Removal of trimethylamine in gas by corona-discharge reactor

Trimethylamine, one component of malodorous gases from crematory emission, was removed by a corona-discharge reactor to apply the reactor to purificat ion of crematory emission gas. The effects of discharge current and coexist ing oxygen or water vapor on the removal efficiency of trimethylamine were investigated. Although trimethylamine was not effectively removed from nitr ogen by corona discharge, the removal efficiency was improved greatly by mi xing oxygen or water vapor. The amounts of reaction by-products generated w ere extremely large at high discharge current in the removal from a nitroge n-oxygen mixture. On the other hand, the by-products were greatly suppresse d by mixing water vapor. The deposit on the anode of the reactor was analyz ed by a thermogravimetry. As a result, trimethylamine was found on the anod e surface as the deposit of carbon compounds which have high boiling point.