Removal of NO from flue gas by aqueous chlorine-dioxide scrubbing solution in a lab-scale bubbling reactor

Deshwal, Bal Raj; Jin, Dong Seop; Lee, Si Hyun; Moon, Seung Hyun; Jung, Jong Hyeon; Lee, Hyung Keun

doi:10.1016/j.jhazmat.2007.05.016

Cited by 114 publications

(54 citation statements)

References 30 publications

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“…It has been reported in the literature that the solution pH has a significant effect on the oxidation potential of NaClO 2 [23][24][25][26][27][28][29]. Therefore, the dependence of simultaneous removal on ACO pH was investigated.…”

Section: Effect Of Aco Ph On the Simultaneous Removalmentioning

confidence: 99%

“…Based on the related literature references [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]44], we inferred that the main functional oxidants in the reaction system were ClO 2 À , ClO 2 , Cl 2 , ClÁ and Br 2 . From the electrochemistry, the standard electrode potentials of ClO 2 À /Cl À (1.599 V), ClO 2 /Cl À (1.511 V), Cl 2 /Cl À (1.396 V) and Br 2 /Br À (1.09 V) are higher than those of Hg 2+ /Hg 0 (0.796V), SO 4 2À /H 2 SO 3 (0.172 V), SO 4 2À /SO 2 (0.158V), NO 2 /NO (1.049 V), NO 3 À /NO (0.957 V), NO 2 À /NO (-0.460V) and NO 3 À /NO 2 À (0.835 V), indicating that the oxidation of SO 2 , NO and Hg 0 by vaporized ACO can occur.…”

Section: Products Characterization and Reaction Mechanismmentioning

confidence: 99%

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Integrative process of preoxidation and absorption for simultaneous removal of SO2, NO and Hg0

Zhao

Hao

2015

Chemical Engineering Journal

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Section: Effect Of Aco Ph On the Simultaneous Removalmentioning

confidence: 99%

Section: Products Characterization and Reaction Mechanismmentioning

confidence: 99%

Integrative process of preoxidation and absorption for simultaneous removal of SO2, NO and Hg0

Zhao

Hao

2015

Chemical Engineering Journal

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“…Deshwal et al study aimed at removing NO from the gas stream using chlorine dioxide solution. They removed 60% of the NO x in the pH range of 11 -3 under optimum conditions (31). In this study, they reported that conversion of NO to NO 2 , besides production of a more soluble product with respect to the pollutants, generates the NO 2 6 Health Scope.…”

Section: Effect Of Initial Concentration and Sodium Hydroxide Solutiomentioning

confidence: 85%

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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“…Complete oxidation of NH − 2 into nitrogen dioxide maybe occurred by electron beam. NO − 2 is finally converted into nitrate and gas [15] . OH-adduct reaction is supposed to happen during irradiation.…”

Section: Analysis Of Inorganic Anions Under Irradiationmentioning

confidence: 99%

Decomposition mechanism of chloramphenicol under electron beam irradiation

Zhou

et al. 2010

J. Shanghai Univ.(Engl. Ed.)

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The purpose of this study was to evaluate the potential of electron beam to decompose chloramphenicol (CAP) in aqueous solutions. At the absorbed dose of 15 kGy, the decomposition rate of CAP was 95.24%. The degradation of CAP under electron beam irradiation followed pseudo-first-order kinetics. Redox reactions of CAP aqueous solutions with hydroxy1 radicals (·OH), hydrated electrons (e − aq ) and hydrated atoms (·H) were studied. The increase of the additives would result in the decrease of the degradation efficiency. The concentration of Cl − and NO − 3 in aqueous solution increased after electron beam irradiation. On the basis of the experimental results, a photocatalytic mechanism was discussed. The rate constant for reactions of ·OH and CAP was 9.36×10 7 L/(mol·s) and for reaction of e − aq and CAP was 7.33×10 7 L/(mol·s). ·OH was supposed to play the key role in the radiation system of aqueous solution. Other free radicals like e − aq and ·H could also initiate the degradation.

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Removal of NO from flue gas by aqueous chlorine-dioxide scrubbing solution in a lab-scale bubbling reactor

Cited by 114 publications

References 30 publications

Integrative process of preoxidation and absorption for simultaneous removal of SO2, NO and Hg0

Integrative process of preoxidation and absorption for simultaneous removal of SO2, NO and Hg0

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

Decomposition mechanism of chloramphenicol under electron beam irradiation

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