Hydrothermal decomposition of alkali lignin in sub- and supercritical water

Hanna Pińkowska , Paweł Wolak , Adrianna Złocińska

Abstract

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.
Author Hanna Pińkowska (EaE / IChaFT / DChT)
Hanna Pińkowska,,
- Department of Chemical Technology
, Paweł Wolak (EaE / IChaFT / DChT)
Paweł Wolak,,
- Department of Chemical Technology
, Adrianna Złocińska (EaE / IChaFT / DChT)
Adrianna Złocińska,,
- Department of Chemical Technology
Journal seriesChemical Engineering Journal, ISSN 1385-8947, (A 45 pkt)
Issue year2012
Vol187
Pages410-414
Publication size in sheets0.4
Keywords in EnglishAlkali lignin, Subcritical water, Supercritical water, Hydrothermal decomposition, Phenolic compounds, Biochar
DOIDOI:10.1016/j.cej.2012.01.092
Languageen angielski
Score (nominal)40
Citation count*55 (2016-05-02)
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