Adsorption of methyl mercaptan on activated carbons.
Activated carbons of different origins were studied as methyl mercaptan adsorbents in wet, dry, and oxidizing conditions. The materials were characterized using adsorption of nitrogen, Boehm titration, and thermal analysis. Investigation was focused on the feasibility of the removal of methyl mercaptan on activated carbons and on the role of surface chemistry and porosity in the adsorption/oxidation processes. The results showed relatively high capacities of carbons for removal of CH3SH. The amount adsorbed depends on the surface features. Methyl mercaptan, in general, is oxidized to disulfides, which, depending on the chemistry of the carbon surface, can be converted to sulfonic acid due to the presence of water and active radicals.
Bashkova
Svetlana
S
Department of Chemistry and The International Center for Water Resources and Environmental Research of The City College of New York, New York 10031, USA.
Bagreev
Andrey
A
Bandosz
Teresa J
TJ
D000327:Adsorption; D000395:Air Pollutants, Occupational / Q000032:analysis*; D002244:Carbon / Q000737:chemistry*; D004787:Environmental Pollution / Q000517:prevention & control*; D010084:Oxidation-Reduction; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013696:Temperature
D000395:Air Pollutants, Occupational; D013438:Sulfhydryl Compounds; C005231:methylmercaptan; D002244:Carbon