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Journal : Engineering Science Letter

Simulation of Updraft and Downdraft Gasification Using Computational Fluid Dynamics (CFD) for Production of Hydrogen-Rich Syngas from Cow Manure Waste Utami, Amaliyah Rohsari Indah; Salma, Anindya Nabila; Muchtar, Daffa Rayhan Betha; Sintawardani, Neni; 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 , Arsi Abu Umayah Adinugroho, Wisnu Affandhie, R. Buyung Anugraha Afifi Nudita Agus Santoso Agus Tohawi Ahmad Zainuri Aisyiah Dwi Puspitasari Ajeng Setyorini Akbar, Yuma Alan Suryatna Alfi, Nurfauzan Alfia Labadjo Ali Mahsun Ali, Indi Aulia Alisia, Selvi Amaliyah Rohsari Indah Utami Ambarwati Amelia Mega Maharani Aminul Fajri Amirudin Amri, Muliyani Andes Saputri Andi Desfiandi ANDRI KURNIAWAN Andung, Radity Anggriawan, Teddy Prima Ani Anindya Nabila Salma Ansari, Yanti Anugrah Sapto Hadi Aprilia Dwi Aisyah Ardhiansyah, Septian Syahnam Aribowo, Pinkan Claudia Arin Arintowati , Dyan Ariyansyah, Riyan Arofah, Farikhatul Arsi, Arsi Arumia Fairuz Husna Asep Kosasih Asep Kurniawan Asphina R. Djano, Nur Asriningrum, Surdiyah Aulia Alfarizi Avicenna, Muhadjir Ayu Lestari Badi’atun Nadhiroh Baihaqi Fanani Bambang Budi Wiyono Bambang Gunawan Bambang Gunawan Basundari, Ananda Putri Indira Batubara, Yusnani Berwantoro, Ramdan Betty Magdalena, Betty Bina, Rasyidin Budiarti, Erika Mei Budiastuti, Endah Chairun Nisa Chandra Irsan Chandra Irsan Cholifah, Anik Nur Cicin Yuningsih Dadang Iskandar Mulyana` Daffa Rayhan Betha Muchtar Damayanti, Oktarina Dangkeng, Ariyanto Dede Suhendar Desi Eri Kusumaningrum Desilia Purnama Dewi Desthiani, Unik Destiar Fachrurozy Dewi Indriasih Dewi Noviyanti Didi Andrianus Manalu Dien Noviany Rahmatika Diva Roisa Khoirotunnisa Dwi Astuti Dwi Puji Rahayu Dwi Dwi Puji Rahayu, Dwi Puji Dyah Aprillya Pratiwi Dzakia, Salma Fauza Eka Altiarika Eko Wahyudi Eman Sulaiman Eman Sulaiman, Eman Endah Gustami Enjelina Dewita Sari Erika Mei Budiarti Erni Putri Setia Zendrato Eva Gustia Eva Sri Fadila Ratna Amalia Faradila, Afrida Fifin Fariza, Muthia Fatih, Muhammad Al Fatimah , Nurul Fatma Rodiah Fikri Fahrudin Fikria Aulia, Farina Fina Berliana Azkiya Firda Fitrotul Unsa Fitrayani Lasawedi Frika Fatimah Zahra Friti May Sandi Furqani Hamdan, Dian Gandi P Gatot Soegiarto Gita Febriyani Gunistiyo Hadmoko, Wahyu Hahan Aryahiyyah Nabilah Harman Hamidson Harman Hamidson Hatta, Herman Hendriani, Ria Hendryarto, Kristianus Tommy Herlina, Ellin Herman Hidayatul Firdaus, Dwi Iis Khurniati Ilmi, Nur Fadilatul Imam Hanafi Imawan, Fathan Zidni Indarto, Tomi Ira Maya Hapsari Irgi Muhamad Irzak Yuliardy Nugroho Ismadini Ismi Zuliyanti Isram Jaka Waskita Jakaria Jakaria Jaya, Reja Putra JOKO MARIYONO Karim, Amat Karsih Khairi, Halilul Khoiriyah Khusniyati Masykuroh Koimah, Siti Mariyatul Kosasih, Asep Krisdayanti Kurnia Puji Astuti Kurnia, Heri Lailaturrahmi Laksmi Wulandari Lala Dwipa