Glycerin, a biodiesel by-product with potentiality to produce hydrogen by steam gasification

Suero, Silvia Roman and Cano, Beatriz Ledesma and Alvarez-Murillo, Andres and Al-Kassir, Awf and Yusaf, Talal (2015) Glycerin, a biodiesel by-product with potentiality to produce hydrogen by steam gasification. Energies, 8 (11). pp. 12765-12775.

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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.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 12 Apr 2017 02:47
Last Modified: 11 Feb 2019 00:03
Uncontrolled Keywords: glycerin; hydrogen; steam gasification; synthesis gas
Identification Number or DOI: 10.3390/en81112339

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