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Modification of acid hydrolysis lignin for value-added applications by microniz...

Krutov, Stepan M.; Evtuguin, Dmitry V.; Ipatova, Elena V.; Santos, Sonia A. O.; Sazanov, Yurii N.

Technical hydrolysis lignin (THL) was micronized by grinding in a rotary-jet mill to obtain a fraction of approximately 5 mm. Both initial and milled THLs were liquefied by thermal alkaline treatment at 220 degrees C for 2 h. Upgraded THLs that were nonmilled (L1) and milled (L2) were desalted by treatment with cation-exchanged resin and were dried. Micronization affected the course of hydrothermal alkaline tre...


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