Facilitated Transport of Penicillin G by Bulk Liquid Membrane with TBP as Carrier |
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Authors: | Zhongqi Ren Yuanyuan Lv Weidong Zhang |
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Institution: | (1) State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, People’s Republic of China |
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Abstract: | The facilitated transport of penicillin G from aqueous solutions to the stripping phase through bulk liquid membrane (BLM)
containing TBP in 3% iso-octanol and n-butyl acetate was studied. Na2CO3 solution was used as the stripping phase. Experiments were performed as a function of stirring rate, TBP concentration and
type of diluent in the liquid membrane phase, pH, and initial penicillin G concentration in the feed phase, Na2CO3 concentration in the stripping phase, etc. The results showed that the BLM process could carry out the simultaneous separation
and concentration of penicillin G from dilute aqueous solutions, and arise “up-hill” effect due to the characteristic of non-equilibrium
mass transfer. The diffusion of penicillin G complex in the liquid membrane phase played an important role in BLM process.
The mass transfer mechanism of BLM for this system was also discussed. |
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Keywords: | Bulk liquid membrane Penicillin G Facilitated transport TBP |
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