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Wet Scrubbing Removal of Methyl Mercaptan by Peroxymonosulfate under Acidic Condition

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Abstract:

Peroxymonosulfate (PMS) was used in wet scrubbing removal of odorous gas methyl mercaptan (CH3SH) under acidic condition (pH = 2) for the first time. Even though CH3SH can hardly dissociate as CH3S− under acidic solution (pKa = 10.3), quick oxidizing reaction may occur at the gas-liquid interface by PMS alone or Co2+ activated PMS oxidation. When the gas flow is 0.5 L min-1, PMS alone can remove 94% of 60 ppm/v CH3SH. The absorption of CH3SH is the rate controlling step of the removal process, however, quick oxidizing reaction with the dissolved CH3SH(aq) molecule could improve the mass transfer of CH3SH from the gas phase into the liquid phase.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

2388-2391

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.2388

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Online since:

June 2014

Authors:

Shi Ying Yang*, Lin Yu Feng, Mei Qing Huo, Yan Li

Keywords:

Acidic Condition, Chemical Scrubbing, Cobalt, Methyl Mercaptan, Peroxymonosulfate

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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