(1) Pharmaceutical industry

Decolorization of pharmaceutical intermediates;

Adsorption filtration in the process of production water preparation;

Decolorization of raw materials;

Decolorization, heat removal, refining and purification of high purity test (needle) agent.

In the pharmaceutical industry, in addition to using it to decolorize and deodorize, it can also improve the stability of drugs and avoid side effects, that is, improve the purity of drugs, because some of these activated carbon itself is also very high purity requirements.

Antibiotics, sulfa drugs, alkaloids, vitamins, and hormones, etc. are produced through a process that involves activated carbon for decolorization, deodorization, removal of colloids, improvement of purity and yield, and enhancement of stability. Especially, injection needles must be treated with activated carbon. The liquid for injection contains a substance called "pyrogen" (pyrogenic substance), which causes fever if not removed. If the patient is injected with it, they will feel cold, followed by an increase in body temperature and an acceleration of pulse. This pyrogen can be removed by activated carbon filtration device.

After activated carbon adsorbs heat source, pigments, and impurities from the injection liquid, most products can improve the clarity of the liquid after using activated carbon. However, attention should be paid to the method and conditions when using it to avoid any negative impact on the product. For example, the activated carbon used should first be checked to see if it meets the requirements for pharmaceutical use, as poor-quality activated carbon carries a lot of impurities such as fibers, particles, and various metal ion impurities. Choosing the appropriate adsorption method based on the requirements of the formulation can effectively improve product quality. For example, by adding the activated carbon in stages and heating and boiling it before cooling to the critical adsorption temperature (45-50°C) for filtration, the adsorption capacity of the activated carbon can be enhanced. Activated carbon may produce "gel dissolution" and desorption in alkaline solution, contaminating the liquid and increasing impurities, while its adsorption capacity is strong in acidic solution. Therefore, activated carbon adsorption should be controlled to keep the pH of the liquid at a weak acid level to improve the adsorption effect. The appropriate amount of activated carbon should also be determined to ensure the adsorption effect while avoiding excessive adsorption of the raw material, which would result in a decrease in product content and an increase in production costs.