Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 297, Issue -, Pages -Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2021.113329
Keywords
Hand sanitizer production; Impurities; Hazardous air pollutants; Process streams; SARS-CoV-2
Categories
Funding
- Nebraska Center for Energy Sciences Research (NCESR), Cycle 13
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In the production of alcohol-based disinfectants in ethanol plants, research suggests that the process stream generated by the distillation column may require further treatment due to higher concentrations of acetaldehyde and acetal. Addition of a second distillation column could be a potential method for addressing impurities.
Using alcohol-based disinfectants is an effective method for preventing the spread of COVID-19. However, nontraditional manufacturers of alcohol-based disinfectants, such as ethanol plants, need to undergo additional treatment to curb their impurities to limits set by the Food and Drug Association (FDA) to produce alcohol-based disinfectants. To transform them to disinfectant-grade alcohol, 17 process streams in a dry-mill ethanol plant were analyzed to determine the quality parameters for acetaldehyde, acetal, propanol, methanol, and water, including chemical oxygen demand, total suspended solids, and nutrients. Results suggest that the process stream generated by the distillation column requires further treatment because the acetaldehyde and acetal concentrations are significantly higher than the impurity limit set by the FDA. The addition of a second distillation column could be a potential method for addressing impurities and it will have minimal influence on hazardous air pollutant generation and water use.
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