PRODUKSI BIOETHANOL DARI RUMPUT GAJAH SECARA KIMIA
Abstract: Availability of
bulrush can be obtained by continue and abundance, representing one the less
exploited crop. Bulrush only used as livestock food, sometimes bulrush also
considered to be intruder crop. But bulrush have cellulose rate, glucose,
extract able to be used as one the ethanol producer materials. Obtained Ethanol
rate from study produce bio ethanol from bulrush between 23-28 %, to increase
purity of ethanol rate conducted by dissociation use
batch distillation. Research
produces bio ethanol from
bulrush chemically to
look for bio ethanol alternative raw material and
study sour hydrolysis process and fermentation. In research produce bio ethanol
from bulrush chemically to process hydrolysis at condition remains to:
temperature 30oC, water 7 liters, hydrolysis time
1hour and condition
change: bulrush weight
50, 100, 150,
200, 250, 300
(gram), HCL condensation volume
10, 20, 30, 40, 50(ml). Is then continued by fermentation process at condition
remain to: temperature 30oC, pH 4.5; fermentation volume 500 ml and condition
change: fermentation time 4, 5, 6, 7, 8 (day), starter 8 %, 10 %, 12 %. From
research produces bio ethanol from bulrush chemically obtained [by] result,
[at] best glucose rate hydrolysis process 26.29 %, bulrush weight 200 gram. At
best condition ferment process use saccharomyces cerevisiae starter 10 % during
6 day, yielding ethanol equal to 27.71 % and glucose rate is rest of 8.09 %. To
obtain get purity ethanol product to process separation of continuation with
batch distillation, after conducted separation continue to be obtained ethanol
rate (90-95) %. From result is obtained that is ethanol rate (90-95) %, bulrush
can be used as alternative raw material making of bio ethanol. But for the
standard of bio ethanol that is ethanol rate above 98 %, so that require to
furthermore process.
Penulis: Ni Ketut Sari
Kode Jurnal: jpkimiadd090207
