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Citation: Yang Pinzhao, She Liren, Gu Baozhong. MASS-TRANSFER PROCESS IN THE RECOVERY OF SALICYLIC ACDD BY LIQUID MEMBRANE[J]. Chinese Journal of Applied Chemistry, ;1990, 7(1): 98-100. shu

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

1.
Jangsu Institute of Chemical Technology, Changzhou 213016

Received Date: 24 November 1988
Available Online: 19 May 1989

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 salicylic acid in external phase (r), volume ratio of oil phase to internal solution phase (Roi) and volume ratio of emulsion phase to external solution phase (Rew) on the kinetics of mass transfer 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 (C_o/C) and t.
- salicylic acid,
- liquid membrane,
- mass transfer process
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