Methods for valorization of lignin-rich solids from anaerobic digestate

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United States of America

PATENT NO 12162786
APP PUB NO 20230357065A1
SERIAL NO

17781751

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A liquid suspension of lignin-rich microparticles can be recovered from anaerobic digestion of ruminant animal manure. This has similar particle size distribution to that obtained from anaerobic digestion of steam pretreated lignocellulosic feedstocks. This demonstrates that similar lignin-rich microparticles can also be formed biologically, in the absence of thermal treatment that melts lignin. As a consequence, given a sufficiently complete digestion, lignin-rich microparticles will be formed during anaerobic digestion of ruminant manure and of lignocellulosic feedstocks that have never been steam pretreated to temperatures above the lignin melting point. Methods for recovering and valorizing this lignin are disclosed.

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Patent Owner(s)

Patent OwnerAddress
CASAD JR ROBERT CFREDERIKSBERG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Casad,, Jr Robert C Frederiksberg, DK 5 1

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