Issue 1, 2010

Characterization of CO2 precipitated Kraft lignin to promote its utilization

Abstract

Converting pulp mills into forest biorefineries to produce biopower and biomaterials can decrease their environmental impact and increase feasibility at the same time. One of the key challenges to reach this goal is the recovery of lignin from process streams for subsequent utilization in a variety of innovative green processes. This study examines the fundamental chemical structure of lignin recovered from Kraft pulping streams by an acid precipitation/washing methodology. Functional group analysis and molecular weight profiles were determined by NMR and SEC with promising results for future conversions; such as low hydroxyl (oxygen) contents and low molecular weights (∼3000 g mol−1).

Graphical abstract: Characterization of CO2 precipitated Kraft lignin to promote its utilization

Article information

Article type
Communication
Submitted
08 Jul 2009
Accepted
25 Sep 2009
First published
14 Oct 2009

Green Chem., 2010,12, 31-34

Characterization of CO2 precipitated Kraft lignin to promote its utilization

M. Nagy, M. Kosa, H. Theliander and A. J. Ragauskas, Green Chem., 2010, 12, 31 DOI: 10.1039/B913602A

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