CHRISYAN FITO , SIMAMORA (2026) KARAKTERISASI SYNGAS HASIL GASIFIKASI PELET BAMBU BETUNG (Dendrocalamus asper) MENGGUNAKAN DOWNDRAFT GASIFIER. FAKULTAS PERTANIAN, UNIVERSITAS LAMPUNG.
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Abstract
Ketergantungan pada energi fosil mendorong eksplorasi sumber energi terbarukan, salah satunya melalui pemanfaatan biomassa bambu betung (Dendrocalamus asper) sebagai bahan baku gasifikasi. Penelitian ini bertujuan untuk menganalisis komposisi syngas, nilai Lower Heating Value (LHV), serta karakteristik proksimat pelet bambu betung dan produk samping (ash) hasil gasifikasi menggunakan downdraft gasifier. Proses gasifikasi dilakukan selama 60 menit menggunakan 20 kg pelet bambu betung pada reaktor downdraft gasifier berkapasitas 15 kWh, dan analisis syngas dilakukan secara real-time menggunakan Portable Infrared Syngas Analyzer Gasboard G3100-P. Hasil penelitian menunjukkan bahwa syngas yang dihasilkan mengandung rata-rata CO sebesar 13,62%, CO₂ 13,28%, CH₄ 2,55%, H₂ 8,65%, dan O₂ 1,64%, dengan nilai LHV rata-rata sebesar 887,57 kcal/m³. Analisis proksimat pelet bambu betung menunjukkan kadar air 7,10%, kadar abu 12,02%, kadar zat terbang 74,11%, dan karbon terikat 6,78%. Setelah gasifikasi, ash (by-product) memiliki kadar air 4,67%, kadar abu 73,09%, kadar zat terbang 17,61%, dan kadar karbon terikat 4,63%. Pelet bambu betung terbukti memenuhi syarat sebagai bahan baku downdraft gasifier, dengan kadar air di bawah 20% dan kadar zat terbang yang tinggi, sehingga berpotensi menjadi sumber energi terbarukan yang berkelanjutan. Kata kunci: bambu betung, biomassa, downdraft gasifier, gasifikasi, lower heating value, pelet, syngas The global reliance on fossil fuels has driven the exploration of renewable energy sources, including the use of betung bamboo (Dendrocalamus asper) biomass as a feedstock for gasification. This study aims to analyze the syngas composition, lower heating value (LHV), and proximate characteristics of D. asper bamboo pellets, as well as the by-product (ash) resulting from their gasification in a downdraft gasifier. The gasification process was conducted for 60 minutes using 20 kg of D. asper bamboo pellets in a 15-kWh downdraft gasifier reactor, with real-time syngas analysis performed using a portable infrared syngas analyzer (Gasboard-3100P). The results demonstrated that the produced syngas contained average concentrations of 13.62% CO, 13.28% CO₂, 2.55% CH₄, 8.65% H₂, and 1.64% O₂, yielding an average LHV of 887.57 kcal/m³. Proximate analysis of the bamboo pellets revealed a moisture content of 7.10%, an ash content of 12.02%, a volatile matter content of 74.11%, and a fixed carbon content of 6.78%. Following gasification, the ash byproduct exhibited a moisture content of 4.67%, an ash content of 73.09%, a volatile matter content of 17.61%, and a fixed carbon content of 4.63%. These findings demonstrate that betung bamboo pellets meet the critical requirements for downdraft gasifier feedstock—specifically, a moisture content below 20% and high volatile matter—highlighting their potential as a sustainable, renewable energy source. Keywords: betung bamboo, biomass, downdraft gasifier, gasification, Lower Heating Value, pellets, syngas
| Item Type: | Other |
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| Subjects: | ?? 600 ?? ?? 630 ?? |
| Divisions: | Fakultas Pertanian > Prodi Kehutanan |
| Depositing User: | 2606301115 Digilib |
| Date Deposited: | 03 Jul 2026 08:53 |
| Last Modified: | 03 Jul 2026 08:53 |
| URI: | http://digilib.unila.ac.id/id/eprint/101986 |
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