中华医学超声杂志

应用化学 ›› 1990, Vol. 0 ›› Issue (1): 98-100.

• 研究简报 • 上一篇    

用液膜技术回收水杨酸时的传质过程

杨品钊, 沈力人, 顾宝忠   

  1. 江苏化工学院 常州 213010
  • 收稿日期:1988-11-24 修回日期:1989-05-19 出版日期:1990-02-10 发布日期:1990-02-10

MASS-TRANSFER PROCESS IN THE RECOVERY OF SALICYLIC ACDD BY LIQUID MEMBRANE

Yang Pinzhao, She Liren, Gu Baozhong   

  1. Jangsu Institute of Chemical Technology, Changzhou 213016
  • Received:1988-11-24 Revised:1989-05-19 Published:1990-02-10 Online:1990-02-10

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摘要： 用液膜技术回收苯酚巳见诸文献[1-5],本文报导用液膜技术回收水杨酸,着重于水杨酸在液膜中渗透的动力学现象,用已有的液膜传质模型作了验证。

关键词: 水杨酸, 液膜, 传质过程

Abstract: The aqueous solution of salicylic acid can be recovered by liquid membrane process.The influence of rate of stirring(n), molar ratio of NaOH in internal phase and salicylicacid in external phase(r), volume ratio of oil phase to internal solution phase(Roi)andvolume ratio of emulsion phase to external solution phase(Rew)on the kinetics of masstransfer process were studied. It was shown that when r=1.2-1.5 the diffusion of salicy-lic acid was nonstationary and there was a linear relationship between concentration C and √t(t-time). When r≥3.52 the diffusion of salicilic acid was stationary and therewas a linear relationship between Ln(Co/C)and t.

Key words: salicylic acid, liquid membrane, mass transfer process

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