Method of treating lignocellulosic biomass to produce cellulose
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United States of America Patent
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Jul 16, 2002
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N/A
app pub date -
Aug 16, 2000
filing date -
Aug 16, 2000
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Abstract
A multi-function process is described for the separation of cellulose fibers from the other constituents of lignocellulosic biomass such as found in trees, grasses, agricultural waste, and waste paper with application in the preparation of feedstocks for use in the manufacture of paper, plastics, ethanol, and other chemicals. This process minimizes waste disposal problems since it uses only steam, water, and oxygen at elevated temperature in the range of 180.degree. C. to 240.degree. C. for 1 to 10 minutes plus a small amount of chemical reagents to maintain pH in the range 8 to 13. An energy recuperation function is important to the economic viability of the process.
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