Degradation of glycerol using hydrothermal process
2011; Elsevier BV; Volume: 102; Issue: 19 Linguagem: Inglês
10.1016/j.biortech.2011.06.066
ISSN1873-2976
AutoresLailatul Qadariyah, Mahfud Mahfud, Sumarno Sumarno, Siti Machmudah, Wahyu Diono, Mitsuru Sasaki, Motonobu Goto,
Tópico(s)Catalysis for Biomass Conversion
ResumoSub-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.
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