A modified quentin method for desalting thin juice and mother liquor B in beet sugar industry

摘要

This work reports on a modification of the standard Quentin method by the use of Ca~(2+)- enriched brine obtained by electrodialysis (ED) treatment of thin juice to regenerate the Ca~(2+) form of the resin used to remove of K~+ and Na~+ in mother liquor B. Results showed that after the ED treatment was carried out under the best operating conditions (voltage of 1.17 V/Cell and recirculating flow rate of 701/h), BK001 resin was regenerated within 3.6 h with a Ca~(2+) exchange capacity of 53.9 mg CaO per ml wet resin. The ED treatment removed 61.3% of conductive ashes in the thin juice, and its purity was increased from 90.0% to 92.3% while continuously treating thin juice under the optimal conditions. The modified method has potential to improve the sugar yield in beet sugar industry.