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All Journal TEKNIK WIDYA TEKNIKA Transmisi ROTOR: JURNAL ILMIAH TEKNIK MESIN Turbo : Jurnal Program Studi Teknik Mesin Resona : Jurnal Ilmiah Pengabdian Masyarakat Conference on Innovation and Application of Science and Technology (CIASTECH) JOURNAL OF SCIENCE AND APPLIED ENGINEERING JAST : Jurnal Aplikasi Sains dan Teknologi Jurnal Energi dan Teknologi Manufaktur Scientific Journal of Mechanical Engineering Kinematika JURNAL FLYWHEEL GUYUB: Journal of Community Engagement Jurnal Mesin Nusantara ARMATUR : Artikel Teknik Mesin dan Manufaktur Surya Teknika: Jurnal Ilmiah Teknik Mesin Prosidia Widya Saintek Jurnal Polimesin PROTON : Jurnal Ilmu-Ilmu Teknik Mesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Nova Risdiyanto Ismail
Program Studi S1 Teknik Mesin, Fakultas Teknik, Universitas Widyagama Malang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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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.
IDENTIFIKASI PENAMBAHAN SERBUK TEMBAGA PADA PELAT PENYERAP MORTAR UNTUK MENINGKATKAN KINERJA SOLAR WATER HEATER Achmad Burhanudin; Nova Risdiyanto Ismail; Dadang Hermawan; Akhmad Farid
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 1 (2025): SJME Kinematika Juni 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i1.690

Abstract

Indonesia has a high potential for solar energy, yet it is not optimally utilized. Additionally, the demand for hot water in Malang City is considerable. To meet this need, solar water heaters (SWH) can harness solar energy. However, one issue with SWH is that the mortar absorber plate has low thermal conductivity. This can be improved by adding copper powder to the mortar absorber plate. This study aims to identify the effects of adding copper powder to the absorber plate to enhance the performance of the solar water heater. The research compares mortar absorber plates with and without copper powder. Testing is conducted with varying flow rates. The study employs experimental methods, utilizing microscopic imaging, thermal conductivity tests, and SWH performance assessments. Microscopic analysis revealed that copper powder mixed with cement enhances the mortar. The addition of copper powder to the absorber plate (SWH.T) increases thermal conductivity by 25.16% compared to the standard version (SWH.S). Efficiency improvements for SWH.T over SWH.S at flow rates of 50, 150, and 250 ml/min are 24.20%, 9.91%, and 11.79%, respectively, with the highest efficiency for SWH.T at 250 ml/min reaching 45.56%.
Co-Authors AA Sudharmawan, AA Achmad Burhanudin Achmad Burhanudin Agung Suprapto, Agung Agus Suyatno Ahmad Zainul Huda Akbar, Dzulfikar Johan Akhmad Farid Akhmad Farid Akhmad Farid Akim Tua Al Barr, Muhammad Haafizh Ana Sopanah, Ana Andersen Karel Ropa Andi Hardianto Andi Kurniawan Andi Kurniawan Andika Pratama Andika Pratama Andrian Bayu Pradhana Andy Hardianto Angga Ridwan Pratama Arie Restu Wardhani Arief Rizki Fadhillah Baihaqi, Rosiawan Bayu Ismoyo Candra Aditya Candra Aditya Catur Heri Setiyawan Dadang Hermawan Dadang Hermawan Dadang Hermawan Deky Framasta Didik Hardianto Didik Hardianto Dwi Prasetio Utomo Fachrudin Fachrudin Fattah, Hamidah Nurrul Frida Dwi Anggraeni Frida Dwi Anggraeni Fuad Arizal Yahya Gatot Soebiyakto Gatot Soebiyakto Gatot Soebiyakto Hari Budi Raharjo Helmy Darmawan Hendra Kurniawan Heni Pujiastuti Hutri Wicaksono, Leo Jumali - Kerong, Adrianus Geroda Khaerul Anwar Khaerul Anwar Khaerul Anwar Kurniawan, Anggie Leo Hutri Wicaksono Leo Hutri Wicaksono Leo Hutri Wicaksono Leo Hutri Wicaksono M. Ghazali Arrahim Mochammad Nurcholis Majid Muhammad Agus Sahbana Muhammad Agus Sahbana Muhammad Agus Sahbana Muhammad Nur Hasan Muzaki, Mochamad Nafisah, Viona Naif Fuhaid Naif Fuhaid Nasution, Annio Indah Lestari Ngudi Tjahjono Nurhasan, Muhammad Nurida Finahari Pambudi, Wisnu Setyo Catur Prasetyo, Muhammad Awi Purbo Suwandono Rahayu Puji Suci Renada Julia Sakinah Ridho Guruh Syah Putra Riza Bahtiar Sulistyan Rizki Hidayat Sang Saka Adi Pangestu Santos, Armando Ferreira dos Sigit Untoro Silviana Silviana Sitanggang, Rickie Natanael Solichi, Azis Solly Aryza Sujawi Sholeh Sadiawan Supriadi Supriadi Suriansyah - Suriansyah - Syamsiar, Syamsiar teddy wicaksono wicaksono Tiara Aninditha Wicaksono, Hangga Wicaksono, Leo Hutri Widya Wijayanti Wijaya, Rendra Adi Yundari, Yundari