analysis provided a scientific basis and strategic recommendations to overcome tar problems and encourage the commercial use of biomass gasification towards a clean energy transition.
Pengaruh Laju Alir Udara Terhadap Produktifitas Syngas Gasifikasi Biomassa Kulit Kopi Wiyono, Pandu Akbar Iqrofasya Wiyono; Stujanjono, Hary; Sidartawan, Robertus; Listiyadi, Digdo; Rozy, M. Fahrur; Sanata, Andi; Sholahuddin, Imam; Nashrullah, M. Dimyati
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 01 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i01.147

Abstract

Indonesia's natural resources, such as coffee hulls in Jember Regency, are potential sources of biomass raw materials that can be processed into biomass energy. Gasification is the process of converting solid fuels into combustible gases (CO, CH4, H2) through a heating process with minimal air conditions. This research focuses on the effect of air flow rate on the syngas productivity of coffee husk biomass gasification. It was found that higher air flow rate produces higher syngas content. The highest syngas composition with the highest LHV value was obtained by the 40 SCFH air flow rate variation with an LHV value of 141.7 kJ/mol.
Pengaruh Penambahan Uap Etanol melalui Filter Udara terhadap Kinerja Mesin Diesel Menggunakan Bahan Bakar Premixed Dani, Dani Hari Tunggal Prasetiyo; Imam Sholahuddin; Haidzar Nurdiansyah; Hari Arbiantara Basuki; Dedi Dwilaksana; Linda Kurnia Supratiningsih
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 02 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i02.191

Abstract

The increasing need for energy and dwindling natural reserves encourage the search for alternative energy sources. One alternative energy source is biodiesel. Biodiesel can be produced from used cooking oil through the esterification and transesterification processes. However, biodiesel sourced from plant materials has disadvantages, one of which is its low calorific value. Most studies discuss the addition of chemical additives to increase the calorific value of biodiesel. However, the addition of ethanol vapor as an air additive to increase the calorific value of biodiesel is rarely discussed. This study was conducted experimentally, the study examined the effect of adding ethanol vapor to a diesel engine through an air filter. The diesel fuel used was dexlite type diesel fuel added with biodiesel from used cooking oil as much as 10% to 30%. Testing used additional ethanol vapor channeled through an air filter with a heating temperature of 90oC to 100oC. The results of the study were in the form of crankshaft rotation, effective power, and fuel consumption. The results showed that fuel with the addition of ethanol vapor produced the highest crankshaft rotation, effective power, and fuel consumption when compared to without the addition of ethanol vapor in all variations of the given fuel composition. The highest value of crankshaft rotation, effective power is in the B0 composition with values ​​of 32.53 rev/s and 2.74 kW, respectively. While the lowest fuel consumption is in the B70 composition with the addition of ethanol vapor of 105.7 seconds.
Sosialisasi dan Pelatihan Pemanfaatan Limbah Kulit Kopi sebagai Sumber Energi Alternatif bagi Gabungan Kelompok Tani di Kecamatan Silo, Kabupaten Jember: Socialization and Training on Utilizing Coffee Husk Waste as an Alternative Energy Source for Farmer Groups in Silo Subdistrict, Jember District Nashrullah, Muhammad Dimyati; Sanata, Andi; Sholahuddin, Imam; Sugara, Imam Rudi; Prasetyo, Dani Hari Tunggal
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 8 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i8.9097

