PARAMETRIC OPTIMIZATION OF OIL PALM MESOCARP FIBER VALORIZATION WITH HYBRID OZONATION-ULTRASONIC PRETREATMENT METHOD

Oil palm mesocarp fiber is a promising lignocellulosic biomass as raw material for valorizing into more valuable products such second-generation biofuels, biocomposites, or bioenergy. However, the lignin composition present in provides resistance to valorization process and protects cellulose composition, thereby limiting conversion of products. The hybrid ozonation-ultrasonic method lignin-degrading starting be considered an effective method. Additionally, Box-Behnken Design (BBD) was employed investigate each independent variable's effect on pretreatment conditions using response surface methodology (RSM), namely reaction time (30-90) min, temperature (20 -40) oC ozone flow rate (1-3) L/min percentage degradation (%). optimum condition determined desirability function graph. results showed that time, temperature, had significant (p <0.05). obtained highest degradation, 92.08% at 30 with 2 60 minutes time. decrease absorption peaks 1638 cm-1 1427 supported by analysis increased crystallinity sample after 80.20% validated changes morphology indicating compound been successfully degraded from fibers. ABSTRAK: Sabut gentian kelapa sawit berpotensi sebagai bahan mentah biojisim lignoselulosa bagi menambah nilai produk seperti bio api generasi kedua, biokomposit atau biotenaga. Walau bagaimanapun, komposisi yang wujud dalam menentang proses tambah dan melindungi selulosa, dengan itu mengehadkan penukaran selulosa kepada lebih berharga. Kaedah hibrid ozonasi-ultrasonik kaedah merendahkan lignin, mula mendapat perhatian berkesan. Selain itu, Reka Bentuk Kotak-Behnken telah digunakan menyiasat setiap kesan pembolehubah bebas pada keadaan prarawatan menggunakan permukaan tindak balas iaitu masa suhu kadar aliran ozon terhadap peratusan degradasi Keadaan ditentukan graf fungsi keboleh inginan. Dapatan kajian menunjukkan bahawa balas, mempunyai signifikan (p<0.05). tertinggi adalah selama minit balas. Penurunan puncak penyerapan disokong oleh keputusan analisis peningkatan kehabluran sampel selepas sebanyak disahkan perubahan morfologi sabut sebatian berjaya didegradasi daripada gentian.