Avaliação teórica do processo de eletrodiálise

Abstract

Electrodialysis is a membrane separation technique in which ionic species in solution are transported through selective membranes by the action of an electric field. This movement across the membranes causes two solutions to form: one more dilute and one more concentrated than the initial solution. It can be used in wastewater treatment as it enables the recovery of heavy metals and the reuse of water. The aim of this paper is to make a theoretical review about the electrodialysis process and its main applications. Important topics will be detailed within electrodialysis, showing how separation occurs and any problems that may arise. The methodology used was a systematic literature review, using as a guiding tool, material already published on the subject; books, scientific articles, periodicals, and Internet materials available in the following databases: SCIELO, Periodical CAPES, Google ACADEMICO. Thus it will be possible to conclude how the whole process of electrodialysis happens, what happens each step of the process and its importance in current studies.