Characterization of CO2 precipitated Kraft lignin to promote its utilization

被引:87
作者
Nagy, Mate [1 ]
Kosa, Matyas [1 ]
Theliander, Hans [2 ]
Ragauskas, Arthur J. [1 ]
机构
[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA
[2] Chalmers, SE-41296 Gothenburg, Sweden
关键词
BLACK LIQUOR; CONSEQUENCES; EXTRACTION; PULP;
D O I
10.1039/b913602a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 (similar to 3000 g mol(-1)).
引用
收藏
页码:31 / 34
页数:4
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