Ananda Lena Marianti Lexy Kareba Lina Suryani Linda Septaria Listina Paulus Lukman Hakim Lutfiya Masruroh, Asmi M. Anissul Fata M. Ed. Mgt M. Ilyas Saputra, Dikdik M. Nopri Ramadani Utama Buhri Mahendra, Prasetya Tri Masiti Maulana, Fachrul Mauziah Rahma Dini Meilia Maharani Meti Friska Meyke Garzia, Meyke Meylan Adam Misbachul Munir MITA RAHMAWATI Moh. Andri Mohammad Rifa'i Mohammad Umar Fakhrudin Muchtar, Daffa Rayhan Betha Mufidah CH Mufidah Ch Muh Ramli Muhadi Muhammad Al Fazri Muhammad Farhan Muhammad Nadzir Mukmin Suprayogi, Mukmin Nabila Pakaya Nadya Ananda Putri Nailatul Azizah Nanda Fatah Abdilah Neni Sintawardani Neni Sintawardani Netha Sasmita Nida Natania Rahma Nifada Pradelia Putri Trissiyan Ningrum, Surdiyah Asri Novaliana, Ika Nugroho, Risky Nur Ain Nur Ainun Nur Asep Saepulloh Nur Faida Nur Soleh Kamalludin Nurcholis Nurdiyana Nurfitriyani, Vivi Nurhayati Nurul Aurila Mafaza Nurul Indrawati Nurwulan Fitriyanti Oktaria Trisna Dewi Olpah, Hermiliani Pajar Supriatna Pitaloka, Dinda Widiya Pranata, Sudadi Pratiwi, Vina Andita Putri Nabila Putri, Mas Fierna Janvierna Lusie Rachmat Adi Chandra Raden Bambang Sumarsono Rahma Purba, Abdur Rahmad Fadli Rahmat Pratama Rahmat Pratama, Rahmat Rahmawati, Citra Ashri Rahmawati, Henita Rahmayanti Rakhmawati Ranny Anggraeni Rahmawardani Rasyidin Ratnasari, Arum Rida Raodatul Janah Rida Raodotul Janah Ridwan, Asrifia RIFKI LUTFANDIKA IRFANDANI Ripi Hamdani Purba Riska Putri Riyadini Riyan Utami Rizki Alviana Rizki, Rd. Riri Rosyid, Nurfaizal Rosyidi, Himawan Sabrienda Najwa A Saepulloh, Nur Asep Sakilla Dewanda Salam, Fitrah Febri Salma, Anindya Nabila Sandra Nufadila Setia Sandra Nufadila Setia Ningsih Sapto Hadi Imambachri Saputra, Alfian Ady Saputri, Fifin Sari, Tiara Sasi Maulina Senowarsito Septapati, Guntur Setyoningrum, Nilam Enggarsasi Sharifah Nursyahidah Syed Annuar Shinta Devi Nanda Permadi SHK, Suparman Sindy Sintiya Siswahyudianto Siti Aisyah Siti Hamidah Siti Karyati Siti Khumaira Siti Lestari Slamet, Fayrus Abadi Sombolinggi, Yeltiani Sonia Fijri Sri Utaminingsih Sri Wiyatiningsih Suharno Suhartono Suhendri Sukaris SULASTRI Sulis, Sulis Fitria Ningrum SUMANTO Sumarno Suparman Surdiyah Asri Ningrum Tabrani Tajudin Tambengi, Wahyu Tania Melani Putri Tasdiq Teguh Triwiyanto Tommy, Angga Setyadi Tony Seno Aji Tri Mahendra, Prasetya Tririsqi, Desi Turini UPGRIS Semarang Utami, Indi Dwi Vanny Aulia Vini Nilasari Vinka Rachma Aulia Vio Ananta Viola De Yusa Virgiyanti Warapark Maitreephun Wati Susiawati Widhiyanto Widya Tri Handayani Widya Wijaya, Sabar Bagus Willy Eka Septian Wiwik Widiyawati Wiwin Alief Bachtiar Yahya Krisetya Yenni Rohmatun Yenny WURYANDARI Yeyet Daryati Yolan Abe Yudistira Ramlan Yudoprasetyo, Kohar YULIA PUJIASTUTI YULIA PUJIASTUTI Yuni Alawaturrohmah Solihah Yuni Utami YUNITA Yuniwati Yupita Asmul Fauziah Yuyun Tajunnisa Zahra, Nur Amalia Zahroh, Aminatoz Zahwa Nur Syahda Zen Zuriana