Influence of different SSF conditions on ethanol production from corn stover at high solids loadings
(2015) In Energy Science & Engineering 3(5). p.481-489- Abstract
- In this study, three different kinds of simultaneous saccharification and fermentation (SSF) of washed pretreated corn stover with water-insoluble solids (WIS) content of 20% were investigated to find which one resulted in highest ethanol yield at high-solids loadings. The different methods were batch SSF, prehydrolysis followed by batch SSF and fed-batch SSF. Batch-SSF resulted in an ethanol yield of 75–76% and an ethanol concentration of 53 g/L. Prehydrolysis prior to batch SSF did not improve the ethanol yield compared with batch SSF. Fed-batch SSF, on the other hand, increased the yield, independent of the feeding conditions used (79–81%, 57–60 g/L). If the initial amount of solids during fed-batch SSF was lowered, the yield could be... (More)
- In this study, three different kinds of simultaneous saccharification and fermentation (SSF) of washed pretreated corn stover with water-insoluble solids (WIS) content of 20% were investigated to find which one resulted in highest ethanol yield at high-solids loadings. The different methods were batch SSF, prehydrolysis followed by batch SSF and fed-batch SSF. Batch-SSF resulted in an ethanol yield of 75–76% and an ethanol concentration of 53 g/L. Prehydrolysis prior to batch SSF did not improve the ethanol yield compared with batch SSF. Fed-batch SSF, on the other hand, increased the yield, independent of the feeding conditions used (79–81%, 57–60 g/L). If the initial amount of solids during fed-batch SSF was lowered, the yield could be improved to some extent. When decreasing the enzyme dosage, the greatest decrease in yield was seen in the fed-batch mode (75%), while lower or the same yield was seen in batch mode with and without prehydrolysis (73%). This resulted in similar ethanol yields in all methods. However, the residence time to achieve the final ethanol yield was shorter using fed-batch. This shows that fed-batch can be a better alternative also at a lower enzyme loading. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/19f52858-80d0-44e8-8763-c4221c695441
- author
- Gladis, Arne ; Bondesson, Pia-Maria LU ; Galbe, Mats LU and Zacchi, Guido LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Fed-batch; prehydrolysis; solid loading; SSF; steam pretreatment
- in
- Energy Science & Engineering
- volume
- 3
- issue
- 5
- pages
- 481 - 489
- publisher
- Wiley
- external identifiers
-
- scopus:84992205487
- wos:000374440800007
- ISSN
- 2050-0505
- DOI
- 10.1002/ese3.83
- language
- English
- LU publication?
- yes
- id
- 19f52858-80d0-44e8-8763-c4221c695441
- date added to LUP
- 2016-10-04 08:54:27
- date last changed
- 2023-12-06 15:24:54
@article{19f52858-80d0-44e8-8763-c4221c695441, abstract = {{In this study, three different kinds of simultaneous saccharification and fermentation (SSF) of washed pretreated corn stover with water-insoluble solids (WIS) content of 20% were investigated to find which one resulted in highest ethanol yield at high-solids loadings. The different methods were batch SSF, prehydrolysis followed by batch SSF and fed-batch SSF. Batch-SSF resulted in an ethanol yield of 75–76% and an ethanol concentration of 53 g/L. Prehydrolysis prior to batch SSF did not improve the ethanol yield compared with batch SSF. Fed-batch SSF, on the other hand, increased the yield, independent of the feeding conditions used (79–81%, 57–60 g/L). If the initial amount of solids during fed-batch SSF was lowered, the yield could be improved to some extent. When decreasing the enzyme dosage, the greatest decrease in yield was seen in the fed-batch mode (75%), while lower or the same yield was seen in batch mode with and without prehydrolysis (73%). This resulted in similar ethanol yields in all methods. However, the residence time to achieve the final ethanol yield was shorter using fed-batch. This shows that fed-batch can be a better alternative also at a lower enzyme loading.}}, author = {{Gladis, Arne and Bondesson, Pia-Maria and Galbe, Mats and Zacchi, Guido}}, issn = {{2050-0505}}, keywords = {{Fed-batch; prehydrolysis; solid loading; SSF; steam pretreatment}}, language = {{eng}}, number = {{5}}, pages = {{481--489}}, publisher = {{Wiley}}, series = {{Energy Science & Engineering}}, title = {{Influence of different SSF conditions on ethanol production from corn stover at high solids loadings}}, url = {{http://dx.doi.org/10.1002/ese3.83}}, doi = {{10.1002/ese3.83}}, volume = {{3}}, year = {{2015}}, }