| 摘要 |
PURPOSE:To prepare a seasoning liquid, by adjusting the pH of the Steffen process waste liquid to 4-10 by gaseous CO2 saturation and mineral acid treatment, subjecting the liquid to electrodialysis with an ion exchange diaphragm, and treating with a Cl-type anion exchange resin. CONSTITUTION:Carbon dioxide gas is blasted through the Steffen process waste liquid until the pH of the liquid reaches 10, and the liquid is concentrated to about Bx25-45 deg. with a vacuum evaporator, mixed with a mineral acid such as sulfuric acid, phosphoric acid, hydrochloric acid, etc. to 4-10pH, subjected to the electrodialysis with an ion exchange diaphragm, treated with a Cl-type anion exchange resin, and concentrated again to Bx65-80 deg. with a vacuum evaporator, to obtain the objective seasoning liquid containing amino acids such as glutamic acid, betaine, saccharides, etc. |
