Removal of H<sub>2</sub>S from Biogas by Iron (Fe<sup>3+</sup>) Doped MgO on Ceramic Honeycomb Catalyst using Double Packed Columns System

  • Nirattisai Rakmak Prince of Songkla University
  • Wisitsree Wiyaratn King Mongkut's University of Technology Thonburi
  • Juntima Chungsiriporn Prince of Songkla University
Keywords: H2S, Fe3 doped magnesium oxide, foam ceramic, sol-gel technique.

Abstract

Hydrogen sulfide is a toxic and corrosive in nature, gas should be safely removed from the biogas streams before subjecting into the fuel cell. Fe3+ doped magnesium oxide was synthesized using sol-gel technique and dip coating process of Fe3+ doped MgO on foam ceramic honeycomb. XRD and SEM indicate that Fe3+ in Fe3+ doped MgO on foam ceramic honeycomb catalyst is finely dispersed in the MgO support. Performance of the synthesized Fe3+ doped magnesium oxide on the honeycomb catalyst was examined for hydrogen sulfide (H2S) oxidation by double packed column scrubbers. The absorption column was used for H2S scrubbing from biogas by deionized water absorption and catalytic column was used as catalyst bed for degradation of absorbed H2S in scrubbing water. In the catalytic column, counter current flow of the scrubbing water and air through the catalyst pack was performed for H2S oxidation accompany with catalyst regeneration. System capacity for H2S removal from gas stream showed 98% constant along 3 hr testing time at room temperature.

Downloads

Download data is not yet available.

Author Biographies

Nirattisai Rakmak

Department of Chemical Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90112, Thailand

Wisitsree Wiyaratn

Department of Production Technology Educations, Faculty of Industrial Education and Technology, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand

Juntima Chungsiriporn

Department of Chemical Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90112, Thailand

Published In
Vol 14 No 1, Mar 19, 2010
How to Cite
[1]
N. Rakmak, W. Wiyaratn, and J. Chungsiriporn, “Removal of H<sub>2</sub>S from Biogas by Iron (Fe<sup>3+</sup&gt;) Doped MgO on Ceramic Honeycomb Catalyst using Double Packed Columns System”, Eng. J., vol. 14, no. 1, pp. 15-24, Mar. 2010.

Most read articles by the same author(s)