Modeling Distillers Dried Grains with Solubles (DDGS) Mass Flow Rate as Affected by Drying and Storage Conditions

dc.contributor.author Bhadra, Rumela
dc.contributor.author Rosentrater, Kurt
dc.contributor.author Muthukumarappan, K.
dc.contributor.department Food Science and Human Nutrition
dc.contributor.department Center for Crops Utilization Research
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-19T07:35:12.000
dc.date.accessioned 2020-06-29T22:43:09Z
dc.date.available 2020-06-29T22:43:09Z
dc.date.issued 2017-01-01
dc.description.abstract <p>Ethanol production in 2015 was over 15 million gallons in the United States, and it is projected to increase in the next few years to meet market demands. With the continued growth in the ethanol industry, there has been enormous expansion in distillers grains production. Because the local market for distillers dried grains with solubles (DDGS) is often saturated, it is essential to transport DDGS long distances, across the United States and to international markets. Caking and agglomeration of DDGS particles in hoppers and other storage structures are typical during transportation. The current study deals with DDGS prepared by combining condensed distillers solubles (CDS) with distillers wet grains and then drying at varying temperatures. DDGS was stored in conical hoppers under varying ambient temperature, consolidation pressure, and time conditions. We investigated the effects of CDS (10, 15, and 20% wb), drying temperature (100, 200, and 300°C), drying time (20, 40, and 60 min), cooling temperature (0, 25, and 50°C), consolidation pressure (0, 1.72, and 3.43 kPa), and consolidation time (0, 3, and 6 days) levels on various flow parameters. To examine these factors, Taguchi’s experimental design with an L18 orthogonal array was implemented. Response surface modeling yielded mass flow rate = f(Hausner ratio, angle of repose) with R2 = 0.99, and it predicted moisture content for good, fair, and poor flow. Results showed that drying temperature, drying time, and cooling type were the main factors in predicting mass flow rate. The Johansson model for predicted mass flow rate was calibrated with experimental data, and a new parameter, compressibility factor, with a value of 0.96 g2/(min cm3), was determined to quantify the divergence of compressible and cohesive materials (such as DDGS) for free-flowing bulk solids. Thus, the predicted models may be beneficial for quantitative understanding of DDGS flow.</p>
dc.description.comments <p>This article is published as Bhadra, Rumela, Kurt A. Rosentrater, and K. Muthukumarappan. "Modeling Distillers Dried Grains with Solubles (DDGS) Mass Flow Rate as Affected by Drying and Storage Conditions." Cereal Chemistry 94, no. 2 (2017): 298-309. doi: <a href="http://dx.doi.org/10.1094/CCHEM-04-16-0114-R" target="_blank">10.1094/CCHEM-04-16-0114-R</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/851/
dc.identifier.articleid 2134
dc.identifier.contextkey 11378919
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/851
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1659
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/851/2017_Rosentrater_ModelingDistillers.pdf|||Sat Jan 15 02:12:54 UTC 2022
dc.source.uri 10.1094/CCHEM-04-16-0114-R
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Process Control and Systems
dc.title Modeling Distillers Dried Grains with Solubles (DDGS) Mass Flow Rate as Affected by Drying and Storage Conditions
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication ae6468d9-2286-48ad-9293-5cfa893ea5f3
relation.isOrgUnitOfPublication 4b6428c6-1fda-4a40-b375-456d49d2fb80
relation.isOrgUnitOfPublication ef0c8753-d288-4a4e-815f-fb800c343de8
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
File
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
2017_Rosentrater_ModelingDistillers.pdf
Size:
2.27 MB
Format:
Adobe Portable Document Format
Description:
Collections