HIDROLISIS LIGNOSELULOSA DAN KARAKTERISASI LIGNIN DARI MATERIAL LIMBAH KELAPA DENGAN METODE HIDROLISIS ASAM SULFAT
DOI:
https://doi.org/10.29103/jtku.v10i2.5573Keywords:
batok, sabut, kelapa, lignin, hidrolisis, asam sulfatAbstract
Penelitian ini melakukan hidrolisis lignoselulosa menggunakan asam sulfat dengan limbah kelapa berupa batok dan sabut kelapa untuk memeroleh zat lignin. Rasio padatan:larutan yang digunakan sebesar 3:25 (m/v). Variasi waktu pemanasan 2 hingga 5 jam. Lignin tidak larut asam yang diperoleh diuji karakterisasi menggunakan FT-IR dan SEM. Rata-rata yield lignin tidak larut dan larut asam pada batok kelapa lebih besar daripada sabut kelapa. Gugus metoksil menghilang setelah hidrolisis, gugus guaiasil terdeteksi pada batok kelapa setelah proses hidrolisis, adanya cincin aromatik yang berkaitan dengan lignin pada masing-masing sampel sebelum dan setelah hidrolisis, serta gugus siringil pada sabut kelapa sebelum dan setelah proses hidrolisis.References
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- Gambar 12. Hasil SEM sabut kelapa sesudah hidrolisis
- Gambar 1. Skema rangkaian alat refluks
- Gambar 2. Hasil analisa kadar air pada sampel sebelum hidrolisis asam sulfat
- Gambar 3. Hasil yield lignin tidak larut dalam asam rata-rata dari residu hasil hidrolisis asam sulfat batok dan sabut kelapa
- Gambar 4. Hasil yield lignin larut dalam asam rata-rata dari filtrat hasil hidrolisis asam sulfat batok dan sabut kelapa
- Gambar 5. Hasil pengukuran spektrum FT-IR batok kelapa sebelum hidrolisis asam sulfat
- Gambar 6. Hasil pengukuran spektrum FT-IR batok kelapa (perlakuan refluks 3 jam) setelah hidrolisis asam sulfat
- Gambar 7. Hasil pengukuran spektrum FT-IR sabut kelapa sebelum hidrolisis asam sulfat
- Gambar 8. Hasil pengukuran spektrum FT-IR sabut kelapa (perlakuan refluks 4 jam) setelah hidrolisis asam sulfat
- Gambar 9. Hasil SEM batok kelapa sebelum hidrolisis
- Gambar 10. Hasil SEM batok kelapa sesudah hidrolisis
- Gambar 11. Hasil SEM sabut kelapa sebelum hidrolisis
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