Conversion of Carbonyl Sulfide Using a Low-Temperature Discharge Approach

Cheng-Hsien Tsai; Ping-Szu Tsai; Chih-Ju G. Jou; Wei-Tung Liao

doi:10.4209/aaqr.2007.03.0013

Conversion of Carbonyl Sulfide Using a Low-Temperature Discharge Approach

Cheng-Hsien Tsai ¹, Ping-Szu Tsai¹, Chih-Ju G. Jou², Wei-Tung Liao³

¹Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, 415 Chien-Kung Road, Kaohsiung 807, Taiwan
²Department of Safety, Health and Environmental Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 811, Taiwan
³Department of Chemical and Material Engineering, Southern Taiwan University of Technology, Tainan 710, Taiwan

Received: December 29, 2016
Revised: May 31, 2007
Accepted: May 31, 2007
Download Citation: ||https://doi.org/10.4209/aaqr.2007.03.0013

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Cite this article:
Tsai, C.H., Tsai, P.S., Jou, C.J.G. and Liao, W.T. (2007). Conversion of Carbonyl Sulfide Using a Low-Temperature Discharge Approach. Aerosol Air Qual. Res. 7: 251-259. https://doi.org/10.4209/aaqr.2007.03.0013

ABSTRACT

Carbonyl sulfide (COS) are usually yielded from the petrifaction industry or steel-making plants. In this study, a low-temperature radio-frequency (RF) plasma approach was used to destruct COS for removing sulfur. The results showed that at an inlet O₂/COS molar ratio of 3, the removal efficiency of COS reached 98.4% at 20 W and 4000 N/m², with the major product being SO₂ with small amounts of sulfur deposition. The removal efficiency of COS was lower in the H₂-containing condition than in the O₂-containg one. However, when H₂ was added into the COS/N₂ mixtures, the products, including major elemental sulfur with CS₂ as a minor product, were easily collected and recovered.

Keywords: RF plasma; Acid rain; Sulfur; Carbonyl sulfide; Destruction