Browsing by Author "Irfanto, Herryawan"

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    PROSES BLEACHING PELEPAH SAWIT HASIL HIDROLISIS SEBAGAI BAHAN BAKU NITROSELULOSA DENGAN VARIASI SUHU DAN WAKTU REAKSI
    (2013-03-21) Irfanto, Herryawan; Padil; A Yelmida
    One way to improve the composition of cellulose in hydrolysis product of oil palm fronds is using bleaching process. The purpose of this research is to find out the temperature and time of bleaching that can give the composition of cellulose above 92%. The method that used is bleaching using hydrogen peroxide with variation of temperature of bleaching (50, 60, 70, 80, and 90oC) and time of bleaching (30, 45, 60, 75, and 90 minutes). After bleaching, the chemical composition of bleaching product of oil palm fronds is analyzed. The best operation condition is be able at temperature of bleaching 90oC and time of bleaching 60 minutes with the purity of alpha-cellulose obtained 95,11%.