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Simultaneous purifying of Hg, SO, and NOx from flue gas by Fe/HO: the performance and purifying mechanism. | LitMetric
Hg, SO, and NOx result in heavily global environmental pollution and serious health hazards. Up to now, how to efficiently remove mercury with SO and NOx from flue gas is still a tough task. In this study, series of high oxidizing Fenton systems were employed to purify the pollutants. The experimental results showed that Fe/HO was more suitable to purify Hg than Fe/HO and Cu/HO The optimal condition includes Fe concentration of 0.008 mol/L, Hg inlet concentration of 40 μg/m, solution temperature of 50 °C, pH of 3, HO concentration of 0.7 mol/L, and O percentage of 6%. When SO and NOx were taken into account under the optimal condition, Hg removal efficiency could be enhanced to 91.11% while the removal efficiency of both NOx and SO was slightly declined, which was consistent to the analysis of purifying mechanism. The removal efficiency of Hg was stimulated by accelerating the conversion of Fe to Fe, which resulted from the existence of SO and NOx. The results of this study suggested that simultaneously purifying Hg, SO, and NOx from flue gas is feasible.
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