Ultrasonic Pretreatment of Corn Slurry in Batch and Continuous Systems

dc.contributor.author Raman, D. Raj
dc.contributor.author Grewell, David
dc.contributor.author van Leeuwen, Johannes
dc.contributor.author Raman, D. Raj
dc.contributor.author Dunn, Larson
dc.contributor.author van Leeuwen, Johannes
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T03:46:10.000
dc.date.accessioned 2020-06-29T22:35:32Z
dc.date.available 2020-06-29T22:35:32Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2009
dc.date.embargo 2012-12-07
dc.date.issued 2009-06-01
dc.description.abstract <p>The effects of ultrasonication of corn slurry, on particle size distribution and enzymatic hydrolysis was studied for the dry-grind mill ethanol industry. Two independent ultrasonic experiments were conducted at a frequency of 20 kHz; in batch and continuous systems. The ground corn slurry (33% m/v) was pumped at flow rates 10-28 L/min in continuous flow experiments, and sonicated at constant amplitude (20µmpeak-to-peak(p-p)). Ultrasonic batch experiments were conducted at varying amplitudes of 192-320µmp-p. After ultrasonication, StargenTM001 enzyme was added to the samples and a short 3h hydrolysis followed. The treated samples were found to yield 2-3 times more reducing sugar compared to the control (untreated) samples. In terms of energy density, the batch ultrasonic system was found to deliver 25-times more energy than the continuous flow systems. Although the experiments conducted in continuous system released less reducing sugar than the batch system, the continuous system was more energy efficient. The particle size of the sonicated corn slurry (both batch and continuous) was reduced relative to the controls (without treatment). The reduction of particle size was directly proportional to the energy input during sonication. The study suggests that both batch and continuous flow ultrasonic systems enhances enzymatic hydrolysis yield, reduces particle size of corn slurry and could be a potential effective pretreatment for corn slurry.</p>
dc.description.comments <p>This is an ASABE Meeting Presentation, Paper No. <a href="http://elibrary.asabe.org/abstract.asp?aid=27368&t=3&dabs=Y&redir=&redirType=" target="_blank">097420</a>.</p>
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/58/
dc.identifier.articleid 1059
dc.identifier.contextkey 3522318
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/58
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/626
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/58/Raman_2009_UltrasonicPretreatmentCorn.pdf|||Sat Jan 15 01:00:39 UTC 2022
dc.source.uri 10.13031/2013.27368
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Environmental Engineering
dc.subject.keywords Civil Construction and Environmental Engineering
dc.subject.keywords Corn slurry
dc.subject.keywords ultrasonics
dc.subject.keywords enzymatic hydrolysis
dc.subject.keywords particle size
dc.subject.keywords batch and continuous systems
dc.title Ultrasonic Pretreatment of Corn Slurry in Batch and Continuous Systems
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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