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PROCESS FOR PROCESSING A LIGNOCELLULOSIC MATERIAL

  • US 20130071900A1
  • Filed: 09/21/2012
  • Published: 03/21/2013
  • Est. Priority Date: 09/21/2011
  • Status: Abandoned Application
First Claim
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1. A method for processing a lignocellulosic material comprising the steps ofa) contacting a lignocellulosic material at a temperature in the range from equal to or more than 120°

  • C. to equal to or less than 210°

    C. with an aqueous acid solution containing one or more inorganic acids and having a pH in the range from equal to or more than 1.8 to equal to or less than 4.0 to produce a mixture containing pretreated lignocellulosic material and aqueous acid solution, having an overall pH in the range from equal to or more than 3.0 to equal to or less than 4.5; and

    b) contacting at least a portion of the mixture produced in step a) with a base to produce a neutralized mixture containing neutralized pretreated lignocellulosic material and one or more insoluble salts.

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