Absorption of Nitrogen Dioxide by the Polyphenol Solution

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  • Shibukawa Takumi
    Division of Chemical and Materials Engineering, Graduate School of Engineering, Muroran Institute of Technology
  • Ohira Yuichi
    Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology
  • Shimadzu Masamitsu
    Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology
  • Obata Eiji
    Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology

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  • ポリフェノール水溶液による二酸化窒素の吸収
  • ポリフェノール スイヨウエキ ニ ヨル ニサンカ チッソ ノ キュウシュウ

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Abstract

The effect of polyphenol concentration on the absorption of NO2 into aqueous polyphenol solution was experimentally investigated. A gas mixture containing nitrogen dioxide was passed through a bubble-column-type batch-absorption apparatus, and concentrations of nitrite and nitrate in the absorbing liquid were measured. Aqueous polyphenol solution allows selective production of nitrite and inhibits the production of nitrate. The formation behavior of nitrite when this solution was used differed from that when aqueous sulfite solution or aqueous ascorbic acid solution was used.

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