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Please use this identifier to cite or link to this item: http://hdl.handle.net/11133/596

Title: 大気汚染物質除去に関する研究 : (6) EDTA・Fe (II) 添加 MgSO_3 スラリーによる希薄 NO, SO_2 の単一および同時吸収
Other Titles: タイキ オセン ブッシツ ジョキョ ニカンスル ケンキュウ ( 6 ) EDTA Fe ( II ) テンカ MgSO_3 スラリー ニヨル キハク NO, SO_2 ノ タンイツ オヨビ ドウジ キュウシュウ
Removal of Atmospheric Pollutants : (6) Individual and Simultaneous Absorption of Dilute NO and SO_2 in Aqueous Slurries of MgSO_3 with (Fe)^<II>-EDTA
Authors: 工藤, 市兵衛
近藤, 高司
佐田, 栄三
熊沢, 英博
KUDO, Ichibei
KONDO, Takashi
SADA, Eizo
KUMAZAWA, Hidehiro
Issue Date: 31-Mar-1981
Publisher: 愛知工業大学
Abstract: The absorption rates of (1) NO in aqueous solutions of (Fe)^<II>-EDTA, (2) NO in aqueous solutions or slurries of MgSO_3 with added (Fe)^<II>-EDTA, and (3) NO in the presence of SO_2 in aqueous slurries of MgSO_3 with added (Fe)^<II>-EDTA were measured using a stirred vessel with a plane gas-liquid interface at 25℃ and 1atm. The forward rate constant of the complexing reaction, NO+(Fe)^<II>-EDTA &rlarr; (Fe)^<II> (EDTA)(NO), at various pH's was derived from the enhancement factor for absorption of NO in aqueous solutions of (Fe)^<II>-EDTA. The reduction of NO coordinated to (Fe)^<II>-EDTA with SO_3^<2-> is found to be very slow as compared with the above complexing reaction. Coexisting SO_2 can promote the absorption rate of NO by aqueous slurries of MgSO_3 with (Fe)^<II>-EDTA. It is believed that coexisting SO_2 plays a part of releasing SO_3^<2-> from the complex (Fe)^<II> (EDTA)(SO_3^<2->)(NO) and that the presence of SO_2 in the gas phase effectively improves the pH of the solution at the interface toward favorable values for the reaction of NO with (Fe)^<II>-EDTA.
URI: http://hdl.handle.net/11133/596
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