Journal
CHEMICAL ENGINEERING JOURNAL
Volume 187, Issue -, Pages 410-414Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.01.092
Keywords
Alkali lignin; Subcritical water; Supercritical water; Hydrothermal decomposition; Phenolic compounds; Biochar
Categories
Funding
- Ministry of Science and Higher Education of Poland [N N523 494134]
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Alkali lignin as an example of waste plant biomass was subjected in a batch reactor to decomposition in sub- and supercritical water. Hydrothermolysis of alkali lignin with relatively highmolecular-weight led to the production of phenolic compounds such as guaiacol and catechol, as well as phenol, m-cresol, p-cresols and o-cresol. Both an increase growth in conversion time and an increase in reaction temperature promoted secondary reactions: degradation of alkali lignin decomposition products, leading to, their repolymerization and carbonization. The components of the liquid fractions of products were examined by GC-MS and HPLC, whereas the solid charred post-reaction residues were analyzed by elemental analysis and FTIR. (C) 2012 Elsevier B.V. All rights reserved.
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