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Zen, Muhammad Rizky
Teknik Sistem Energi, Institut Teknologi Sumatera, Lampung Selatan – Indonesia
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Other

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Evaluation of Pyrolysis Temperature and Time on The Quality Improvement of Calliandra Wood Charcoal Briquettes as An Alternative Energy Source Murda, Rio Ardiansyah; Pasaribu, Try Vista Ulina Br; Wahyuningrum, Maeda; Zen, Muhammad Rizky; Maulana, Sena; Rinaldi, Nino; Maulana, Muhammad Iqbal; Munawaroh, Khoryfatul; Lizardi, Fathi; Faedloni, Akbar Ash Shiddiqi
Molekul Vol 21 No 1 (2026)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2026.21.1.14411

Abstract

ABSTRACT. Calliandra (Calliandra calothyrsus) wood is a promising biomass feedstock due to its abundance and high calorific value. This study investigated the effects of pyrolysis temperature (400 °C and 500 °C) and residence time (30 and 60 minutes) on the quality of calliandra charcoal briquettes. Biomass was carbonised, mixed with 15% cassava starch binder, pressed, and oven dried. The briquettes were evaluated for yield, density, moisture, ash, volatile matter, fixed carbon, calorific value, combustion rate, and structural changes. Results showed that all parameters except yield were significantly influenced by temperature and time. FTIR analysis revealed increased aromatisation at higher pyrolysis conditions, while XRD indicated reduced cellulose crystallinity and the emergence of calcite and silica phases. The briquettes exhibited densities of 0.62–0.63 g/cm³, moisture contents of 2.14–2.73%, ash 3.55–4.91%, volatile matter 16.32–25.11%, fixed carbon 68.60–76.63%, calorific values 7,856–7,978 cal/g, and combustion rates 0.08–0.09 g/min. The condition of 400 °C for 30 minutes offered the most balanced performance, while 500 °C for 60 minutes yielded the highest carbonisation and energy content. These findings highlight that moderate pyrolysis conditions can produce efficient, high-quality briquettes with low energy input. Keywords: Biomass, calliandra wood, energy, pyrolysis, wood charcoal briquettes
Penguatan Pengetahuan Energi Terbarukan Dan Peran Teknik Sistem Energi: Kegiatan Pengabdian Di SMA Negeri 12 Bandar Lampung Ilham Dwi Arirohman; Khoirun Naimah; Muhammad Rizky Zen; Rihardian Maulana Wicaksono
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 6 : Juli (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

The low public awareness and understanding of renewable energy, particularly among younger generations, remains a challenge for accelerating the energy transition in Indonesia. This community service activity aimed to enhance the knowledge and awareness of students at SMA Negeri 12 Bandar Lampung regarding renewable energy, while introducing the Energy Systems Engineering Program at ITERA as part of the transition solution. The method included planning, interactive dissemination, and evaluation through pre- and post-tests. A total of 135 students participated in the activity, which utilized visual presentations and interactive quizzes (Quizziz). Evaluation results showed a significant increase in student understanding, with more than 93% showing improved post-test scores. These findings indicate that visual and interactive educational approaches are effective in improving energy literacy at the secondary education level. This activity also serves as a practical means of disseminating scientific knowledge from the Energy Systems Engineering field to the broader community.
Pemanfaatan Biogas Dari Limbah Kotoran Sapi Sebagai Alternatif LPG Di Desa Gantiwarno, Lampung Timur Rihardian Maulana Wicaksono; Muhammad Rizky Zen; Ilham Dwi Arirohman; Khoirun Naimah; Agung Dwi Saputra; Muhammad Ridho Hilman
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 5 : Juni (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Gantiwarno Village in Pekalongan, East Lampung, has significant biogas potential from cow dung. However, the utilization of cow dung is still not optimal, resulting in the surrounding environment being littered with cow dung. Furthermore, the availability of LPG is uncertain, causing its price to fluctuate. Therefore, ITERA Community Service team helped resolve this issue by installing a 4 m3 biogas reactor to convert cow dung into biogas. The stages of this Community Service activity began with a site survey, building relationships with partners, team preparation, construction of the biogas installation, monitoring and evaluation of activities, and the preparation of activity reports. The output of this community service activity was a biogas reactor unit and supporting components such as a biogas stove. Within 7-10 days, the biogas from the cow dung waste began to appear and was immediately used for household cooking needs. Visually, the flame in the biogas stove showed a blue color, indicating that the quality of biogas was not much different from the LPG gas used previously. This biogas reactor can be a renewable, environmentally friendly energy source, making it more energy independent. Furthermore, utilizing biogas can help reduce dependence on LPG, thus saving on weekly electricity needs.
Co-Authors Achmad Gus Fahmi Agung Dwi Saputra Agus Adi Putra Aji Suhartoyo Apriansyah Julio Arirohman, Ilham Dwi Arminda, Wenny Cahaya Prautama Chairunnisa Noviarini Chairunnisa Noviarini Devy Arysandi Faedloni, Akbar Ash Shiddiqi Fahmi Sapta Hadi Fano Alfian Ardyansyah Gaol, Javeni Eysama L. Hasbiyalloh, Hasbiyalloh Hotdimas Simanjuntak Kamaruddin, Maqbul Khoirun Naimah Khoryfatul Munawaroh Kiki Yuli Handayani Kusuma, Alfajar Puja Leily Nurul Komariah Lizardi, Fathi Madi, Madi Maulana, Muhammad Iqbal Maulana, Sena Michelle Maria Magdalena Napitupulu Michelle Maria Magdalena Napitupulu Muhammad Khanafi Muhammad Miftahur Rahman Muhammad Ridho Hilman Naimah, Khoirun Nino Rinaldi Pasaribu, Try Vista Ulina Br Purba, Leonardo D. Rafi, Risfihan Rahmatullah, Abri Rihardian Maulana Wicaksono Siti Muslimah Soelami, F.X. Nugroho Susila Arita Uswatun Mujahidah Wahyuningrum, Maeda Wicaksono, Rihardian Maulana Yunesti, Putty