Any substance such as oxygen and chlorine , that can accept electrons. When oxygen or chlorine is added to wastewater, organic substances are oxidized. These oxidized organic substances are more stable and less likely to give off odors or to contain disease bacteria.
(oxidant) a substance that oxidizes another substance by removing electrons from it. Oxidizing agents cause other substances to be oxidized in chemical reactions while they themselves are reduced. For example, nitrate ion is an oxidizing agent in the following reaction: Cu(s) + 4 H+(aq) + 2 NO3-(aq) Cu2+(aq) + 2 H2O() + 2 NO2(g) Copper gets oxidized (its oxidation number goes from 0 to +2) while the nitrogen gets reduced (from +5 in nitrate to +4 in nitrogen dioxide).
A compound that causes oxidation, thereby itself becoming reduced. pH : The negative logarithm of the hydrogen ion activity (less precisely, concentration) as determined by indicators or electrometric means; used as a measure of the acidity or alkalinity of a solution.
A substance that oxidizes some other species and is itself reduced. (Segal, 962) Ozone (O3), is a very powerful oxidizing agent, initiating chemical oxidation-reduction reactions with other substances.