Acidic wastewater treatment by Donnan dialysis involving tubular anion-exchange membranes

✍ Scribed by G. Wiśniewska; T. Winnicki

• Book ID: 103057936
• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 397 KB
• Volume: 68
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/0011-9164(88)80049-3

✦ Synopsis

The study reported at the 1985 Congress on Desalination and Water Reuse [ 1 ] has been continued, and some up-to-date results are presented in this paper. Unlike the investigations accomplished earlier, this study makes use of actual acidic wastewaters ( efflucent from the rinsing of nitrocellulose) to test the usefulness of the title membranes as applied to the separation of nitrate ions and sulphate ions which occur at a concentration of 0.013 kmol m -3 and 0.1 kmol m -3, respectively. The effect of the type and concentration of the hydroxide solution on the course of the dialysis process (i.e. on the deacidification rate and on the selectivity of the process) is investigated. Consideration is also given to the relationship between the presence of salts in the concentrate and the efficiency of dialysis.