Mass transfer in the absorption of SO2 and NOx using aqueous euchlorine scrubbing solution

Deshwal, Bal Raj; Lee, Hyung-Keun

doi:10.1016/s1001-0742(08)62244-5

Cited by 41 publications

(14 citation statements)

References 19 publications

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“…4(b)), and the manganese concentration in liquid phase appeared to be quite low (Table 3). This was mainly due to the fact that NO is insoluble and the reaction was controlled by gas-liquid mass transfer [41]. Reversely when 1800 ppm ozone was injected into system, NO x removal efficiency increased to about 75% ( Fig.…”

Section: Effects Of Ozone and Pyrolusite On No X Removal Efficiencymentioning

confidence: 98%

Simultaneous absorption of NOx and SO2 from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone

Sun

Ding

Zeng

et al. 2011

Journal of Hazardous Materials

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Section: Effects Of Ozone and Pyrolusite On No X Removal Efficiencymentioning

confidence: 98%

Simultaneous absorption of NOx and SO2 from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone

Sun

Ding

Zeng

et al. 2011

Journal of Hazardous Materials

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“…Up to now, aqueous solutions of many oxidants have been found to be effective for NO x removal, including NaClO 2 , KMnO 4 , ClO 2 , NaClO 3 , Fenton reagent , and so on. During the absorption process, the absorption rate of NO 2 into absorption solution has great impact on the total NO x removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

Absorption of NO₂ into aqueous (NH₄)₂SO₃ solution in a stirred tank reactor

Pan

Zhang

Ren

et al. 2012

Env Prog and Sustain Energy

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Absorption experiments of NO2 from simulated flue gas into aqueous (NH4)2SO3 solution were performed in a stirred tank reactor under atmosphere pressure. As can be seen from the experimental results, the absorption rate of NO2 into (NH4)2SO3 solution increases as the (NH4)2SO3 concentration increases from 0.01 to 0.06 mol/L. As the concentration of (NH4)2SO3 solution exceeds 0.06 mol/L, the absorption process becomes gas‐film controlled. And the absorption rate increases with increasing NO2 inlet concentration but decreases with increasing reaction temperature. Compared with Na2SO3 solution, (NH4)2SO3 solution has higher NO2 absorption rate. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 465–469, 2013

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“…The most important advantage of this method, as compared with SCR, would be a large saving in capital cost [15]. However, NO must be oxidized to higher oxidation states (NO 2 , HNO 2 and HNO 3 ) which are more easily soluble in aqueous solutions and can be removed by alkaline absorbents [16][17][18]. The most well-known NO oxidants are ClO 2 or O 3 which are, however, highly expensive as well as very danger-ous for equipment especially in gas phase operations [16].…”

Section: Introductionmentioning

confidence: 99%

“…The most well-known NO oxidants are ClO 2 or O 3 which are, however, highly expensive as well as very danger-ous for equipment especially in gas phase operations [16]. The majority of scientific works are based on using H 2 O 2 as oxidation reagent because it is known as a lower cost and environmental friendly oxidant [17]. The major operating cost for the ozone oxidation process is the cost of electricity for ozone generation and expensive ozonizers [18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of electrical energy consumption in UV/H2O2 advanced oxidation process for simultaneous removal of NO and SO2

Shahrestani¹,

Rahimi²

2018

Environmental Engineering Research

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The electrical energy consumption (EEC) in removal of NO by a UV/H2O2 oxidation process was introduced and related to removal efficiency of this gas. The absorption-reaction of NO was conducted in a bubble column reactor in the presence of SO2. The variation in NO removal efficiency was investigated for various process parameters including NO and SO2 inlet concentrations, initial concentration of H2O2 solution and gas flow rate. EEC values were obtained in these different conditions. The removal efficiency was increased from about 22% to 54.7% when H2O2 concentration increased from 0.1 to 1.5 M, while EEC decreased by about 70%. However, further increase in H2O2 concentration, from 1.5 to 2, had no significant effect on NO absorption and EEC. An increase in NO inlet concentration, from 200 to 500 ppm, decreased its removal efficiency by about 10%. However, EEC increased from 2.9 × 10 -2 to 3.9 × 10 -2 kWh/m 3 . Results also revealed that the presence of SO2 had negative effect on NO removal percentage and EEC values. Some experiments were conducted to investigate the effect of H2O2 solution pH. The changing of pH of oxidation-absorption medium in the ranges between 3 to 10, had positive and negative effects on removal efficiency depending on pH value.

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Mass transfer in the absorption of SO2 and NOx using aqueous euchlorine scrubbing solution

Cited by 41 publications

References 19 publications

Simultaneous absorption of NOx and SO2 from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone

Simultaneous absorption of NOx and SO2 from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone

Absorption of NO₂ into aqueous (NH₄)₂SO₃ solution in a stirred tank reactor

Evaluation of electrical energy consumption in UV/H2O2 advanced oxidation process for simultaneous removal of NO and SO2

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Mass transfer in the absorption of SO2 and NOx using aqueous euchlorine scrubbing solution

Cited by 41 publications

References 19 publications

Simultaneous absorption of NOx and SO2 from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone

Simultaneous absorption of NOx and SO2 from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone

Absorption of NO2 into aqueous (NH4)2SO3 solution in a stirred tank reactor

Evaluation of electrical energy consumption in UV/H2O2 advanced oxidation process for simultaneous removal of NO and SO2

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Absorption of NO₂ into aqueous (NH₄)₂SO₃ solution in a stirred tank reactor