Simultaneous removal of SO2 and NO by wet scrubbing using aqueous chlorine dioxide solution

Jin, Dong-Seop; Deshwal, Bal Raj; Park, Young-Seong; Lee, Hyung-Keun

doi:10.1016/j.jhazmat.2005.12.001

Cited by 207 publications

(114 citation statements)

References 31 publications

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“…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

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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

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“…It is difficult to obtain the significant NO x removal efficiency because of the low solubility of nitric oxide (NO) that accounts for more than 90 % of all oxides of nitrogen as NO x (Jin et al 2006;Long et al 2008) by wet removal processes. Several authors have studied the use of various aqueous solutions (acid urea, hydrogen peroxide, sodium hypochlorite, sodium sulphite solutions, etc.)…”

Section: Introductionmentioning

confidence: 99%

Nitric oxide absorption by hydrogen peroxide in airlift reactor: a study using response surface methodology

Bhanarkar

Gupta

Biniwale

et al. 2013

Int. J. Environ. Sci. Technol.

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Absorption of nitric oxide from nitric oxide /air mixture in hydrogen peroxide solution has been studied on bench scale internal loop airlift reactor. The objective of this investigation was to study the performance of nitric oxide absorption in hydrogen peroxide solution in the airlift reactor and to explore/determine the optimum conditions using response surface methodology. A BoxBehnken model has been employed as an experimental design. The effect of three independent variables-namely nitric oxide gas velocity, 0.02-0.11 m/s; nitric oxide gas concentration, 300-3,000 ppm and hydrogen peroxide concentration, 0.25-2.5 %-has been studied on the absorption of nitric oxide in aqueous hydrogen peroxide in the semi-batch mode of experiments. The optimal conditions for parameters were found to be nitric oxide gas velocity, 0.02 m/s; nitric oxide gas concentration, 2,246 ppm and hydrogen peroxide concentration, 2.1 %. Under these conditions, the experimental nitric oxide absorption efficiency was observed to be *65 %. The proposed model equation using response surface methodology has shown good agreement with the experimental data, with a correlation coefficient (R 2 ) of 0.983. The results showed that optimised conditions could be used for the efficient absorption of nitric oxide in the flue gas emanating from industries.

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“…Sci. 2017, 7, 377 2 of 10 oxidation have been reported [5][6][7][8][9][10][11][12], including gas phase catalytic oxidation, ozone oxidation, corona discharge oxidation, and liquid oxidation. After oxidation, the soluble NO2 can be further removed with SO2 in the subsequent absorption process [13].…”

Section: Methodsmentioning

confidence: 99%

The Chemical Behaviors of Nitrogen Dioxide Absorption in Sulfite Solution

Hong

Zhu

et al. 2017

Applied Sciences

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Abstract:The simultaneous removal of nitrogen oxides (NO x ) and sulfur dioxide (SO 2 ) by absorption is considered to be one of the most promising technologies for flue gas treatment, and sulfite is the main component of the absorption solution. To understand the chemical behaviors of the NO 2 absorption in sulfite solution, the absorption time dependences of concentrations of nitrogen and sulfur compositions in both gas phase and liquid phases were investigated by flue gas analyzer, Ion chromatography (IC), Gas chromatography (GC), and Fourier transform infrared spectrometry (FTIR) methods using a bubbling reactor. The mass equilibrium of the N and S compositions were also studied. The results indicate that sulfite concentration plays a vital role in NO 2 absorption. The main absorption products are NO 3 − and NO 2 − , and NO 2 − can be converted into NO 3 − in the presence of oxygen. Besides, about 4% to 9% by-products of S compositions are formed, and 4% to 11% by-products of N compositions such as NO, N 2 , N 2 O 5 , N 2 O, and HNO 3 in the gas phase were detected in the emissions from the bubbling reactor. On the basis of N and S compositions, a possible pathway of NO 2 absorption in sulfite solution was proposed.

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Simultaneous removal of SO2 and NO by wet scrubbing using aqueous chlorine dioxide solution

Cited by 207 publications

References 31 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

Nitric oxide absorption by hydrogen peroxide in airlift reactor: a study using response surface methodology

The Chemical Behaviors of Nitrogen Dioxide Absorption in Sulfite Solution

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