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All Journal Jurnal Rekayasa Mesin SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi TEKIBA : Jurnal Teknologi dan Pengabdian Masyarakat Journal of Renewable Energy, Electrical, and Computer Engineering Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Kemitraan, Kewirausahaan dan Pengabdian Masyarakat
Muhammad Arief Saputro
Prodi Teknik Mesin Fakultas Teknik Universitas Janabadra
Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

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KAJIAN TEKNOLOGI GASIFIKASI BIOMASSA/SAMPAH UNTUK PRODUKSI SYNGAS DAN LISTRIK BERKELANJUTAN Muhammad Arief Saputro; Mochamad Syamsiro; Bayu Megaprastio; Feri Febriana Laksana
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 11 No. 2 (2023): Jurnal Al Ulum
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v11i2.461

Abstract

In this modern era, electrical energy is the most needed energy. Because a lot of equipment is powered by electricity. As a result, it must be balanced in relation to the availability of electrical energy. To provide enough electrical energy, a power plant is required. One of the promising technologies in the future is the downdraft gasification technology, where biomass can be used as a very abundant fuel in Indonesia. Rice husk, coconut fiber, coconut shell, palm oil waste, and urban waste are some of the biomass materials used. Based on the results of a literature review regarding the composition and calorific value of the syn-gas produced, the easiest biomass to gasify is a combination of palm fronds/palm fronds (OPF) and palm kernel shells (PKS) with a ratio of 20/80. With this composition ratio, it is possible to produce syn-gas with a composition of 21% CO, 3% CH4, and 17% H2 with a heating value of 5850 kJ/m3. It can be concluded that the type of biomass feedstock greatly influences the composition and calorific value of the syn-gas produced. Because each type of biomass produces different syn-gas characteristics.
Teknologi Pirolisis untuk Konversi Sampah Plastik menjadi Bahan Bakar Minyak : Kajian Literatur Bayu Megaprastio; Mochamad Syamsiro; Muhammad Arief Saputro; Fadmi Rina
Jurnal Rekayasa Mesin Vol 18, No 2 (2023): Volume 18, Nomor 2, Agustus 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i2.4443

Abstract

Pada zaman ini, penggunaan bahan bakar minyak minyak (BBM) merupakan kebutuhan energi yang tidak dapat diperbarui yang tidak sebanding dengan meningkatnya jumlah kendaraan sehingga pasokan volume BBM semakin menurun. Selain itu, masalah lingkungan berupa peningkatan jumlah sampah yang juga semakin tinggi dikarenakan proses penguraian yang memerlukan  khususnya pada sampah plastik. Oleh karenanya diperlukan cara mengatasi permasalahan tersebut dengan membuat bahan bakar minyak dengan mengekstrak energi yang terdapat pada sampah menggunakan termal. Pirolisis adalah proses dekomposisi secara kimia-termal pada keadaan tanpa oksigen yang terjadi didalam reaktor. Produk utama dari teknologi ini adalah MHP (Minyak Hasil Pirolisis). Minyak inilah yang diharapkan mampu mengatasi berkurangnya bahan bakar fosil dengan dilakukan pengujian performa MHP pada mesin secara langsung. Pengujian dilakukan dengan melihat kinerja yang dihasilkan dengan melakukan variasi campuran bahan bakar. Emisi gas buang juga dilakukan guna mendapatkan data dari efek penggunaan MHP sebagai campuran BBM. Hal ini ditujukan untuk mengetahui secara keseluruhan bagaimana potensi dari MHP agar nantinya bukannya menghasilkan energi terbarukan tetapi juga ramah lingkungan sehingga menghasilkan energi yang bersih dan berkualitas.
The Comparison of Water and Acid Leaching Methods to Reduce Ash and Inorganic Mineral Content in Teak Sawdust Biomass Saputro, Muhammad Arief; Syamsiro, Mochamad; Megaprastio, Bayu; Ahmad, Noesanto Dewantoro; Herlambang, Bagas
Retii 2025: Prosiding Seminar Nasional ReTII ke-20 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Biomass is the fourth largest renewable energy source in the world, accounting for approximately 10% of the total global primary energy supply. Every year, a large amount of teak wood sawdust is produced from the manufacturing of furniture, beds, wooden decorations, and various other products. This waste has no economic value and requires considerable storage space, causing problems in handling and disposal. Therefore, utilizing this forestry residue for biofuel production is a sustainable and economically beneficial approach. However, the main challenge in its utilization lies in its high ash and inorganic mineral content, which can reduce energy conversion efficiency and the calorific value of the product. This study aims to compare the effectiveness of washing methods using water and acid solutions in reducing ash content and increasing the calorific value of teak wood sawdust. The research was conducted experimentally in a laboratory, involving several stages: material preparation, washing treatment (water and acid), drying, ash content and calorific value analysis, and result evaluation. The treatments were carried out at mass ratios of 1:25, 1:50, and 1:75, washed for 2 hours using a magnetic stirrer, followed by filtration, rinsing to neutral pH, and drying at 105 °C for 6 hours. The results showed that washing with 1 M HCl consistently produced a greater mass reduction of teak wood sawdust compared to deionized water at all ratios, indicating that the acid method is more effective in reducing the inorganic content of biomass.
PENGENALAN TEKNOLOGI PENGELOLAAN SAMPAH BERBASIS MASYARAKAT DI KELURAHAN WARUNGBOTO KEMANTREN UMBULHARJO KOTA YOGYAKARTA Syamsiro, Mochamad; Saputro, Muhammad Arief; Rhamadhani, Ardiyan
Kurvamas Vol 2 No 1 (2026): Jurnal Kemitraan, Kewirausahaan dan Pengabdian Masyarakat
Publisher : LPPMI Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvms.v2i1.6438

