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Photolysis of dimethyl sulfide by microwave electrodeless discharge Lamp

Photolysis of dimethyl sulfide by microwave electrodeless discharge Lamp 2015-8-13

Chemical Technology, Beijing 100029，China)
Abstract：Photolysis of dimethyl sulfide (DMS) by microwave electrodeless discharge lamp (MEDL) was
conducted in this study. Removal efficiency decreased with increasing inlet concentration of DMS, but could be
increased to 94.3% while residence time of DMS in the photo-reactor was kept at 10 s. Direct photolysis and
indirect photo-oxidation by excited states of atomic oxygen O(1D) and radical·OH were regarded as the
contribution to DMS degradation in MEDL, especially, O(1D) played the key role of oxidative species in
mineralizing DMS to inorganic chemicals, such as SO4
2−, CO2 and H2O.
Key words：dimethyl sulfide；microwave electrodeless discharge lamp；degradation; oxidation；excited states of
atomic oxygen

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