Process to Improve Protein Recovery in Stillage Processing Streams
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United States of America Patent
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Aug 19, 2021
app pub date -
Feb 3, 2021
filing date -
Feb 14, 2020
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Abstract
Provided is a method of processing stillage from an ethanol production process. The method comprises treating stillage comprising oil, protein, and water upstream of a separation, concentration or evaporation step with at least one organic coagulant and at least one flocculant, thereby forming treated thin stillage comprising solids which include at least a portion of the oil and protein; and clarifying the treated stillage via a solid/liquid separation process thereby forming clarified stillage and a separated solids phase comprising at least a portion of the protein from the stillage.
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