Abstract

Program pengabdian kepada masyarakat berupa sosialisasi pengenalan teknologi pengelolaan sampah telah dilaksanakan di Kelurahan Warungboto, Yogyakarta dengan tujuan memberikan pemahaman akan pengelolaan sampah mulai dari pengetahuan jenis-jenis sampah, manajemen pengelolaan, teknologi pemusnah sampah hingga upaya-upaya pengurangan sampah melalui 3R. Hasil sosialisasi menunjukkan bahwa para peserta sangat bersemangat dan antusias mengikuti acara ini. Selama kegiatan sosialisasi, terlihat ada beberapa peserta yang sudah cukup memahami beberapa jenis teknologi yang ada, sehingga diskusinya menjadi semakin berkembang dan akhirnya memunculkan gagasan-gagasan baru dalam pengelolaan sampah di Kelurahan Warungboto. Ada beberapa skema teknologi yang dapat diimplementasikan seperti insinerasi yang paling siap dibandingkan dengan yang lainnya. Teknologi yang lebih maju yaitu menggunakan proses gasifikasi dimana sampah diubah menjadi syngas (bahan bakar gas) yang nantinya digunakan pada mesin gas atau mesin diesel. Pada tahap evaluasi, dari hasil penilaian para peserta sebelum sosialisasi menunjukkan bahwa rentang nilai pekerjaan pre-test berada pada angka 80-100 (nilai maksimal 100). Kemudian dari hasil post-test diperoleh nilai pekerjaan pada rentang 90-100 yang artinya para peserta menjadi semakin paham dengan materi persampahan. Secara keseluruhan, rata-rata nilai post-test adalah 98,3 yang artinya mengalami kenaikan jika dibandingkan dengan nilai rata-rata pre-test sebesar 93,3.
Karakteristik Kadar Abu Serbuk Gergaji Kayu Jati Setelah Pencucian Berdasarkan Analisis Proksimat Muhammad Arief Saputro; Mochamad Syamsiro; Noesanto Dewantoro Ahmad; Bayu Megaprastio; Dimas Noor Ardianto
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 12 No 2 (2026): August
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/st.vol12.no2.a22533

Abstract

Teak sawdust biomass has potential as a solid fuel; however, its high ash and inorganic mineral contents adversely affect its fuel quality and thermal performance. Previous studies on biomass leaching generally evaluated process effectiveness solely based on mass loss after leaching, so the relationship between mass reduction and the actual decrease in ash content has not been fully verified. Therefore, this study emphasizes the verification of ash reduction through proximate analysis as a more representative indicator of biomass quality, while also evaluating its effect on improving calorific value. This study aimed to compare the effectiveness of leaching using deionized water and 1 M HCl in reducing ash content and increasing calorific value. The experiment was conducted using solid-to-liquid ratios of 1:25, 1:50, and 1:75, with 2 h of stirring, drying at 105 °C, followed by proximate and calorific value analyses. The results showed that leaching with 1 M HCl effectively reduced the ash content by 30%, from 2.013% in the raw biomass to 1.402%, whereas leaching with deionized water did not result in a significant reduction in ash content. In addition, the calorific value increased by 1.078 MJ/kg, from 17.629 MJ/kg in the raw biomass to 18.707 MJ/kg after leaching with 1 M HCl. Overall, 1 M HCl exhibited superior demineralization performance compared to deionized water. These findings indicate that acid leaching significantly improves fuel quality by reducing inorganic mineral content and increasing energy density.
The Effect of Temperature Variation and Absorber Type on the Pyrolysis of Sawdust Using Microwaves Muhammad Arief Saputro; Harwin Saptoadi; Robertus Dhimas Dhewangga Putra
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 5 No. 2 (2025): September 2025
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v5i2.19543

