Hydrothermal decomposition of alkali lignin in sub- and supercritical water
Hanna Pińkowska , Paweł Wolak , Adrianna Złocińska
AbstractAlkali 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.
|Journal series||Chemical Engineering Journal, ISSN 1385-8947, (A 45 pkt)|
|Publication size in sheets||0.4|
|Keywords in English||Alkali lignin, Subcritical water, Supercritical water, Hydrothermal decomposition, Phenolic compounds, Biochar|
|Citation count*||55 (2016-05-02)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.