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Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical

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  • Title:
    Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical
  • Author: Li, Jian
  • Description: Systems and methods for purifying wood pulp by caustic-borate extraction. The systems and method include a method for recovering both the caustic and borate compounds from the resultant hemicaustic effluent, so that they may be recycled and re-used. Efficient recovery of these components is enabled by a nanofiltration system that has one or more alkali-resistant nanofiltration membranes.
  • Creation Date: 2010
  • Language: English
  • Source: USPTO Issued Patents
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