Pretreatment of densified biomass using liquid ammonia and systems and products related thereto

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10730958
APP PUB NO 20180258190A1
SERIAL NO

15916223

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Abstract

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A method to convert at least a majority of native cellulose Iβ to cellulose IIII in pretreated or untreated densified biomass is disclosed. The densified biomass (cellulosic or lignocellulosic) is pretreated with anhydrous liquid ammonia or liquid ammonia comprising a solution of at least 80% ammonia. The pretreating can be performed at a temperature from about 4° C. to about 140° C. and a pressure from about 14.7 to about 200 psi. In one embodiment, the densified cellulosic converting pretreatment process is followed by lignin extraction (LE). The total moisture content of the densified biomass and the solution is 30% or less and a weight ratio of liquid ammonia to the densified biomass is from about 0.3:1 to about 2:1. Various products and systems are also disclosed.

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Patent Owner(s)

  • BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Balan, Venkatesh Sugarland, US 21 344
Sousa, Leonardo da Costa Okemos, US 4 22

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