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All Journal Jurnal Informatika JMECS (Journal of Measurements, Electronics, Communications, and Systems) Jurnal Nasional Teknik Elektro dan Teknologi Informasi Engineering Science Letter eProceedings of Engineering Proceeding of Community Service and Engagement Journal of Innovation and Community Engagement
Suwandi Suwandi
Universitas Telkom
Arts Humanities Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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Journal : engineering science letter

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Simulation of Updraft and Downdraft Gasification Using Computational Fluid Dynamics (CFD) for Production of Hydrogen-Rich Syngas from Cow Manure Waste Amaliyah Rohsari Indah Utami; Anindya Nabila Salma; Daffa Rayhan Betha Muchtar; Neni Sintawardani; Suwandi
Engineering Science Letter Vol. 4 No. 03 (2025): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/IISTR.esl.001397

Abstract

Biomass gasification offers a promising route to low‑carbon hydrogen, yet the operating conditions and reactor configuration governing hydrogen-rich syngas remain insufficiently compared across practical regimes. This study aims to quantify the effects of gasifier type (updraft vs. downdraft), operating temperature, and superficial velocity on hydrogen production performance, with emphasis on the syngas H2/CO ratio. Computational fluid dynamics simulations were implemented to model devolatilization, oxidation, and reduction pathways under steady-state assumptions, while systematically varying temperature (680-800°C) and air superficial velocity (0.0025-4 m/s). Model validation against experimental reference data demonstrated good agreement, with relative errors ranging from 5.95% to 6.93%. The results indicate that a downdraft configuration operated at 680°C and 2 m/s maximizes the H2/CO ratio, achieving a value of 2.091, outperforming alternative settings in terms of hydrogen yield and energy efficiency, albeit with higher variability than the updraft configuration. Increasing air flow beyond this optimum diminishes the H2/CO ratio due to enhanced oxidation, whereas raising the temperature to 800°C generally reduces the average H2/CO across both configurations. These findings establish a practical operating window for hydrogen‑rich syngas from livestock waste and highlight the need for rigorous process control to manage variability in downdraft operation. The study provides evidence-based guidance for gasifier design and operation, aiming to achieve efficient and renewable hydrogen production.
Co-Authors Abdul Haffif Adisal Krisnatal Adli Destiawan Wicaksono Ahmad Qurthobi Alsya Pratiwi Amaliyah Rohsari Amaliyah Rohsari Indah Utami Amaliyah Roshari Indah Utami Anang Try Wiyana Andica Dian Isnaini Angistu Palamarta Anindya Nabila Salma Asep Suhendi Audi Riansyahputra Auliana Darmaningsih Ayu Lestari Bayu Priambodo Berna Wahyu Setiawan Casmika Saputra Chartika Fadilah Prasetiani Chintia Dara Anggraini Daffa Rayhan Betha Muchtar Danny Dimas Debriano Dendy Darma Putra Desan Roni Saputra Dudi Darmawan Edy Wibowo Egi Agustian Eiffel Fatimah Mardan Ekki Kurniawan Endang Rosdiana Endang Rosdiana Erida Asih Selilana Erni Dwi Sumaryatie Fatma Junita Fikri Rangga Halim Fiqih Maulana Hasbi Firda Nurmalida Fransiskus Xaverius Dwiyanto Meas Hadani Rabby Haifa Wahyu Handri Morteza Hartono Adi Bharata Hasna Nur Aini Fadhilah Heni Dwi Juniar Hertiana Bethaningtyas Dyah Kusumaningrum Hicary Hicary Hilda Hamdah Husniyyah Ihsan Maulidin Ihsan Nugraha Putra Mukhti Ilham Pratama Imam Abdul Mahmudi Imas Agustin Indra Chandra Indra Wahyudin Fathonah Isma Rekathakusuma Jaya Wikrama Jilva Novandarys Sugandi Kartika Mahardhika Dyah Puspitasari Linahtadiya Andiani Lisa Anjani Arta Mamat Rokhmat Maruli Tua Baja Sihotang Memoria Rosi Miranti Widyastuti Mochammad Reddy Tri Cahaya Muh. Al Furqan Syafiuddin Muh. Saladin Muh. Saladin Prawirasasra Muhamad Kholik Martadinata Efendi Muhamad Maulana Riswandha Muhamad Ramdlan Kirom Muhamad Saladin Prawirasasra Muhammad Luthfian Dhiya Urramdhan Muhammad Saladin Muhammad Saladin Prawirasa Muhammad Saladin Prawirasasra Muhammad Zahid Hibaturrahman Muhammad Zakaria Narulita Andriyani Natasha Salsabila Neni Sintawardani Neni Sintawardani Nia Norissa Nouval Abdullah Nurwulan F Nurwulan Fitriyanti Nushaibah Athifah Orienta Sebayang Putri Mayasari Anisah R. Biantoro Kusumo Setiawan Rachman Ikhwanto Randhy Novianto Prabowo Ratna Sampurna Raysa Nurpujawati Gunawan Reza Fauzi Reza Fauzi Iskandar Reza Naufal Rizqullah Riandi Oktovian Rifki Irawan Risda Monitawati Riva Silvia Nababan Rizkar Febrian Rizky Anggara Saladin Prawirasasra Shinta Rizqi Amalia Siti Nur’aini Azizah Suprayogi Suprayogi Tania Verasta Tedy Gumilar Theresia Deviyana Gunawan Tri Ayodha A Tri Ayodha Ajiwiguna Ulvariandani Ulvariandani Wahyu Rangga Pratama Yogathama Arif Kurniawan