Abstract

The Silo subdistrict is one of the coffee-producing villages, with a production amounting to more than 40% of the total coffee production in Jember Regency. The coffee processing produces coffee husk waste, which is often discarded into the environment and potentially causes pollution. Coffee husk waste has a high calorific value and is suitable for use as biomass fuel to produce syngas through gasification methods. The partner for this community service is GAPOKTAN Suka Maju, located in Pace Village, Silo Subdistrict, Jember Regency. GAPOKTAN Suka Maju is led by Mr. Zainal Arifin, who has 30 members. This community service aims to provide knowledge to GAPOKTAN Suka Maju members about the environmental impact of coffee husk waste disposal and the utilization of coffee husk waste as an energy source through gasification methods. The community service method consists of pre-activities, activity implementation, and evaluation. The pre-activities include designing the gasification equipment, making the gasification equipment, and drying the coffee husk waste. The implementation consists of socializing the environmental impact of coffee husk waste disposal, the energy potential of coffee husk waste, and training in gasification equipment. The results show a significant increase in the participants' understanding of the environmental impact of coffee husk waste disposal, the energy potential of coffee husk waste, and the gasification method and equipment to convert coffee husk waste into fuel.
Experimental Investigation of the Effect of Temperature on Biodiesel Production from Used Cooking Oil Prasetiyo, Dani Hari Tunggal; Ilminnafik, Nasrul; Sanata, Andi; Sholahuddin, Imam; Arbiantara, Hari; Dwilaksana, Dedi
Journal of Earth Energy Science, Engineering, and Technology Vol. 9 No. 1 (2026): JEESET VOL. 9 NO. 1 2026
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/2am28c76

Abstract

Used cooking oil is a waste product with great potential as a raw material for biodiesel production through transesterification. This study was conducted to determine the effect of transesterification reaction temperature on biodiesel yield and quality. The biodiesel production process includes a degumming step to remove gums by adding 1% H₃PO₄. This is then followed by transesterification using 1% NaOH as the catalyst, an oil-to-methanol ratio of 1:0.5, a stirring speed of 300 rpm, and a reaction time of 60 minutes. The transesterification reaction temperatures were 40°C, 50°C, 60°C, and 70°C. The results showed that the reaction temperature significantly affected the yield and physical quality of biodiesel. The highest yield was 85.85% at 40°C, while the lowest was 80.37% at 70°C. The maximum viscosity was observed at 60°C (6.0 cSt), and the minimum at 70°C (5.71 cSt). The highest density was 0.8620 g/mL at 50 °C, and the lowest was 0.8607 g/mL at 40 °C. The highest flash point was 40°C at 173.27°C, and the lowest was 70°C at 164.97°C. The results showed that the biodiesel produced met the quality standards of SNI 7182:2015, thus supporting its suitability as an alternative fuel derived from used cooking oil.
Co-Authors Agung Budi C Agung Budi Cahyono Agus Triono Andi Kurniawan Andi Sanata Ardian Dwi Saputra Arief Ginanjar Dirgantara Aris Zainul Muttaqin Ariyo Anindito Clarissa Putri Sholeha Dani Hari Tunggal Prasetiyo Dedi Dwi Laksana Dedi Dwilaksana Digdo Listyadi, Digdo Dimas Ilham Rasyid Dwi Djumhariyanto Gilang Firmansyah, Gilang Haidzar Nurdiansyah Hari Arbiantara Basuki Hari Arbiantara, Hari Harry Sutjahjono Havid Arifian Rochman Hendry Y. Nanlohy Ilminafik, Nasrul Imam Rudi Sugara Kristianta, FX. KW, Robertoes Koekoeh Linda Kurnia Supratiningsih Listiyadi, Digdo M. Fahrur Rozy H M. Fahrur Rozy Hentihu m. Fahrur Rozy R Mahros Darsin Masfeya Eka Hermiansyah Muhammad Dimyati Nashrullah Muhammad Trifiananto Nashrullah, M. Dimyati Nasrul Ilminnafik Novi Nur H Novi Nur Hamimah Panithasan, Mebin Samuel Ridho Unggul Nur Rahmadi Robertus Sidartawan Rozy, M. Fahrur Salahuddin j Salahuddin Junus Salahudin Junus Santoso Mulyadi Stujanjono, Hary Sumarji Taka, Ario Kristian Ummi Sholikhah Wiyono, Pandu Akbar Iqrofasya Wiyono Yanuar Alditya Nugraha