The decolorization principle and steps of activated carbon are as follows

(1) the temperature of activated carbon is 75-80 ℃;

(2) the actual effect of decolorizing activated carbon in water is stronger than that in strong polar solvent, but it is poor in non-polar solvent;

(3) in general, it is better to use at ph3-6;

(4) in general, the addition amount is 1 / 1000 to 3 (or 5);

(5) the decolorization time is generally 30-60min;

(6) there are many types of activated carbon, such as carbon for sugar, carbon for oil, etc. choose one suitable for your application.

Its structure is stable and the energy needed for adsorption is small to facilitate regeneration. Activated carbon is used in oil, beverage and food decolorization, drinking water decolorization and deodorization, gas separation, solvent recovery and air conditioning. It is used as catalyst carrier and adsorbent of gas mask. The decolorization effect of activated sugar in water was the strongest. Generally, adding 0.1-3% (w / V) and stirring for 30-60 minutes, the particle size of sugar decolorizing activated carbon has an effect on the decolorization time, and the actual decolorization effect of activated carbon produced by different manufacturers and different production and processing methods is quite different. The decolorization temperature and pH value should be determined according to the properties of your products.