STUDY ON NO REMOVAL WITH FeIIEDTA/(NH4)2SO3 SOLUTION

Abstract

Abstract: The effects of (NH4)2SO3 concentration, initial FeIIEDTA concentration, gas flow rate, pH, temperature, NO concentration, and oxygen concentration in feed gas on NO removal by FeIIEDTA/ (NH4)2SO3 solution were investigated. The primary and secondary influence factors and the best process conditions were determined by orthogonal test. The results show that the influence order of different parameters on NO absorption is: the initial FeIIEDTA concentration > NO concentration in feed > temperature > oxygen concentration > feed gas flow rate > pH value > (NH4)2SO3 concentration. The optimum conditions for NO removal by FeIIEDTA/(NH4)2SO3 solution is: the initial FeIIEDTA concentration of 0.005 mol/L, NO concentration of 1072 mg/m3, 30 ℃, oxygen concentration of 4%, the gas flow rate of 800 mL/min, pH of 7, (NH4)2SO3 concentration of 0.2 mol/L. The NO removal rate reaches 92.5% and the absorption amount of NO is 3.29 mol /mol under the optimum conditions.

Key words: NO removal, absorption amount, FeIIEDTA, (NH4)2SO3, removal rate

CLC Number:

References

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