Removal kinetics for gaseous NO and SO2by an aqueous NaClO2solution mist in a wet electrostatic precipitator

Handle URI:
http://hdl.handle.net/10754/621750
Title:
Removal kinetics for gaseous NO and SO2by an aqueous NaClO2solution mist in a wet electrostatic precipitator
Authors:
Park, Hyun-Woo; Park, Dong-Wha
Abstract:
Removal kinetics for NO and SO2 by NaClO2 solution mist were investigated in a wet electrostatic precipitator. By varying the molar concentrations of NO, SO2, and NaClO2, the removal rates of NO and SO2 confirmed to range from 34.8 to 72.9 mmol/m3 s and 36.6 to 84.7 mmol/m3 s, respectively, at a fixed gas residence time of 0.25 s. The rate coefficients of NO and SO2 were calculated to be 0.679 (mmol/m3)−0.33 s−1 and 1.401 (mmol/m3)−0.1 s−1 based on the rates of the individual removal of NO and SO2. Simultaneous removal of NO and SO2 investigated after the evaluation of removal rates for their individual treatment was performed. At a short gas residence time, SO2 gas removed more quickly by a mist of NaClO2 solution than NO gas in simultaneous removal experiments. This is because SO2 gas, which has a relatively high solubility in solution, was absorbed more rapidly at the gas–liquid interface than NO gas. NO and SO2 gases were absorbed as nitrite (Formula presented.) and sulfite (Formula presented.) ions, respectively, by the NaClO2 solution mist at the gas–liquid interface. Then, (Formula presented.) and (Formula presented.) were oxidized to nitrate (Formula presented.) and sulfate (Formula presented.), respectively, by reactions with (Formula presented.), ClO2, HClO, and ClO in the liquid phase. © 2016 Informa UK Limited, trading as Taylor & Francis Group
KAUST Department:
Clean Combustion Research Center
Citation:
Park H-W, Park D-W (2016) Removal kinetics for gaseous NO and SO2by an aqueous NaClO2solution mist in a wet electrostatic precipitator. Environmental Technology: 1–9. Available: http://dx.doi.org/10.1080/09593330.2016.1213770.
Publisher:
Informa UK Limited
Journal:
Environmental Technology
Issue Date:
26-Jul-2016
DOI:
10.1080/09593330.2016.1213770
Type:
Article
ISSN:
0959-3330; 1479-487X
Sponsors:
Regional Innovation Center for Environmental Technology of Thermal Plasma
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorPark, Hyun-Wooen
dc.contributor.authorPark, Dong-Whaen
dc.date.accessioned2016-11-03T13:24:09Z-
dc.date.available2016-11-03T13:24:09Z-
dc.date.issued2016-07-26en
dc.identifier.citationPark H-W, Park D-W (2016) Removal kinetics for gaseous NO and SO2by an aqueous NaClO2solution mist in a wet electrostatic precipitator. Environmental Technology: 1–9. Available: http://dx.doi.org/10.1080/09593330.2016.1213770.en
dc.identifier.issn0959-3330en
dc.identifier.issn1479-487Xen
dc.identifier.doi10.1080/09593330.2016.1213770en
dc.identifier.urihttp://hdl.handle.net/10754/621750-
dc.description.abstractRemoval kinetics for NO and SO2 by NaClO2 solution mist were investigated in a wet electrostatic precipitator. By varying the molar concentrations of NO, SO2, and NaClO2, the removal rates of NO and SO2 confirmed to range from 34.8 to 72.9 mmol/m3 s and 36.6 to 84.7 mmol/m3 s, respectively, at a fixed gas residence time of 0.25 s. The rate coefficients of NO and SO2 were calculated to be 0.679 (mmol/m3)−0.33 s−1 and 1.401 (mmol/m3)−0.1 s−1 based on the rates of the individual removal of NO and SO2. Simultaneous removal of NO and SO2 investigated after the evaluation of removal rates for their individual treatment was performed. At a short gas residence time, SO2 gas removed more quickly by a mist of NaClO2 solution than NO gas in simultaneous removal experiments. This is because SO2 gas, which has a relatively high solubility in solution, was absorbed more rapidly at the gas–liquid interface than NO gas. NO and SO2 gases were absorbed as nitrite (Formula presented.) and sulfite (Formula presented.) ions, respectively, by the NaClO2 solution mist at the gas–liquid interface. Then, (Formula presented.) and (Formula presented.) were oxidized to nitrate (Formula presented.) and sulfate (Formula presented.), respectively, by reactions with (Formula presented.), ClO2, HClO, and ClO in the liquid phase. © 2016 Informa UK Limited, trading as Taylor & Francis Groupen
dc.description.sponsorshipRegional Innovation Center for Environmental Technology of Thermal Plasmaen
dc.publisherInforma UK Limiteden
dc.subjectNaClO 2en
dc.titleRemoval kinetics for gaseous NO and SO2by an aqueous NaClO2solution mist in a wet electrostatic precipitatoren
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalEnvironmental Technologyen
dc.contributor.institutionDepartment of Chemistry and Chemical Engineering, Inha University, Incheon, Republic of Koreaen
kaust.authorPark, Hyun-Wooen
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