Chinese Journal of Chemical Engineering, Vol.27, No.1, 85-91, 2019
The removal of Cr(VI) through polymeric supported liquid membrane by using calixarene as a carrier
In this work, the transport and removal of Cr(VI) were achieved through supported liquid membrane (SLM) by using a 5,17, di-tert-butyl-11,23-bis[(1,4-dioxa-8-azaspiro[4,5]clecanyl)methyl]-25,26,27,28-tetrahydroxy calix arene carrier, dissolved in 2-nitrophenyl octyl ether dichloromethane. The studied parameters are the solvent effect in the membrane phase, the effect of carrier concentration, and the acid type in the donor phase. The Celgard 2500 was used as a membrane support. We used the Danesi mass transfer model to calculate the permeability coefficients for each studied parameter. In addition. AFM and SEM techniques were used to characterize the surface morphology of the prepared Celgard 2500 membrane that included the calixarene carrier. (C)2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.