Analysis of Citric Acid Recovery Technology for Recycling of Citric Acid from Waste Solution

Abstract

Citric acid is an organic acid used in various industries, and its demand is steadily increasing. Citric acid is primarily obtained via recovery processes, such as the separation and purification of the fermentation broth obtained from microbial fermentation. Various technologies have been developed for the recovery processes, such as solvent extraction, ion exchange resins, and electromembrane separation, with a primary focus on precipitation methods. This study examines citric acid recovery technologies that are both commercially available and are being developed and suggests directions for the development of more efficient and eco-friendly recovery technologies, particularly for recycling waste citric acid solutions.