21. Terbium was not isolated in pure form until the advent of ion exchange techniques. 22. Increases in temperature and pH enhances the ion exchange reaction. 23. Counter-current deionization is the more attractive method of ion exchange . 24. In the home, the most common treatment is to install an ion exchange water softener. 25. This maximizes the ion exchange and / or membrane performance that follow in the system. 26. Most ion exchange systems are containers of ion exchange resin operated on a cyclic basis. 27. Most ion exchange systems are containers of ion exchange resin operated on a cyclic basis. 28. This cell consists of anode and cathode electrodes with an ion exchange membrane between them. 29. Effective long-term ion exchange removal of arsenic requires a trained operator to maintain the column. 30. The leachate is subjected to one of several sequences of precipitation, solvent extraction, and ion exchange .
