Method for producing chlorine dioxide and removing chlorine dioxide using chemically impregnated zeolite

A method for reacting a fluid with chemically impregnated zeolite crystals, including the steps of:

• (a) moving the fluid through a primary bed comprising a mixture of a first type impregnated zeolite crystals and a second type of impregnated zeolite crystals, thereby producing chlorine dioxide gas, with the first type of impregnated zeolite crystals comprising zeolite crystals impregnated with sodium chlorite, and with the second type of impregnated zeolite crystals comprising zeolite crystals impregnated with one of the following impregnating agents:
• phosphoric acid, acetic acid, and citric acid;
• and
• (b) moving the fluid through a secondary bed of impregnated zeolite crystals, which are impregnated with one of the following impregnating agents:
• potassium hydroxide, sodium sulfite, sodium bisulfite, and ferrous sulfate, thereby removing at least some of the chlorine dioxide gas by chemical reaction with the secondary bed.