LAPSE:2018.1057
Published Article
LAPSE:2018.1057
Techno-Economic Analysis of Integrating First and Second-Generation Ethanol Production Using Filamentous Fungi: An Industrial Case Study
November 27, 2018
The 2nd generation plants producing ethanol from lignocelluloses demand risky and high investment costs. This paper presents the energy- and economical evaluations for integrating lignocellulose in current 1st generation dry mill ethanol processes, using filamentous fungi. Dry mills use grains and have mills, liquefactions, saccharifications, fermentation, and distillation to produce ethanol, while their stillage passes centrifugation, and evaporation to recycle the water and dry the cake and evaporated syrup into animal feed. In this work, a bioreactor was considered to cultivate fungi on the stillage either before or after the centrifugation step together with pretreated lignocellulosic wheat bran. The results showed that the integrated 1st and 2nd generation ethanol process requires a capital investment of 77 million USD, which could yield NPV of 162 million USD after 20 years. Compared to the fungal cultivation on thin stillage modified 1st generation process, the integrated process resulted in 53 million USD higher NPV. The energy analysis showed that the thin stillage modified 1st generation process could reduce the overall energy consumption by 2.5% and increase the ethanol production by 4%. Such modifications in the 1st generation processes and integration concepts could be interesting for the ethanol industries, as integrating lignocelluloses to their existing setup requires less capital investment.
Keywords
Ethanol, lignocelluloses, process design, process integration, Technoeconomic Analysis
Subject
Suggested Citation
Rajendran K, Rajoli S, Taherzadeh MJ. Techno-Economic Analysis of Integrating First and Second-Generation Ethanol Production Using Filamentous Fungi: An Industrial Case Study. (2018). LAPSE:2018.1057
Author Affiliations
Rajendran K: Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden; Department of Molecular Biosciences and Bioengineering, University of Hawai’i at Mānoa, Honolulu, HI 96822, USA [ORCID]
Rajoli S: Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden
Taherzadeh MJ: Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden [ORCID]
[Login] to see author email addresses.
Journal Name
Energies
Volume
9
Issue
5
Article Number
E359
Year
2016
Publication Date
2016-05-12
Published Version
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en9050359, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2018.1057
This Record
External Link

doi:10.3390/en9050359
Publisher Version
Download
Files
[Download 1v1.pdf] (1.6 MB)
Nov 27, 2018
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
756
Version History
[v1] (Original Submission)
Nov 27, 2018
 
Verified by curator on
Nov 27, 2018
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2018.1057
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version