What effect does activated carbon have on the quality of preparation under different conditions?

Effect of Activated Carbon Usage on Preparation Quality

The adsorption effect of activated carbon is better than that of one addition, because when the adsorption and desorption of activated carbon are in equilibrium after adsorption to a certain extent, the adsorption effect has been weakened. Therefore, the best effect of adding activated carbon 2-3 times in the production time of large infusion can obviously improve the quality of the preparation.

Effect of active ash on preparation quality with different PH values

Activated carbon in acid solution (PH：3-5) adsorption is strong, in alkaline solution sometimes appear "glue solution" or desorption, in turn make the impurity in the solution increase, affect the quality of the preparation, so activated carbon had better be activated with acid treatment well after use.

Effect of Activated Carbon on Preparation Quality at Different Temperature

Critical adsorption temperature of activated carbon is 45-50 C, and the adsorption efficiency of activated carbon is poor when the temperature is lower than the critical adsorption temperature. Except for the medicine solution which needs to be refrigerated and inconvenient to heat, it is generally used to heat and boil and adsorb for 20-30 minutes, and when cold to 45-50℃, it is best to complete the decarbonization in a short time, so as to avoid the temperature drop or the desorption effect in the process of placing, so that the impurity of the preparation increases.

Effect of amount of activated carbon on quality of preparation

Amount of activated carbon should be determined according to the quality and variety of raw materials, and the commonly used amount is 0.1%-0.5%(W/N). If the dosage is insufficient, the impurity and pyrogen can not be completely adsorbed, and the dosage is too large, the water-soluble impurity contained in it can cause pollution to the liquid solution and affect the quality of the preparation.