Avaliação de um reator eletrodialítico, para fins de dessalinização de hidrolizado protéico por eletrodiálise.

Abstract

A laboratory scale electrodialysis reactor was built to investigate, through electrodialysis, the desalination of a hydrolyzed collagen. Which is a protein rich substance, constituting 6% of body weight, with fibrillar characteristics, responsible for the firmness and integrity of the structures and largely used in obtaining cosmetic and pharmaceutical products. In order to evaluate the reactor performance, the following parameters were studied: rate and time of desalination to achieve 99.9% conversion, ohmic resistance, current density, energy consumption as a function of the initial concentration of the hydrolyzate, potential difference applied to the electrodes and velocity of agitation. The results show that current density, current efficiency decrease, and the ohmic resistance of the system increases as a function of desalination time for a given initial concentration. Energy consumption is related to desalination time and potential difference applied to electrodes.