Back to Search
Start Over
Glycerin, a Biodiesel By-Product with Potentiality to Produce Hydrogen by Steam Gasification
- Source :
- Energies, Vol 8, Iss 11, Pp 12765-12775 (2015)
- Publication Year :
- 2015
- Publisher :
- MDPI AG, 2015.
-
Abstract
- This work investigates the possibility of providing a use to one of the major byproducts generated during biodiesel processing: glycerin. In particular, the steam gasification of water/glycerin mixtures is studied, analysing the influence of temperature (range 600–900 °C), inlet flow rate (0.5–3 mL·min−1) and water/glycerin ratio (6–12 wt/wt, %) on the gas composition (H2, CO, CH4 and CO2), higher heating value, and generated power. In general, a more diluted water/glycerin mixture is more interesting in order to provide a higher fraction of hydrogen in the gas produced, although it also involves a decrease in the power obtained. Higher temperatures cause a greater contribution of water gas and water gas shift reactions in all cases, thus increasing the H2 proportion of the gas. Finally, a greater inlet flow rate increases gas production, but decreases the hydrogen proportion.
- Subjects :
- glycerin
steam gasification
synthesis gas
hydrogen
Technology
Subjects
Details
- Language :
- English
- ISSN :
- 19961073
- Volume :
- 8
- Issue :
- 11
- Database :
- Directory of Open Access Journals
- Journal :
- Energies
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.b3e9bde1292145b8867cea85718a2ef4
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/en81112339