PENGHEMATAN KONSUMSI KATALIS DALAM PROSES HIDROLISIS BIOMASSA UNTUK PRODUKSI FURFURAL

• Main Author: Fadjarwaty, Diyah
• Format: Theses
• Language: Indonesia
• Subjects: Teknik kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/5405
• Institution: Institut Teknologi Bandung

Hydrolysis of empty fruit bunch conducted in a sour condition. Sour catalyst which able to be used for example H2SO4 and HCI. This catalyst can push the happening of reaction of forming furfural from pentosan which implied in the empty fruit bunch. Besides furfural and sugar hydrolisate also contain of organic acid as product from other side for example acetate acid and formic acid. In this research formic acid is estimated slimmest of its amount so that is not detected by appliance of gas chromatografi. Furfural from hydrolisate taken by azeotrope distillation and yield the raw furfura Azeotrope distillation leave over the bottom product which still contain of organic acid. The organic acid may be function as catalyst so that can push the process hydrolysis hereinafter. Use of bottom product as cooker dilution of next hydrolysis process conducted as effort thrift of catalyst. The mentioned proven in this research. Although still require the fresh acid for the adjust of pH but addition H2SO4 in each usage phase repeat the catalyst do not counted used at hydrolysis phase by fresh acid ( phase 1 14,6 mL). Thrift of catalyst of H2SO4 at this research can reach 30% (8 mL) with the acquirement of fu fural about 10 g / kg dry of raw material at phase 3. Bottom Product also contain various compound and possible this matter causing of bottom product at phase 4 have inefficient again its use. Requirement of H2SO4 at phase 4 reaching 12 mL ( 80% from phase 1) with the downhill acquirement about 44%. Use HCI as catalyst of substitution H2SO4 showed the satisfying result. With the different method in the reality used of catalyst HCl can yield the furfural of more but time which required longer. Use repeat the catalyst HC1 can be conducted until phase 4 with the acquirement furfural reach 56 g /kg dry of raw material.<p From economic analysis which have been done used repeat the catalyst H2SO4 is more beneficial compared to by katalis HCI. If evaluated from environmental aspect, use repeat the catalyst which have been done by this can lessen the environmental contamination.