Diffusion dialysis (DD) is an ion-exchange membrane (IEM) separation process driven by concentration gradient and has been applied for separation and recovery of acid/alkali waste solutions in a cost-effective and environmentally friendly manner. Diffusion dialysis with ion-exchange membranes is mainly used today to recover acids or bases from a mixture with salts. The process is based on the fact that ion-exchange membranes generally show a high permeability for counterions while being more or less impermeable for co-ions. Exceptions are protons and hydroxide ions which can easily permeate both cation- and anion-exchange membranes. The transport mechanism in diffusion dialysis is more complex than in conventional dialysis due to the electrostatic interaction between positive and negative charges and the electroneutrality requirement。        Main technical indexes of diffusion dialysis CEM for alkali separation Diffusion dialysis CEM for alkali separation Product type TWDDC1 Standard TWDDC2 High Flux Thickness （mm） 0.25～0.28 0.15～0.25 Water content （%） 50～70 40～80 OH- Diffusion Coefficient （10-7m/s） ≥1 ≥2 OH-/AlO2+ Separation factor ≥10 ≥15 Application: alkali/salt separation in aluminum oxide, tungsten oxide, viscose fiber, etc.   Main technical indexes of  diffusion dialysis AEM for acid separation Diffusion dialysis AEM for acid separation Product type TWDDA1 Standard TWDDA2 High Flux Thickness （mm） 0.30～0.32 0.20～0.30 Water content （%） 40～70 20～50 H+ Diffusion Coefficient （10-7m/s） ≥5 ≥5 H+/Fe2+ Separation factor ≥15 ≥15 Application: acid/salt separation in wet metallurgy, Formed Fool  , steel processing and storage battery ,etc. Contact:Tel:+86 592 6514970Skype:18060902001WhatsApp:18060902001WeChat:18060902001TM: guochukejiQQ:1641011431

Diffusion dialysis (DD) is an ion-exchange membrane (IEM) separation process driven by concentration gradient and has been applied for separation and recovery of acid/alkali waste solutions in a cost-effective and environmentally friendly manner.Diffusion dialysis with ion-exchange membranes is mainly used today to recover acids or bases from a mixture with salts. The process is based on the fact that ion-exchange membranes generally show a high permeability for counterions while being more or less impermeable for co-ions. Exceptions are protons and hydroxide ions which can easily permeate both cation- and anion-exchange membranes. The transport mechanism in diffusion dialysis is more complex than in conventional dialysis due to the electrostatic interaction between positive and negative charges and the electroneutrality requirement。    Main technical indexes of diffusion dialysis CEM for alkali separationDiffusion dialysis CEM for alkali separationProduct typeTWDDC1StandardTWDDC2High FluxThickness（mm）0.25～0.280.15～0.25Water content（%）50～7040～80OH- Diffusion Coefficient（10-7m/s）≥1≥2OH-/AlO2+Separation factor≥10≥15Application: alkali/salt separation in aluminum oxide, tungsten oxide, viscose fiber, etc. Main technical indexes of  diffusion dialysis AEM for acid separationDiffusion dialysis AEM for acid separationProduct typeTWDDA1StandardTWDDA2High FluxThickness（mm）0.30～0.320.20～0.30Water content（%）40～7020～50H+ Diffusion Coefficient（10-7m/s）≥5≥5H+/Fe2+Separation factor≥15≥15Application: acid/salt separation in wet metallurgy,Formed Fool  , steel processing and storage battery ,etc.Contact:Tel:+86 592 6514970Skype:18060902001WhatsApp:18060902001WeChat:18060902001TM: guochukejiQQ:1641011431