Study on Metal Chelation Adsorption of NO Using Fe(II)EDTA Solution in Power Plant

Yuan Bai; Jian Ming Xue; Zhong Hua Li

doi:10.4028/www.scientific.net/AMR.941-944.945

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 941-944Study on Metal Chelation Adsorption of NO Using...

Study on Metal Chelation Adsorption of NO Using Fe(II)EDTA Solution in Power Plant

Abstract:

The influences of concentration of metal chelation solution, pH values, the concentration of O₂ supplied by some thermal power plants in Wuxi, and the concentration of SO₃^2-on the adsorption performance were studied. The results indicated that the removal ratio improved with the increase of bulk concentration. However, when the concentration exceeded 15mmol/L, the increase rate reduced. It was found that the chelation ability enhanced with the increase of pH values as well as the decrease of oxygen concentration in the flue gas. The SO₃^2-in the solution was beneficial to improve and extend the adsorption capacity of Fe (II) EDTA. According to the FI-IR, the carboxyl in Na₂EDTA coordinated with Fe(II). XPS showed that Fe²⁺ was the main valence of Fe in Fe(II)EDTA. Through the calculation of fold peak area, the content of Fe²⁺ was 72.17%. And the existence of Fe²⁺ in the Fe(II)EDTA was pivotal for the complexation.

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Periodical:

Advanced Materials Research (Volumes 941-944)

Pages:

945-951

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.941-944.945

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Online since:

June 2014

Authors:

Yuan Bai*, Jian Ming Xue, Zhong Hua Li

Keywords:

Denitration, Fe (II)EDTA, Flue Gas, Metal Chelation, NO

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