SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2016, Vol. 24 ›› Issue (3): 345-352.DOI: 10.1016/j.cjche.2015.11.004

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

The effect of cation-π interactions in electrolyte/organic nanofiltration systems

Gang Yang, YuMa, Weihong Xing   

  1. Nanjing Tech University, Nanjing 210009, China
  • Received:2015-04-12 Revised:2015-08-17 Online:2016-04-08 Published:2016-03-28

Abstract: The rejection properties of a nanofiltration organic membrane were investigated using KCl solutions, NaCl solutions, NaCl/benzyl alcohol hybrid solutions and KCl/benzyl alcohol hybrid solutions.The presence of benzyl alcohol(3.7mol·m-3) caused a decrease in electrolyte rejection within the range of 0 to 6%.Themechanismof the decreasewas discussed.The cation-π bondwas assumed to formin the hybrid solution and to further induce the partial dehydration of the cation.The steric and charge density inhibition of the salt activity was strengthened, and the salt rejection was thus decreased.A simulation was performed to evaluate the radius of the cation.

Key words: Nanofiltration, Cation-&pi, interaction, Dehydration, Steric effect