Agricultural and Biosystems Engineering Publications
Campus Units
Agricultural and Biosystems Engineering, Civil, Construction and Environmental Engineering, Food Science and Human Nutrition, Toxicology
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
9-4-2015
Journal or Book Title
Separation and Purification Technology
Volume
151
First Page
165
Last Page
171
Research Focus Area(s)
Biological and Process Engineering and Technology
DOI
10.1016/j.seppur.2015.07.026
Abstract
Fermentation of sugar to produce ethanol also produces volatile byproducts. This study was aimed at purifying corn-based ethanol for industrial and pharmaceutical use. The research was on treatment for 10 impurities removal after distillation. The ethanol headspace was sampled with solid-phase microextraction and analyzed with gas chromatography–mass spectrometry. A 40 mg/L ozone treatment resulted in >56% and >36% removal of styrene and 2-pentylfuran, respectively, without significant generation of byproducts. A 60 g/L activated carbon (AC) treatment with 270 min adsorption time resulted in 84%, >72%, and >78% removal of ethyl hexanoate, ethyl octanoate, and ethyl decanoate respectively. CO2-based stripping, at 675 LStripping gas/LSample, removed 65%, >82%, and >83% acetaldehyde, ethyl vinyl ether, and 1,1-diethoxyethane respectively. A combination of three approaches effectively removes these 8 impurities.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Copyright Owner
Elsevier B.V.
Copyright Date
2015
Language
en
File Format
application/pdf
Recommended Citation
Onuki, Shinnosuke; Koziel, Jacek A.; Jenks, William S.; Cai, Lingshuang; Rice, Somchai; and van Leeuwen, Johannes, "Ethanol purification with ozonation, activated carbon adsorption, and gas stripping" (2015). Agricultural and Biosystems Engineering Publications. 909.
https://lib.dr.iastate.edu/abe_eng_pubs/909
Included in
Agriculture Commons, Bioresource and Agricultural Engineering Commons, Organic Chemistry Commons
Comments
This article is published as Onuki, Shinnosuke, Jacek A. Koziel, William S. Jenks, Lingshuang Cai, Somchai Rice, and J. Hans van Leeuwen. "Ethanol purification with ozonation, activated carbon adsorption, and gas stripping." Separation and Purification Technology 151 (2015): 165-171. DOI: 10.1016/j.seppur.2015.07.026. Posted with permission.