Physical Separation of Straw Stem Components to Reduce Silica

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In this paper, we describe ongoing efforts to solve challenges to using straw for bioenergy and bioproducts. Among these, silica in straw forms a low-melting eutectic with potassium, causing slag deposits, and chlorides cause corrosion beneath the deposits. Straw consists principally of stems, leaves, sheaths, nodes, awns, and chaff. Leaves and sheaths are higher in silica, while chaff, leaves and nodes are the primary source of fines. Our approach to reducing silica is to selectively harvest the straw stems using an in-field physical separation, leaving the remaining components in the field to build soil organic matter and contribute soil nutrients.

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Hess, John Richard; Thompson, David Neal; Hoskinson, Reed Louis; Shaw, Peter Gordon & Grant, D.R. April 1, 2002.

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In this paper, we describe ongoing efforts to solve challenges to using straw for bioenergy and bioproducts. Among these, silica in straw forms a low-melting eutectic with potassium, causing slag deposits, and chlorides cause corrosion beneath the deposits. Straw consists principally of stems, leaves, sheaths, nodes, awns, and chaff. Leaves and sheaths are higher in silica, while chaff, leaves and nodes are the primary source of fines. Our approach to reducing silica is to selectively harvest the straw stems using an in-field physical separation, leaving the remaining components in the field to build soil organic matter and contribute soil nutrients.

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  • 24th Symposium on Biotechnology of Fuels and Chemicals,Gatlinburg, TN,04/28/2002,05/01/2002

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  • Report No.: INEEL/CON-01-01635
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 910857
  • Archival Resource Key: ark:/67531/metadc888957

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  • April 1, 2002

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 8, 2016, 8:56 p.m.

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Hess, John Richard; Thompson, David Neal; Hoskinson, Reed Louis; Shaw, Peter Gordon & Grant, D.R. Physical Separation of Straw Stem Components to Reduce Silica, article, April 1, 2002; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc888957/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.