Degradation of glycerol using hydrothermal process

Lailatul Qadariyah, Mahfud, Sumarno, Siti Machmudah, Wahyudiono, Mitsuru Sasaki, Motonobu Goto

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

Sub-critical or supercritical water was utilized for the degradation of glycerol in an environmentally benign reaction. The reaction was carried out in a batch reactor in the temperature range of 473-673. K, pressure of 30. MPa, and reaction time of 20-60. min. The effects of temperature and reaction time were observed. The degradation of glycerol produced acetaldehyde, acrolein, allyl alcohol and un-identified products. The highest yield of acrolein, acetaldehyde and allyl alcohol were 0.20, 7.17, 96.69. mol%, respectively. Glycerol conversion was 99.92. mol%. While acetaldehyde was formed only in sub-critical water and allyl alcohol only in supercritical water, acrolein was formed in both. The kinetics of the global reaction displayed a pseudo-first-order. The activation energy at subcritical water was 39.6. kJ/mol. Based on the results, this method could be an efficient method for glycerol degradation because the high conversion of glycerol was obtained.

Original languageEnglish
Pages (from-to)9267-9271
Number of pages5
JournalBioresource Technology
Volume102
Issue number19
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Degradation
  • Glycerol
  • Sub-critical water
  • Supercritical water

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