Absorption kinetics of NO from simulated flue gas using Fe(II)EDTA solutions

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49 引文 斯高帕斯(Scopus)

摘要

The absorption of NO encountering flue gases in aqueous solutions of Fe(II)EDTA was determined using a semi-batch stirred tank with a plane gas-liquid interface at 50 °C. The concentrations of NO, SO2 and O2 in the feeding stream were 300-800 ppm, 500-2200 ppm and 0-20%, respectively. The pH value of the Fe(II)EDTA solutions varied from 3 to 11. The concentrations of Fe(II)EDTA were maintained between 0.01 and 0.05 M. Experiments were performed to evaluate the effect of operating parameters on the NO absorption rate, the reaction kinetics of the reactants in gas and liquid phases, and the effect of competition between various reactants on the mass transfer rate in the NO removal system. Results indicate that the average reaction rate constant is 3.70 × 107 M-1 s-1. Adding NaOH does not increase the absorption capability of Fe(II)EDTA. The presence of O2 decreases the NO absorption rate with Fe(II)EDTA. The absorption rate of NO with Fe(II)EDTA decreases at low concentrations of SO2, but increases at high concentrations.

原文English
頁(從 - 到)300-306
頁數7
期刊Process Safety and Environmental Protection
87
發行號5
DOIs
出版狀態Published - 2009 九月 1

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Safety, Risk, Reliability and Quality

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