4.7 Article

Reframing biorefinery processing chain of corn fiber for cellulosic ethanol production

Journal

INDUSTRIAL CROPS AND PRODUCTS
Volume 170, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.indcrop.2021.113791

Keywords

Corn fiber; Cellulosic ethanol; Acetic acid; Biorefinery chain; Pretreatment; Biodetoxification

Funding

  1. National Natural Science Foundation of China [21978083, 31961133006]

Ask authors/readers for more resources

This study reframed the biorefinery chain by conducting enzymatic hydrolysis before biodetoxification to improve the efficiency of corn fiber biorefining, ultimately achieving higher ethanol production.
Corn fiber is a byproduct of wet milling of corn grains with high hemicellulose content. Hemicellulose is only partially hydrolyzed in acid pretreatment and the complete hydrolysis occurs in the subsequent enzymatic hydrolysis. In the regular biorefinery chain of lignocellulose, the detoxification of toxic inhibitors is conducted immediately after pretreatment. When this process arrangement applies to corn fiber, acetic acid is accumulated to high level because of acetyl group release from residual hemicellulose. This study re-framed the biorefinery chain by conducting enzymatic hydrolysis before biodetoxification to completely release acetic acid from hemicellulose in corn fiber. Then the biodetoxification was followed immediately to degrade acetic acid, furfural and 5-hydroxymethylfurfural with the minimum loss of glucose and xylose. The improved ethanol production (70.2 g/L, or 8.9 % by v/v) was obtained by the re-framed chain of corn fiber biorefining. This study provided a practical approach for utilization of corn fiber for biofuel production.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available