Abstract
Conversion of corn fiber to ethanol in the dry grind process can increase ethanol yields, improve coproduct quality and contribute to process sustainability. This work investigates the use of two physio-chemical pretreatments on corn fiber and effect of cellulase enzyme dosage to improve ethanol yields. Fiber separated after liquefaction of corn was pretreated using (I) hot water pretreatment (160 °C for 5, 10 or 20 min) and (II) wet disk milling and converted to ethanol. The conversion efficiencies of hot water pretreated fiber were higher than untreated fiber, with highest increase in conversion (10.4%) achieved for 5 min residence time at 160 °C. Disk milling was not effective in increasing conversion compared to other treatments. Hydrolysis and fermentation of untreated fiber with excess cellulase enzymes resulted in 33.3% higher conversion compared to untreated fiber.
| Original language | English (US) |
|---|---|
| Article number | 2921 |
| Journal | Energies |
| Volume | 11 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2018 |
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Keywords
- Corn fiber
- Disk milling
- Dry grind
- Ethanol
- Pretreatment
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Energy (miscellaneous)
- Control and Optimization
- Electrical and Electronic Engineering
Cite this
Ethanol production from corn fiber separated after liquefaction in the dry grind process. / Kurambhatti, Chinmay V.; Kumar, Deepak; Rausch, Kent D.; Tumbleson, Mike E.; Singh, Vijay.
In: Energies, Vol. 11, No. 11, 2921, 11.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ethanol production from corn fiber separated after liquefaction in the dry grind process
AU - Kurambhatti, Chinmay V.
AU - Kumar, Deepak
AU - Rausch, Kent D.
AU - Tumbleson, Mike E.
AU - Singh, Vijay
PY - 2018/11
Y1 - 2018/11
N2 - Conversion of corn fiber to ethanol in the dry grind process can increase ethanol yields, improve coproduct quality and contribute to process sustainability. This work investigates the use of two physio-chemical pretreatments on corn fiber and effect of cellulase enzyme dosage to improve ethanol yields. Fiber separated after liquefaction of corn was pretreated using (I) hot water pretreatment (160 °C for 5, 10 or 20 min) and (II) wet disk milling and converted to ethanol. The conversion efficiencies of hot water pretreated fiber were higher than untreated fiber, with highest increase in conversion (10.4%) achieved for 5 min residence time at 160 °C. Disk milling was not effective in increasing conversion compared to other treatments. Hydrolysis and fermentation of untreated fiber with excess cellulase enzymes resulted in 33.3% higher conversion compared to untreated fiber.
AB - Conversion of corn fiber to ethanol in the dry grind process can increase ethanol yields, improve coproduct quality and contribute to process sustainability. This work investigates the use of two physio-chemical pretreatments on corn fiber and effect of cellulase enzyme dosage to improve ethanol yields. Fiber separated after liquefaction of corn was pretreated using (I) hot water pretreatment (160 °C for 5, 10 or 20 min) and (II) wet disk milling and converted to ethanol. The conversion efficiencies of hot water pretreated fiber were higher than untreated fiber, with highest increase in conversion (10.4%) achieved for 5 min residence time at 160 °C. Disk milling was not effective in increasing conversion compared to other treatments. Hydrolysis and fermentation of untreated fiber with excess cellulase enzymes resulted in 33.3% higher conversion compared to untreated fiber.
KW - Corn fiber
KW - Disk milling
KW - Dry grind
KW - Ethanol
KW - Pretreatment
UR - http://www.scopus.com/inward/record.url?scp=85057784542&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057784542&partnerID=8YFLogxK
U2 - 10.3390/en11112921
DO - 10.3390/en11112921
M3 - Article
AN - SCOPUS:85057784542
VL - 11
JO - Energies
JF - Energies
SN - 1996-1073
IS - 11
M1 - 2921
ER -