Analisis Termogravimetri dan Dekomposisi Termal pada Produksi Bio-Oil dari Daun Tebu Menggunakan Proses Pirolisis Cepat

Ilham Mufandi, Ratchaphon Suntivarakorn, Wasakorn Treedet, Piyapong Singbua

Sari


Daun tebu merupakan salah satu limbah agroindustri yang berasal dari tanaman tebu. Pada penelitian ini daun tebu dimanfaatkan sebagai bahan baku pirolisis yang menghasilkan tiga produk utama yaitu liquid, padat, dan. Fokus penelitian ini adalah mengidentifikasi pengaruh suhu pirolisis, mengidentifikasi perubahan massa, mengidentifikasi dekomposisi, dan mengidentifikasi komposisi kimia bio-oil. Pirolisis dilakukan menggunakan reaktor Circulating Fluidized Bed (CFBr) dengan variasi suhu dari 440oC sampai 520oC. Analisis karaktersitik pirolisis daun tebu menggunakan analisis termogravimetri (TGA), DTA, dan analisis GC-MS. Hasil penelitian menunjukan bahwa suhu operasi memiliki pengaruh yang signifikan pada pirolisis. Bio-oil tertinggi terdapat pada suhu 480oC yaitu 34,33%. Hasil TGA diketahui bahwa proses dekomposisi daun tebu dibagi menjadi 3 tahap yaitu: 1) dehidrasi kadar air terjadi pada suhu <200oC, 2) pirolisis secara aktif terjadi pada suhu 200oC sampai 380oC, dan 3) proses pirolisis secara pasif terjadi pada suhu 380oC sampai 500oC. Hasil DTA diketahui bahwa perubahan termal dipengaruhi oleh laju pemanasan pirolisis. Senyawa bio-oil tertinggi adalah β-D-Glucopyranose 1,6-anhydro, acetic acid, dan 2-Propanone 1-hydroxy-. Penelitian ini membuktikan bahwa suhu memiliki peran penting pada proses pirolisis.

Kata Kunci


Daun tebu; Dekomposisi Termal; Pirolisis;

Teks Lengkap:

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Referensi


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DOI: https://doi.org/10.31315/e.v20i2.9849

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