Formation of solid sulfur by decomposition of carbon disulfide in the oxygen-lean cold plasma environment

Cheng Hsien Tsai; Wen Jhy Lee; Chuh Yung Chen; Wei Tung Liao; Minliang Shih

doi:10.1021/ie010292s

Formation of solid sulfur by decomposition of carbon disulfide in the oxygen-lean cold plasma environment

Cheng Hsien Tsai, Wen Jhy Lee, Chuh Yung Chen, Wei Tung Liao, Minliang Shih

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

In general, the conventional thermal processes for treating toxic carbon disulfide (CS₂) gas were by the oxidation of sulfur on CS₂ to form SO₂. However, this study demonstrated that by using a radio-frequency cold plasma reactor in the oxygen-lean condition (O₂/CS₂ = R = 0.6) at the applied power of 90 W, the decomposition fraction of CS₂ could reach 88.2%, and there was 76.9% of input sulfur mass from CS₂ converted into solid sulfur with the purity of 99.2%. No solid sulfur was observed for the no-oxygen (R = 0) or oxygen-rich conditions (R = 3.0). Hence, the results of this study provided an approach for sulfur recovery to reduce the emissions of both CS₂ and SO₂. In addition, the reaction mechanisms for the decomposition of CS₂ and for the formation of gaseous SO₂, CO, CO₂, and OCS in the CS₂/O₂/Ar plasma were also built up and discussed.

Original language	English
Pages (from-to)	1412-1418
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	41
Issue number	6
DOIs	https://doi.org/10.1021/ie010292s
Publication status	Published - 2002 Mar 20

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Formation of solid sulfur by decomposition of carbon disulfide in the oxygen-lean cold plasma environment",

abstract = "In general, the conventional thermal processes for treating toxic carbon disulfide (CS2) gas were by the oxidation of sulfur on CS2 to form SO2. However, this study demonstrated that by using a radio-frequency cold plasma reactor in the oxygen-lean condition (O2/CS2 = R = 0.6) at the applied power of 90 W, the decomposition fraction of CS2 could reach 88.2%, and there was 76.9% of input sulfur mass from CS2 converted into solid sulfur with the purity of 99.2%. No solid sulfur was observed for the no-oxygen (R = 0) or oxygen-rich conditions (R = 3.0). Hence, the results of this study provided an approach for sulfur recovery to reduce the emissions of both CS2 and SO2. In addition, the reaction mechanisms for the decomposition of CS2 and for the formation of gaseous SO2, CO, CO2, and OCS in the CS2/O2/Ar plasma were also built up and discussed.",

author = "Tsai, {Cheng Hsien} and Lee, {Wen Jhy} and Chen, {Chuh Yung} and Liao, {Wei Tung} and Minliang Shih",

year = "2002",

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doi = "10.1021/ie010292s",

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T1 - Formation of solid sulfur by decomposition of carbon disulfide in the oxygen-lean cold plasma environment

AU - Tsai, Cheng Hsien

AU - Lee, Wen Jhy

AU - Chen, Chuh Yung

AU - Liao, Wei Tung

AU - Shih, Minliang

PY - 2002/3/20

Y1 - 2002/3/20

N2 - In general, the conventional thermal processes for treating toxic carbon disulfide (CS2) gas were by the oxidation of sulfur on CS2 to form SO2. However, this study demonstrated that by using a radio-frequency cold plasma reactor in the oxygen-lean condition (O2/CS2 = R = 0.6) at the applied power of 90 W, the decomposition fraction of CS2 could reach 88.2%, and there was 76.9% of input sulfur mass from CS2 converted into solid sulfur with the purity of 99.2%. No solid sulfur was observed for the no-oxygen (R = 0) or oxygen-rich conditions (R = 3.0). Hence, the results of this study provided an approach for sulfur recovery to reduce the emissions of both CS2 and SO2. In addition, the reaction mechanisms for the decomposition of CS2 and for the formation of gaseous SO2, CO, CO2, and OCS in the CS2/O2/Ar plasma were also built up and discussed.

AB - In general, the conventional thermal processes for treating toxic carbon disulfide (CS2) gas were by the oxidation of sulfur on CS2 to form SO2. However, this study demonstrated that by using a radio-frequency cold plasma reactor in the oxygen-lean condition (O2/CS2 = R = 0.6) at the applied power of 90 W, the decomposition fraction of CS2 could reach 88.2%, and there was 76.9% of input sulfur mass from CS2 converted into solid sulfur with the purity of 99.2%. No solid sulfur was observed for the no-oxygen (R = 0) or oxygen-rich conditions (R = 3.0). Hence, the results of this study provided an approach for sulfur recovery to reduce the emissions of both CS2 and SO2. In addition, the reaction mechanisms for the decomposition of CS2 and for the formation of gaseous SO2, CO, CO2, and OCS in the CS2/O2/Ar plasma were also built up and discussed.

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Formation of solid sulfur by decomposition of carbon disulfide in the oxygen-lean cold plasma environment

Abstract

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