Simultaneous absorption of SO2 and NO from flue gas with KMnO4/NaOH solutions

Chu, Hsin; Chien, Tsung Wen; Li, S. Y.

doi:10.1016/s0048-9697(00)00860-3

Cited by 212 publications

(135 citation statements)

References 16 publications

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“…Meanwhile we found that the color of solution with different urea concentrations appeared reddish-brown and brownish-black deposit was found in the solutions at the end of reaction. The following oxidative reactions proposed in literatures [2,19,32] can be used to explain the NO removal in urea + KMnO 4 solution at different urea concentrations:…”

Section: Effect Of Urea Concentrationmentioning

confidence: 99%

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Simultaneous removal of SO2, NO and Hg0 by wet scrubbing using urea + KMnO4 solution

Fang¹,

Cen²,

Wang³

et al. 2013

Fuel Processing Technology

183

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Section: Effect Of Urea Concentrationmentioning

confidence: 99%

“…So, most of the researchers have focused on the oxidation technology, and wish to efficiently remove Hg 0 , SO 2 and NO simultaneously in the WFGD. The most commonly used oxidants include K 2 S 2 O 8 [17], KMnO 4 [18,19], Fenton's reagent [20,21], NaClO 2 [12,22], O 3 [5], H 2 O 2 [23,24], ClO 2 [25] and so on.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of SO2, NO and Hg0 by wet scrubbing using urea + KMnO4 solution

Fang¹,

Cen²,

Wang³

et al. 2013

Fuel Processing Technology

183

View full text Add to dashboard Cite

“…5 conversion because it has more acidic groups than any other carbon samples. This result suggests that acidic groups play more important role than the surface area.…”

Section: Effect Of Impregnation Timementioning

confidence: 99%

“…The low solubility of NO is the main obstacle for aqueous absorption of NOx because NO generally occupies 95% NOx in flue gas. As a result, the uses of aqueous solutions of H 2 O 2 , NaClO 2 , KMnO 4 , sodium persulfate, and sonochemical oxidation processes to turn NO into soluble NO 2 , are the subjects of many studies [3][4][5][6][7][8][9][10][11][12][13][14]. However, none of these methods have been put into commercial application.…”

Section: Introductionmentioning

confidence: 99%

Effect of treatment with tartaric acid on carbon as a catalyst in the absorption of NO into the hexamminecobalt(II) solution

Long

Jia

et al. 2017

Env Prog and Sustain Energy

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Tartaric acid solution is applied to change the surface characteristics of activated carbon to improve its catalytic capability in the regeneration of Co(NH3)62+ that is used to realize the simultaneous removal of NO and SO2. The experimental results show that the best treatment condition is impregnating the carbon samples in 1.5 mol l−1 tartaric acid solution for 18 h followed by being activated at 400°C for 4 h under nitrogen atmosphere. After being treated with tartaric acid solution, the surface area of activated carbon and the acidity on its surface increase. The experiments show that the modified carbon can obtain a much higher NO removal efficiency than the original carbon. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 333–341, 2018

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“…In this way, Chu et al used KMnO 4 in basic NaOH solution while Hsin et al used NaClO 2 for removal of NO and its conversion to NO 2 (26,27). Defects of these approaches were already described as after conversion of NO to NO 2 , there is not enough time for absorption of NO 2 in the solution.…”

Section: Effect Of Initial Concentration and Sodium Hydroxide Solutiomentioning

confidence: 99%

Investigation of Photocatalytic Oxidation and Wet Absorption in a Combined System for Removal of Nitrogen Oxides

2016

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Background: One of the important achievements of the past decade was the rapid growth of industries and accordingly production of various chemical compounds.Objectives: This study presents a combined system of photocatalytic oxidation and absorption solution to remove nitrogen oxides from polluted air flow. Materials and Methods:The experimental system used in this study comprised a pollutant gas source, mixing chamber, photocatalytic oxidation reactor, wet absorption system, and finally a system for measuring nitrogen oxides. Firstly, by using photocatalytic property, nitrogen oxide was converted to nitrogen dioxide. Then, absorption system was used to absorb nitrogen dioxide into the sodium hydroxide solution. Results: Experimental results have shown that output of nitrogen oxide removal in the initial concentration of 200 ppm was 44% in the beginning of the process and then fixed at 15% during the rest of the process. Also, by changing the amount of zinc oxide nanoparticles from 4 to 8 mg/cm 2 , no considerable change was observed in the conversion rate of nitrogen oxide. In addition, while

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Simultaneous absorption of SO2 and NO from flue gas with KMnO4/NaOH solutions

Cited by 212 publications

References 16 publications

Simultaneous removal of SO2, NO and Hg0 by wet scrubbing using urea + KMnO4 solution

Simultaneous removal of SO2, NO and Hg0 by wet scrubbing using urea + KMnO4 solution

Effect of treatment with tartaric acid on carbon as a catalyst in the absorption of NO into the hexamminecobalt(II) solution

Investigation of Photocatalytic Oxidation and Wet Absorption in a Combined System for Removal of Nitrogen Oxides

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