How should we choose activated carbon?

  • Carrie Ge
    December 2, 2020
    1.Look at the bubbles: Put a small amount of activated carbon into the water. Due to the penetration of water, the water will gradually immerse into the pore structure of the activated carbon, forcing the air in the pores to expel, thereby generating a series of extremely small bubbles, which are pulled out in the water. coal based active carbon It is very interesting because of the tiny bubble lines and the sound of bubbles at the same time. The more severe this phenomenon occurs and the longer the duration, the better the adsorption of activated carbon.

    2.Look at the decolorization ability: Another performance of the adsorption capacity of activated carbon is the decolorization ability. Activated carbon has the magical ability to turn colored liquids into light or colorless. This is actually caused by activated carbon adsorbing the pigment molecules in the colored liquid. of. Because of this characteristic of activated carbon, it is widely used in the production process of brown sugar to white sugar in the sugar industry.

    Take two transparent cups, put pure floating water in one cup, and then drop a drop of red ink (here you can use any kind of pigment that is easy to observe but does not change the nature of the water, such as blue ink, printer color ink, However, ink and carbon ink cannot be used), and after stirring, pour half of the colored water into another cup for comparison.

    Put activated carbon into colored water, the amount should reach half or more of the water, so that the effect will be more obvious. After standing for 10-20 minutes, compare with the comparative water sample. Under the same conditions, the stronger the decolorization effect indicates the adsorption of activated carbon. The better the sex.

    3.Iodine value; Iodine value is a poor performance of activated carbon, fruit shell, bamboo charcoal; the iodine value of coal is in the hundreds, and the iodine value of activated carbon raw materials ranges from 800, 850, 900, 950, 1000, 1100 mg/g The adsorption capacity is also different! The cost and price are also different! Activated carbon with the same iodine value only has the best effect with coconut shell.

    4.Hand weighing: In order to improve the adsorption performance of activated carbon, the only way to make pore structure on activated carbon is as much as possible. activated carbon manufacturer The more pores, the looser the activated carbon and the lighter the relative density. Therefore, a good activated carbon feels better. Relatively light, in the case of the same weight of packaging, activated carbon with good performance will be much larger than inferior activated carbon.