Abstract

Biomass is a renewable and environmentally friendly energy source. However, its utilization is often inefficient, such as in direct combustion and biological processes. Pyrolysis, a method of heating biomass without oxygen, can enhance the value of biomass by producing gas, oil, and char. Microwave technology makes the pyrolysis process more efficient. This study varied the pyrolysis temperatures (350°C, 400°C, 450°C, 500°C) and used KOH and SiC as varied absorbers. KOH was chosen because it contains O and H elements that help absorb microwaves, while SiC is effective in improving heating efficiency. The results showed that pyrolysis at 350°C produced the highest biochar yield of 59.3% of the biomass weight. The highest bio-oil yield, 27.7%, was obtained at 400°C.Pyrolysis without an absorber demonstrated that sawdust cannot absorb microwaves effectively, as the temperature only reached around 200°C, which is insufficient for pyrolysis. SiC increased the temperature of the sawdust (between 200°C - 330°C) earlier than KOH. However, KOH led to higher bio-oil production than SiC. The findings suggest that absorber type and pyrolysis temperature significantly influence the efficiency and product distribution. Microwave-assisted pyrolysis with absorbers offers a promising method for converting biomass into valuable energy products, highlighting its potential for further development.
Sosialisasi dan Layanan Servis Sepeda Motor Gratis di Kelurahan Warungboto, Kemantren Umbulharjo, Kota Yogyakarta Muhammad Arief Saputro; Joko Winarno; Sukamto; Mochamad Syamsiro; Ardiyan Rhamadhani; Riki Ferdiansyah; Sahat Yansen Parulian Sinamo
TEKIBA : Jurnal Teknologi dan Pengabdian Masyarakat Vol. 6 No. 1 (2026): TEKIBA : Jurnal Teknologi dan Pengabdian Masyarakat (Januari)
Publisher : Fakultas Teknik, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/tekiba.v6i1.6811

Abstract

This community service program is an annual activity organized by the Department of Mechanical Engineering, Faculty of Engineering, Janabadra University, focusing on the provision of free motorcycle maintenance services accompanied by public education regarding routine vehicle care for residents living in and around Kalurahan Warungboto. The program aims to enhance the safety and reliability of local residents’ daily transportation through preventive maintenance and increased user technical literacy. The implementation methods include: (1) on-site registration of motorcycles at the Kalurahan Warungboto office, (2) initial inspection using a standardized checklist, (3) basic servicing such as oil changes, air filter cleaning, etc, and (4) brief socialization sessions on maintenance schedules, early signs of malfunction, and safe riding behaviors. The free service is carried out by lecturers and Mechanical Engineering students in the yard of the Kalurahan Warungboto office, allowing residents to easily access the service location and obtain direct consultation on the condition of their motorcycles. While participants wait, the team delivers structured educational materials to support independent vehicle care at home. Expected outcomes include improved functional condition of participant vehicles, increased public understanding of preventive maintenance, and strengthened achievement of student learning outcomes in both technical skills and service-oriented soft skills. The program’s implications include strengthened campus–community networks in Kalurahan Warungboto and the potential replication of the service model in other regions with support from local stakeholders. The community service program is an annual activity organized by the Department of Mechanical Engineering, Faculty of Engineering, Janabadra University, focusing on the provision of free motorcycle maintenance services accompanied by public education regarding routine vehicle care. The program aims to enhance the safety and reliability of local residents’ daily transportation through preventive maintenance and increased user technical literacy.
Co-Authors Ardiyan Rhamadhani Bayu Megaprastio Dimas Noor Ardianto Fadmi Rina Harwin Saptoadi Herlambang, Bagas Joko Winarno Laksana, Feri Febria Mochamad Syamsiro Noesanto Dewantoro Ahmad Rhamadhani, Ardiyan Riki Ferdiansyah Robertus Dhimas Dhewangga Putra Sahat Yansen Parulian Sinamo Sukamto