Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical
Patent
1988-04-15
1989-08-22
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Treatment with particular chemical
162 60, 162 95, 162 96, 162 97, 162 99, 426615, 426622, 426635, 426636, 426804, 426807, D21C 916
Patent
active
048592820
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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Schumb et al., Hydrogen Peroxide, ACS Monograph Series, Chapter 9, pp. 515-547 (1955).
Gould, Biotechnology and Bioengineering, vol. 27, pp. 225-231 (1985)--"Studies on the Mechanism of Alkaline Peroxide Delignification of Agricultural Residues".
Chou Yu-Chia T.
Garrison David F.
Lewis William I.
Chin Peter
E. I. Du Pont de Nemours and Company
Evans Craig H.
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