A method of treating exhaust gases is described comprising the introduction of a treatment composition including or comprising a micelle encapsulating compound. A preferred embodiment the treatment comprises by volume; from about 4 to about 40 parts of an alkoxylated C<SUB>16</SUB>-C<SUB>18</SUB> tertiary amine surfactant, from about 1 to about 15 parts of at least one carboxylic acid having from 4 to 16 carbon atoms; about 1 to 6 parts of at least one of a C<SUB>6</SUB>-C<SUB>14</SUB> alcohol, from 0 to 10 parts of a C<SUB>4 </SUB>and lower alcohol, with the balance being water to create a total of about 100 parts by volume. The treatment composition may be introduced into a confined flow path for exhaust gases at a rate of 0.1 to 6% although a range above and below that may be suitable. The invention also extends to a system for treating exhaust gases comprising a confined flow path for the exhaust gases and an application arrangement for applying a treatment composition comprising or including a micelle encapsulating surfactant.
