Physical Properties of Moist, Fermented Corn Grain after Processing by Grinding or Milling

Blazer, Keagan J.; Shinners, Kevin J.; Kluge, Zachary A.; Tekeste, Mehari Z.; Digman, Matthew F.

doi:10.3390/agriengineering6020052

Physical Properties of Moist, Fermented Corn Grain after Processing by Grinding or Milling

Journal Article · Wed Apr 03 00:00:00 EDT 2024 · AgriEngineering

DOI:https://doi.org/10.3390/agriengineering6020052· OSTI ID:2333069

Blazer, Keagan J.; ; Kluge, Zachary A.; ;

A novel biomass production system, integrating the co-harvesting and co-storage of moist corn grain and stover, promises a reduction in delivered feedstock costs. In this innovative method, the dry grain traditionally utilized for feed or biofuel production will now be processed at a considerably greater moisture content. The adoption of this approach may necessitate a substantial redesign of existing material handling infrastructure to effectively accommodate the handling and storage of moist grain after processing by milling or grinding. A comprehensive study was conducted to quantify the physical properties of this grain after processing with a knife processor or a hammermill. The geometric mean particle size, bulk and tapped density, sliding angle, material coefficient of friction, and discharged angle of repose were quantified. Five grain treatments, either fermented or unfermented, and having different moisture contents, were used. After processing, the moist, fermented ground grain exhibited a significantly smaller particle size compared to the dry grain. Additionally, both moist processed grains resulted in a decreased bulk density and increased material sliding angle, friction coefficient, and angle of repose. The examined metrics collectively suggest that handling, mixing, and storing moist ground grain will pose significant challenges compared to conventional dry ground grain. This increased difficulty may lead to substantially higher costs, a crucial factor that must be carefully considered when evaluating the overall economics of implementing this new biomass production system using combined harvesting and storage of corn grain and stover.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: EE0008908

OSTI ID:: 2333069

Journal Information:: AgriEngineering, Journal Name: AgriEngineering Journal Issue: 2 Vol. 6; ISSN 2624-7402; ISSN AGRICJ

Publisher:: MDPI AGCopyright Statement

Country of Publication:: Switzerland

Language:: English

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