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All Journal Jurnal Penelitian dan Pengembangan Pendidikan Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN Journal of Energy, Mechanical, Material and Manufacturing Engineering Prosiding Seminar Nasional Teknik Mesin International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Asean Journal of Science and Engineering (AJSE) Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Jurnal Polimesin
Widya Wijayanti
Department of Conservative Dentistry, Faculty of Dentistry, Universitas Indonesia, Jakarta 10430
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Transportation

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The effect of biomass ratio and CaO/Si catalyst on hydrogen production from corncob–wood pellet gasification Suwandono, Purbo; Wijayanti, Widya; Ismail, Nova Risdiyanto; Akbar, Dzulfikar Johan; Pambudi, Wisnu Setyo Catur
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7803

Abstract

Biomass co-gasification combined with catalytic upgrading offers a promising pathway for enhancing hydrogen-rich syngas production. This study investigates co-gasification of corncob and wood pellets in an updraft fixed-bed reactor, integrated with ex-situ CaO/Si catalytic upgrading. Nine experimental runs were conducted by varying the corncob: pellet ratio (1:1–3:1), catalyst loading (6–10 wt% of 80 g biomass), and CaO/Si ratio (1:1–3:1), while reactor geometry, inlet air speed (10 m/s), and run duration (1500 s) were kept constant. The product gas was routed through an ex-situ catalyst bed, cooled in a condenser, and then analyzed using calibrated MQ sensors (H₂, CH₄, CO, CO₂). Gas composition was monitored using calibrated MQ sensors to provide comparative trends among operating conditions. The best performance was observed in Run 7 (50:50 biomass ratio, 10 wt% catalyst, CaO/Si = 2:1), achieving peak H₂ at 8000 ppm and CH₄ at 46,000 ppm, while CO₂ decreased to 16,000 ppm compared with several other runs. This outcome was consistent with CO₂ sorption by CaO, which can shift reactions toward higher H₂ formation (e.g., via the WGS equilibrium), and was supported by downstream upgrading reactions in the hot-gas line. The results suggest that combining biomass blending with ex-situ CaO/Si upgrading can improve the characteristics of hydrogen-enriched syngas within the investigated operating range.Biomass co-gasification combined with catalytic upgrading offers a promising pathway for enhancing hydrogen-rich syngas production. This study investigates co-gasification of corncob and wood pellets in an updraft fixed-bed reactor, integrated with ex-situ CaO/Si catalytic upgrading. Nine experimental runs were conducted by varying the corncob: pellet ratio (1:1–3:1), catalyst loading (6–10 wt% of 80 g biomass), and CaO/Si ratio (1:1–3:1), while reactor geometry, inlet air speed (10 m/s), and run duration (1500 s) were kept constant. The product gas was routed through an ex-situ catalyst bed, cooled in a condenser, and then analyzed using calibrated MQ sensors (H₂, CH₄, CO, CO₂). Gas composition was monitored using calibrated MQ sensors to provide comparative trends among operating conditions. The best performance was observed in Run 7 (50:50 biomass ratio, 10 wt% catalyst, CaO/Si = 2:1), achieving peak H₂ at 8000 ppm and CH₄ at 46,000 ppm, while CO₂ decreased to 16,000 ppm compared with several other runs. This outcome was consistent with CO₂ sorption by CaO, which can shift reactions toward higher H₂ formation (e.g., via the WGS equilibrium), and was supported by downstream upgrading reactions in the hot-gas line. The results suggest that combining biomass blending with ex-situ CaO/Si upgrading can improve the characteristics of hydrogen-enriched syngas within the investigated operating range.
Co-Authors A.A. Ketut Agung Cahyawan W Ahmad Yani Akbar, Dzulfikar Johan Akhlis Rizza, Muhammad AM Mufarrih Amir, Ahmad Ihwan Andi Nugroho, Andi Christia Meidiana Christian Relmasira, Stefanus Denny Widhiyanuriyawan Dody Candra Kumara, Dody Candra Dwi Irawan Eko Siswanto Farid Majedi, Farid Hamidi, Nurcholis I Nyoman Gede Wardana I.N.G. Wardana Ikhwanul Qiram Kusumastuti, Rizky Kusumo, Herma Nugroho rono adi Lilis Yuliati Mega Nur Sasongko Musyaroh, Musyaroh Nova Risdiyanto Ismail Nurkholis Hamidi Nuryosuwito, Nuryosuwito Pambudi, Wisnu Setyo Catur Purbo Suwandono Rahmad, Hadi Razi, Misru Razi, Misru Rizaldy, Ahmad Difal Rudy Soenoko S., Sudjito Sasmoko, Sasmoko Setiadhi, David Slamet Wahyudi Sofana, Ilyas Stefanus Christian Relmasira Sudjito Soeparman Tseng, Chung-Jen Wardana, I. N. G. Wardoyo Wardoyo Widodo, Agung S. Wijayanto, Vera Dwi