Extraction of Lignin from Hemp Shives
DOI:
https://doi.org/10.17770/etr2013vol1.798Keywords:
hemp shives, steam explosion, lignin, extractionAbstract
Industrial hemp contains 65-80% shives of the stalk and are composed of libriform fibres who are high lignin content. Steam explosion (SE) auto-hydrolysis is a simple treatment of biomass (agricultural waste, logging residues, etc.) by saturated only steam without any additional reagents, usually at pressures 32 atmospheres. This is the basic method how to produce lignin without any dash. Analogy if there is the most sever SE and more are destroyed hemp shives, the more lignin can extract. The aim is to definite the bulk volume, content of lignin in 'Belobrzesky' hemp variety depending on the SE treatment factor, doing extraction with H2O and NaOH 0.4% and compare without going content of hemp shives lignin.Downloads
References
Andzs, M., Riga Technical university, Masters degree work (2010).
Gargulak, J.D., Lebo, S.E., 2000. Commercial use of lignin-based materials. In: Glasser, W.G., Northey, R.A., Schultz, T.P. (eds.). Lignin: Historical, Biological, and Materials Perspectives. ACS Symposium Series. American Chemical Society, p. 307.
Gravitis J.1996. Material Separation Technologies and Zero Emissions. Proc. Second Annual UNU World Congress on Zero Emissions, Chattanooga, Tennessee, May 29-31, 168-173.
Gravitis, J., Abolins,J., Kokorevics, A. 2008 Integration of biorefinery clusterstowards zero emissions, Environmental Engineering and Management Journal, 7(5):569-577.
Gravitis, J., Abolins, J., Tupciauskas, R., Veveris, A. 2010. Lignin from Steam-exploded Wood as Binder in Wood Composites. Journal of Environmental Engineering and Landscape Management, Technika, Vilnius, 18(2): 75-84.
Kaleine, A., Veveris, A., Polmanis. G., Erins, P., Belickis. J., Jakobsons, K., Kuzmane, V., Polmanis. G., Kaleine. A., Erins. P., 1990. Journal Wood chemistry, Latvia, Riga, N.3.100. (In Russian).
Liepins. G., 1990. Lignin. Journal Wood chemistry, Latvia, Riga, N.3.106. (In Russian).
Zakis, G., Basic of wood chemistry, SIA „Tipografija Perse”, [in Latvian], Riga, 2008, -p.34.
