Performance, optimization, and mechanism of nitric oxide removal by thiourea dioxide/FeIIEDTA reaction systems

Feiqiang He; Xinyu Zhu; Xianchun Chen; Jianhua Ding

doi:10.1016/j.cjche.2020.06.021

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Performance, optimization, and mechanism of nitric oxide removal by thiourea dioxide/FeIIEDTA reaction systems

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Performance, optimization, and mechanism of nitric oxide removal by thiourea dioxide/FeIIEDTA reaction systems
- Chinese Journal of Chemical Engineering Vol. 28, Issue 11, Pages: 2918-2927(2020)
- Affiliations：
  
  State Key Laboratory for Nuclear Resources and Environment, School of Chemistry, Biology and Materials Science, East China University of Technology,Nanchang,China,330013
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.06.021
  CLC：
- Published：2020
- Accepted：
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Feiqiang He, Xinyu Zhu, Xianchun Chen, Jianhua Ding. Performance, optimization, and mechanism of nitric oxide removal by thiourea dioxide/FeIIEDTA reaction systems[J]. Chinese Journal of Chemical Engineering, 2020, 28(11): 2918-2927.
DOI：

Feiqiang He, Xinyu Zhu, Xianchun Chen, Jianhua Ding. Performance, optimization, and mechanism of nitric oxide removal by thiourea dioxide/FeIIEDTA reaction systems[J]. Chinese Journal of Chemical Engineering, 2020, 28(11): 2918-2927. DOI： 10.1016/j.cjche.2020.06.021.

摘要

Abstract

In this work

a new innovative absorption system containing both thiourea dioxide (TD) and Fe

Ⅱ

EDTA was used to NO removal. The independently influences of O

volume concentration

TD concentration

original pH value and absorbent temperature on NO removal in bubbling device were examined preliminarily. The results revealed that the NO removal efficiency firstly increased and then decreased with the increasing of the three independent variables (O

volume concentration

TD concentration and temperature). However

the NO removal efficiency monotonously increased to some extent with pH value increasing from 6.5 to 10.5. In addition

the respective effects of the four variables and the interactive function of them on NO removal were checked with the response surface methodology (RSM) by central composite design (CCD). The calculative model showed that pH value possessed a main positive independent impact on NO removal. Furthermore

the interactive effects between any two factors were expounded by the 3D surface and counter plots. Finally

the optimum absorption conditions for the maximum NO removal at 94.3% experimentally and

95.8% statistically were obtained in O

volume content of 6.0%

TD concentration of 0.02 mol·L

-1

original pH value of 10.5 and absorption temperature of 42 ℃.

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Related Institution

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