Vitamin C Extraction

Vitamin C Extraction

Vitamin C, also known as ascorbic acid, is a catalyst in cell oxidation-reduction reaction. It becomes oxidized vitamin C after releasing two hydrogen atoms. When there is a hydrogen donor, dehydroascorbic acid can accept two hydrogen atoms to form ascorbic acid, getting involved in the body's metabolism and increasing the body's resistance to infection. It is used to prevent ascorbic acid and resist infectious diseases, promoting wound and fracture healing, and using as an adjunct therapy.

1. Feed Condition

2. Production Process

The vitamin C production process can be divided into four parts, namely fermentation (sorbitol is fermented into gulonic acid in two steps), extraction (extract gulonic acid from the fermentation broth), transformation (transform gulonic acid into vitamin C) and purification (purify vitamin C). The combination membrane system is used to pretreat gulonic sodium broth, and continuous ion exchange technology is employed to remove sodium ions and achieve continuous conversion of Vc-Na.

In the process

(1) In the vitamin C production process, resin is used frequently. Gulong acid solution is directly taken as the feed for the continuous ion exchange system. The technological process in this stage is:

The continuous ion exchange system is alkalization of cologne acids. Through the continuous ion exchange system that is filled with strongly acidic cation resin, cologne acid exchanges hydrogen and sodium ion in the resin in the resin tank, and the effluent is the Vc sodium solution. The resin that has been exchanged will rotate into a regeneration zone with the system. In the regeneration zone, after the sodium bicarbonate is regenerated, the resin can re-enter the exchange zone in order to transform cologne acids into Vc sodium.

(2) Vc sodium solution will be directly taken as feed for the continuous ion exchange system. The process in this section is:

The continuous ion exchange system is to acidize Vc sodium. Through the continuous ion exchange system that is filled with strongly acidic cation resin, Vc sodium exchanges hydrogen and sodium ion in the resin in the resin tank, and the effluent is the Vc solution. The resin that has been exchanged will enter into the regeneration zone with the system. In the regeneration zone, after the sodium bicarbonate is regenerated, the transformed resin re-enters the exchange zone in order to continue to remove sodium ions in Vc sodium.

3. Advantages of Continuous ion exchange System:

1)        The product composition and concentration can maintain better;

2)        A good degree of automation, sequential operation, stable running and avoid manual errors;

3)        The device is compact, easy to install, covers substantially fewer areas;

4)        Drastically reduce the amount of resin and lower production costs;

5)        Reduce the amount of wastewater and save chemicals and eluent

4. Operating Cost