Effect of Ultrasonic Pretreatment on Methane Production Potential from Corn Ethanol Coproducts

dc.contributor.author Wu-Haan, Wei
dc.contributor.author Burns, Robert
dc.contributor.author Grewell, David
dc.contributor.author Moody, Lara
dc.contributor.author Hearn, Cody
dc.contributor.author Grewell, David
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T07:34:10.000
dc.date.accessioned 2020-06-29T22:38:52Z
dc.date.available 2020-06-29T22:38:52Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2010
dc.date.embargo 2013-03-21
dc.date.issued 2010-01-01
dc.description.abstract <p>This article addresses the biochemical methane potential (BMP) production from anaerobic digestion of corn-ethanol coproducts including dried distiller grain with solubles (DDGS), distiller's wet grains (DWG), thin stillage, and condensed distiller's solubles (CDS) as well as evaluating the effects of ultrasonic pretreatment on methane production from these feedstocks. Ultrasonic pretreatment was applied with three amplitude settings of 33% (52.8 µmpp), 66% (105.6 µmpp), and 100% (160 µmpp) as well as five time settings (10, 20, 30, 40, and 50 s) to each of the four coproducts prior to conducting benchtop BMP trials. Ultrasonic pretreatment reduced mean particle size of DDGS and DWG by 45% and 43%, respectively. Without ultrasound pretreatment, CDS had the highest methane production potential (407 mL g-1 VS added) compared to the other coproducts. Ultrasonic pretreatment of DWG co-products (DDGS and DWG) resulted in greater increases in methane production than on liquid coproducts (CDS and thin stillage). Methane yields were increased by 25% and 12% for the ultrasound pretreated DDGS and DWG, respectively, compared with untreated samples. An energy balance for the DWG, thin stillage, and CDS coproducts indicated that ultrasonic pretreatment required more energy than was generated by the process in terms of additional biogas production. However, an energy balance for ultrasonic pretreatment of DDGS provided 70% more energy than was required to operate the ultrasonic unit.</p>
dc.description.comments <p>This article is from <em>Transactions of the ASABE </em>53, no. 3 (2010): <a href="http://elibrary.asabe.org/abstract.asp?aid=30071&t=3&dabs=Y&redir=&redirType=" target="_blank">883–890</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/320/
dc.identifier.articleid 1605
dc.identifier.contextkey 3939515
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/320
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1074
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/320/2010_WuHaanW_EffectUltrasonicPretreatment.pdf|||Fri Jan 14 23:34:50 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Biochemical methane potential (BMP)
dc.subject.keywords Corn-ethanol coproducts
dc.subject.keywords Dry distillers grains with solubles (DDGS)
dc.subject.keywords Methane
dc.subject.keywords Ultrasonic
dc.title Effect of Ultrasonic Pretreatment on Methane Production Potential from Corn Ethanol Coproducts
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 5c74e8c8-30d2-4f0c-b311-91c8c467961f
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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