Effect of membrane properties on the desalination performance of a circulating diffusion dialysis system

抄録

Circulating diffusion dialysis （CDD） is a power-free desalination technique that uses salinity gradient energy. To improve the desalination performance of CDD, desalination tests were conducted using two types of ion exchange membranes with different transport properties. At low concentration （1000 ppm NaCl solution）, membranes with lower area resistance exhibited higher desalination performance, whereas at higher concentration （5000 ppm NaCl solution）, membranes with lower permeability to water and salt were more effective.