Method for removing nitrogen oxides using ferricion-EDTA complex

Details Method for removing nitrogen oxides using ferricion-EDTA complex Method for removing nitrogen oxides using ferricion-EDTA complex

1974-12-27

1978-03-14

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

252182, C01B 2100

Patent

active

040791181

ABSTRACT:
Industrial exhaust gas containing nitrogen oxides is treated with an aqueous solution of an iron chelate complex salt which contains essentially a sulfite salt at the time of treatment whereby nitrogen oxides which have been difficult to catch can be absorbed with a high absorbing rate even when the concentration of nitrogen oxides is low in the exhaust gas or sulfur dioxide is included in the gas, and simultaneous desulfurizing can be attained in this case. Said aqueous solution has a large absorbing capacity and may contain an ion or ions of alkali metal, alkali earth metal or ammonium.

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