| 초록 |
Lignin which is a major material consisting of lignocellulosic biomass is generated from industrial processes such as cellulosic bio-alcohol production or pulp production. The amount of so-called technical lignin generated from industrial processes is estimated to be about 7 million tons/year. Lignin has received considerable R&D attentions due to its great potential for the production of biofuels or valuable biochemicals. It is important to consider major properties of lignin in the design of an effective process of fuel or chemical production. In this work, technical lignin materials obtained from concentrated sulfuric acid hydrolysis (CSAH) and Kraft pulping (KP) processes were characterized to understand their properties. The characterization was carried out by proximate, ultimate, TG/DTG, FT-IR, XRD, GPC, and nitrobenzene oxidation. The CSAH lignin was revealed to have different properties from the KP lignin. |
