Hemp (Cannabis sativa L.), hemp shives are the short fibred inner woody core of the hemp plant. Hemp shives contains 65-80% of the stalk and are composed of libriform fibres who are high lignin content. Steam explosion (SE) auto-hydrolysis (also referred to as steam explosion pulping, flash auto-hydrolysis, or steam cracking) is a simple treatment of biomass (agricultural waste, logging residues, etc.) by saturated only steam without any additional reagents, usually at pressures up to 30 atmospheres. This is the only 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 sort depending on the SE treatment factor, doing extraction with H2O and NaOH 0.4% and compare with out going content of hemp shives lignin.
Keywords: biomass, hemp shives, steam explosion, lignin, extraction
Authors
Andzs M.
Department of Wood Processing, Latvia University of Agriculture, Jelgava
Veveris A.
Latvian State Institute of Wood Chemistryб Riga, Latvia
Gravitis J.
Latvian State Institute of Wood Chemistry, Riga, Latvia
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