Using electrodialysis technology for regeneration of hydrochloric acid from sour pectin extracts

Abstract

The article focuses on investigation of efficiency of electrodialysis membrane technology for regeneration of hydrochloric acid in pectin extracts. Traditional methods involving using ethanol, encounter various technical problems. Application of electrodialysis membrane technology is considered to be an efficient solution. The study aims at evaluating the capacity of the membrane method in the process of hydrochloric regeneration in apple and beet pectin extracts and the way it affects the characteristics of pectin molecules of both types. The experiments show the possibility of almost full regeneration of hydrochloric acid for a reuse in the process of further extraction of apple and beet pectins. Such approach also enhances an increase in the degree of esterification and molecular mass of pectins, which is especially important in the case of less low-molecular beet pectin. The increase in the esterification degree boosts its jellying effect, but reduces its detoxicant capacity.