Navigation Links
Wet ethanol production process yields more ethanol and more co-products
Date:11/9/2009

URBANA Using a wet ethanol production method that begins by soaking corn kernels rather than grinding them, results in more gallons of ethanol and more usable co-products, giving ethanol producers a bigger bang for their buck by about 20 percent.

"The conventional ethanol production method has fewer steps, but other than distillers dried grains with soluble, it doesn't have any other co-products," said University of Illinois Agricultural Engineer Esha Khullar. "Whereas in both wet and dry fractionation processes, the result is ethanol, distillers dried grains with soluble, as well as germ and fiber. Corn fiber oil for example can be extracted from the fiber and used as heart-healthy additives in buttery spreads that can lower cholesterol."

In comparing the wet and dry fractionation methods, Khullar's research team found that when using the wet fractionation method, the result is even higher ethanol concentrations coming out of the fermenter and better quality co-products than the dry method.

In the wet process, the corn kernels are soaked, washing the germ, which Khullar says is a cleaner separation. "There's not a lot of starch sticking to the germ. That's why you get higher oil concentrations."

After the kernels are soaked they are ground to produce a slurry. The slurry is soaked with enzymes so that it raises the specific gravity to a point where the germ starts floating and can be fished out from the top.

Khullar explained that in the dry fractionation method, the kernel is crushed, flattening out the germ. "The germ is still attached to a certain part of the endosperm and you still have a few starch pieces sticking to it. You have a very high starch content germ from the dry fractionation and that lowers the oil content. That's why there's a big difference in the wet process versus the dry process."

Dry and wet fractionation methods have been developed to separate out the germ and pericarp fiber before fermentation which is more efficient because the germ and fiber are non-fermentable. "It's better to removed them before the process. That way you have more starch in the fermenter. And you don't have to heat them and bump them and cool them," Khullar said.

The process doesn't require developing any new equipment. "It's just a modification of things that are already being done in the corn processing industry and can be done pretty easily," Khullar said.


'/>"/>

Contact: Debra Levey Larson
dlarson@illinois.edu
217-244-2880
University of Illinois at Urbana-Champaign
Source:Eurekalert

Related biology news :

1. LSU professors work to improve efficiency of ethanol fuel
2. Increase in ethanol production from corn could significantly impact
3. Can plant-based ethanol save us from our fossil fuel addiction?
4. Trash today, ethanol tomorrow
5. US rush to produce corn-based ethanol will worsen dead zone in Gulf of Mexico: UBC study
6. Fueling ethanol production while protecting water quality
7. Ethanol byproduct produces green results
8. New UGA biomass technology dramatically increases ethanol yield from grasses and yard waste
9. Turning waste material into ethanol
10. Patience pays off with methanol for uranium bioremediation
11. Study critiques corn-for-ethanols carbon footprint
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/30/2017)... -- On April 6-7, 2017, Sequencing.com will host the world,s ... at Microsoft,s headquarters in Redmond, Washington ... health and wellness apps that provide a unique, personalized ... is the first hackathon for personal genomics and the ... the genomics, tech and health industries are sending teams ...
(Date:3/29/2017)...  higi, the health IT company that operates the ... , today announced a Series B investment from ... The new investment and acquisition accelerates higi,s strategy to ... population health activities through the collection and workflow integration ... collects and secures data today on behalf of over ...
(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. ... have received the prestigious international IAIR Award for the most innovative ... ... Maldives Immigration ... Algeen (small picture on the right) have received the IAIR award for ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... ... July 20, 2017 , ... Resoundant, Inc. is pleased ... centers around the U.S. that offer MR Elastography for liver fibrosis staging. ... biopsy for staging liver fibrosis assessment. , “MRE:connect was created in response to ...
(Date:7/20/2017)... ... July 20, 2017 , ... ... digital pathology and artificial intelligence Tuesday, July 25, during the Association of Pathology ... Johns Hopkins Medicine. , Baras, Associate Director of Pathology Informatics, will present ...
(Date:7/18/2017)... , ... July 18, 2017 , ... ... accelerate pharmaceutical and biotherapeutics development, announces the launch of a new NTA biosensor ... chip enables researchers to study the kinetics of polyhistidine-tagged (His-tagged) molecules quickly and ...
(Date:7/18/2017)... ... ... Blood centers traditionally see a dangerous drop of blood donations during the ... community blood centers as high schools are out and many frequent donors are on ... up with the South Texas Blood & Tissue Center (STBTC), a subsidiary ...
Breaking Biology Technology: