Granulation: A novel method to improve the bulk density and flowability of distillers grains with solubles by ProQuest


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                                                     A novel method to improve the
                                                     bulk density and flowability of
                                                     distillers grains with solubles
                                                     By Dr. Klein Ileleji

                                                     Despite the challenges of handling, advancements are
                                                     being made in the quality characterization and monitoring
                                                     of this essential byproduct.

                                                     T      he growth in fuel ethanol
                                                            production has dramatically
                                                     increased the production of dis-
                                                                                                    overseas market, which commands
                                                                                                    a large supply of DDGS, is impor-
                                                                                                    tant. The export market makes
                                                     tillers dried grains with solubles             long-distance DDGS transport to
                                                     (DDGS), a granular bulk product                export markets important to the
     In the News                                     obtained from the nonfermentable               ethanol industry — especially as
                                                     residues of corn during ethanol                ethanol production increases to
     Osabe Bio Energy signs contract                 bioprocessing using the dry grind              meet the Renewable Fuels Standard
     with Land O’ Lakes Purina                       production process. For every                  II (RFS2) mandate (15 billion gal-
         Osage Bio Energy has signed a con-          bushel of corn converted into eth-             lons/year of corn ethanol).
     tract with Land O’Lakes Purina Feed to          anol — a third which constitutes
     market its barley protein meal (BPM), a
                                                     the unfermentables — is dried and              Problems in DDGS transport
     coproduct of its ethanol bio-processing
                                                     sold as DDGS. Since DDGS is                       Flowability of DDGS has been
     operation. Osage Bio Energy’s first plant,
     Appomattox Bio Energy, located in
                                                     primarily used as a feed ingredient            cited as one of the major hurdles
     Hopewell, VA, is the first commercial scale     for livestock diet rations (beef and           to expanding existing markets
     barley-to-ethanol processing plant in the       diary cattle, swine and poultry),              and developing new markets for
     United States.                                  most plants are set up to produce              DDGS. Two Class A carriers that
         A coproduct derived from processing         the dried coproducts. Once cre-                were allowing DDGS transport
     barley into ethanol, BPM is a new protein-      ated, they are shipped via truck or            in their cars no longer accept
     rich animal feed ingredient. The innovative     rail for use by distant customers.             DDGS; and exporters in the
     process design of Osage Bio Energy’s plant          In the United States limits have           Pacific Northwest refuse to handle
     includes a specialized milling technique that   been placed on
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