Hydrodynamic separation of grain and stover components in corn silage
- 78 Downloads
Mixing fresh silage in water resulted in partial segregation of grain from stover. Grain concentration was 75% in the sunk material when silage was relatively dry (64% moisture content [MC]) and 41% when silage was relatively wet (74% MC). Partial drying to remove 20 percentage units of moisture prior to water separation increased grain concentration to 92%, and complete drying increased grain concentration to 99%. Sieving without drying followed by water separation resulted in a grain concentration of 79%. A byproduct of water separation is a large amount of soluble and deposited fine particles in the effluent: 18% of original dry matter after one separation, and between 21 and 26% after eight separations. In an industrial setting, hydrodynamic separation of silage with minimal pretreatment could provide a feedstock with a high concentration of grain (75–80%). In a laboratory setting, hydrodynamic separation with prior oven drying could provide a method to separate grain from stover in corn silage by reaching a grain concentration higher than 99%.
Index EntriesCorn stover grain separation silage
Unable to display preview. Download preview PDF.
- 1.Richey, C. B., Liljedhal, J. B., and Lechtenberg, V. L. (1982), Trans. ASAE 25(4), 834–839, 844.Google Scholar
- 2.Jenkins, B. M. and Sumner, H. R. (1986), Trans. ASAE 29(3), 824–836.Google Scholar
- 4.Bilanski, W. K., Jones, D. K., and Mowat, D. N. (1986), Trans. ASAE 29(5), 1188–1192.Google Scholar
- 5.Corn Refiners Association. (1996), Corn Oil. 4 th Edition. Corn Refiners Association, Washington, DC.Google Scholar
- 6.Gustafson, R. J. and Hall, G. E. (1972), Trans. ASAE 15(3), 523–525.Google Scholar
- 7.Pitt, R. E. (1983), Trans. ASAE 26(5), 1522–1527, 1532.Google Scholar
- 8.ASAE. (2002), Moisture Measurement—Forages. ASAE S358.2. Standards, 49th Edition. American Society of Agricultural Engineers, St. Joseph, MI.Google Scholar
- 9.ASTM. (2003), Standard Test Method for Specific Gravity of Soil Solids by Gas Pycnometer. Designation D5550-00. Volume 04.08. American Society for Testing Materials, accessed at Website: www.astm.org.Google Scholar
- 10.Shinners, K. J., Jirovec, A. G., Shaver, R. D., and Bal, M. (2000), Appl. Eng. Agr. 16(4), 323–331.Google Scholar
- 11.ASAE. (2002), Method of Determining and Expressing Particle Size of Chopped Forage Material by Screening. ANSI/ASAE S424.1. Standards, 49 th Edition. American Society of Agricultural Engineers, St. Joseph, MI.Google Scholar
- 12.Steel, R. G. D., Torrie, J. H., and Dickey, D. A. (1996), Principles and Procedures of Statistics: A Biometrical Approach. 3 rd Edition. McGraw Hill, New York, NY.Google Scholar