Acid purification of product from alkaline peroxide processing of nonwoody lignocellulosic substrates
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United States of America Patent
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Aug 22, 1989
Grant Date -
N/A
app pub date -
Apr 15, 1988
filing date -
Apr 15, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved process of purifying the product from an alkaline peroxide treatment process for delignifying and bleaching nonwoody lignocellulosic agricultural residues comprising, optionally washing with water, then lowering and maintaining the pH of the substrate at less than about pH 3.0, then washing sufficiently to remove residual chemicals, separating the product from the wash liquid and, optionally, drying the product.
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