水溶液中への酸素ガスの溶解速度と溶解度

URI http://repository.tsuyama-ct.ac.jp/metadata/266
フルテキストURL
タイトル
水溶液中への酸素ガスの溶解速度と溶解度
タイトル(別表記)
Dissolution Rate and Solubility of Oxygen in Aqueous Solution
著者
著者 樋口 敏三
著者(別表記) Higuchi Binzo
抄録

The volumetric mass transfer coefficient, k(La), and the fractional gas holdup, ε(G), were measured by blowing a mixed gas of N2 and O2 at higher bubble frequencies from an upward vertical nozzle into the aqueous solution. And the saturation concentrations of dissolved oxygen in the solution containing SO4(2-) ion or Fe(Ⅲ) precipitate were also measured. The experimental results are summarized as follows. (1) The value of k (La) was not affected by pH of the solution and by ZnSO4, Na2SO4 or Fe(Ⅲ) precipitate contained in the solution. But the value of k(La) increased with temperature and the Reynolds number of gas flow at the orifice, Re(N). The activation energy of k(La) was 15kJ-mol(-1). (2) The value of ε(G) obtained in this work was in good agreement with those obtained previous works. And it is reasonable to assume the relationship between ε(G) and k(La) as valid by the comparison with those obtained previous works. (3) The saturation concentration of dissolved oxygen decreased with the concentration of NaCl and these values were in good agreement with those shown in JIS. And the concentration also decreased with the concentration of Na2SO4 in the solution, but was not affected by Fe(Ⅲ) precipitate.

主題
570 化学工業
発行日
1994-11-21
出版物タイトル
津山工業高等専門学校紀要
出版物タイトル(別表記)
Bulletin of Tsuyama National College of Technology
34
開始ページ
41
終了ページ
48
ISSN
0287-7066
NCID
AN00149351
出版者
津山工業高等専門学校
オフィシャルURL
資料タイプ
紀要論文
言語
日本語
論文のバージョン
publisher