|
International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 11, No. 2, 2014, pp. 543-550
|
Bioline Code: st14054
Full paper language: English
Document type: Short Communication
Document available free of charge
|
|
International Journal of Environment Science and Technology, Vol. 11, No. 2, 2014, pp. 543-550
en |
Optimization of sono-assisted dilute sulfuric acid process for simultaneous pretreatment and saccharification of rice straw
Rehman, M. S. U.; Kim, I.; Kim, K. H. & Han, J.I
Abstract
In this study, sono-assisted dilute sulfuric acid
process was evaluated for its viability of simultaneous
pretreatment and saccharification of rice straw. Three
critical factors for simultaneous pretreatment and saccharification
process, such as sonication time (30–50 min),
temperature (70–90 oC), and acid concentration (5–10 %),
were optimized to maximize reducing sugar yield using
Box-Behnken design and response surface methodology.
The response surface methodology model was found to be
adequately fitted to the obtained data. Simultaneous pretreatment
and saccharification factors were optimized at
sonication of 50 min, 80 oC and an acid concentration of
10 % yielding the maximum sugar content (31.78 g/100 g
of biomass). Scanning electron microscopy revealed that
the smooth surface of raw biomass was altered into a rough
and porous surface as a result of sugar release, which
showed the prospective feasibility of simultaneous pretreatment
and saccharification process. This process integration
may lead to develop economical bioethanol
production facility. However, further research is required
to make this process industrially viable.
Keywords
Bioethanol; Lignocellulosic biomass; Process integration; Ultrasound
|
|
© International Journal of Environment Science and Technology Alternative site location: http://www.ijest.org
|
|