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Characterization of lignin residues obtained by various pretreatment methods

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    강원대학교 산림과학연구소 학술대회 바로가기
  • 통권
    KNU IFS 2018 Annual International Symposium of Institute of Forest Science (2018.09)바로가기
  • 페이지
    pp.99-99
  • 저자
    Jin-Ho Seo, Hyung Won Lee, Hanseob Jeong, Cheol-Soon Choi, Jin-Ho Bae, Yong Sik Kim
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A450211

원문정보

초록

영어
Lignin is the second most abundant natural polymers and sustainable resource obtained as a co-product from either the pulping industry or the bioethanol production using the lignocellusic biomass. There are various pretreament processes using lignocellulosic biomass, among which kraft and sulfite pulping are the dominant processes to obtain lignin as a co-product. However, lignin has significantly different physical and chemical properties depending on the pretreatment process. Therefore, for the efficient utilization of lignin, characteristics of lignin must be clearly analyzed. In this study, four extracted lignins from different resources, hardwood kraft lignin (L1), hardwood supercritical water oxidation lignin (L2), silver grass steam-explosion lignin (L3), and commercial lignin (L4), were subjected to several analyses to characterize their thermal as well as chemical structural properties. L1 revealed relatively low value of 1430 g/mol (Mn) and 4.0 (PDI) but the remaining three lignins showed similar molecular weights. The methoxyl group contents of four lignins L1 to L4 were 4.0 mmol/g, 3.1 mmol/g, 0.8 mmol/g, and 1.6 mmol/g, respectively. As results of DFRC analysis, L4 was found to have only quaiacyl type lignin, confirmed to be extracted from softwood. The FT-IR spectra of four lignins were very similar. Additional chemical structures of lignins such as phenolic hydroxyl and aliphatic hydroxyl content were investigated by 1H NMR. Moreover, TGA/DSC was conducted to analyze thermal stabilities and degradation behavior of the lignins.

키워드

Lignin Characterization Molecular weight Methoxyl group DFRC analysis

저자

  • Jin-Ho Seo [ Division of Forest Material Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, ]
  • Hyung Won Lee [ Division of Wood Chemistry Research, National Institute of Forest Science, Seoul, 02455, Republic of Korea ]
  • Hanseob Jeong [ Division of Wood Chemistry Research, National Institute of Forest Science, Seoul, 02455, Republic of Korea ]
  • Cheol-Soon Choi [ Division of Forest Material Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University ]
  • Jin-Ho Bae [ Division of Forest Material Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University ]
  • Yong Sik Kim [ Division of Forest Material Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    강원대학교 산림과학연구소 [Institute of Forest Science Kangwon National University]
  • 설립연도
    1975
  • 분야
    농수해양>임학
  • 소개
    강원대학교부설산림과학연구소(이하 “연구소”라 한다)는 산림에 관한 제반 학술적 연구를 통하여 산림자원의 효용을 밝히고 임업 및 임산업의 발전에 기여함을 목적으로 한다.

간행물

  • 간행물명
    강원대학교 산림과학연구소 학술대회
  • 간기
    부정기
  • 수록기간
    2017~2024
  • 십진분류
    KDC 526 DDC 634

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