How to easily identify the adsorption value of Activated Carbon without detecting equipment, our company introduces the following methods for your reference.
1. Directly look at the indicators provided by the manufacturer. The main adsorption indexes of activated carbon are: iodine adsorption value, carbon tetrachloride (CTC) adsorption value, methylene blue adsorption value, iodine adsorption value used to indicate the adsorption capacity of activated carbon for liquid substances, and carbon tetrachloride adsorption value is used to indicate The adsorption capacity of activated carbon for gaseous substances, the methylene blue adsorption value is used to indicate the decolorization ability of activated carbon. The higher the three indexes, the stronger the adsorption capacity of activated carbon. Therefore, when purchasing activated carbon, you can choose the activated carbon suitable for your own use according to your own use and the indicators provided by the manufacturer.
2, look at the volume: to improve the adsorption performance of activated carbon, only as much as possible on the activated carbon on the pore structure, the more the pores, the more loose the activated carbon, the relative density will be lighter, so the good activated carbon feel will be lighter, In the case of the same weight package, the performance of the activated carbon will be much larger than the inferior activated carbon.
3. Look at the bubbles. A small amount of activated carbon is put 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 be discharged, thereby generating a series of extremely fine bubbles, pulling out a small bubble line in the water. At the same time, the sound of bubbles is emitted. The more intense this phenomenon occurs, the longer the duration, and the better the adsorption of activated carbon.
4, see the ability to decolorize. Another manifestation of the adsorption capacity of activated carbon is the ability to decolorize. Activated carbon has the magical ability to turn colored liquids into light or colorless. This is actually because activated carbon adsorbs pigment molecules in colored liquids. 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 water in one cup, and then drop a drop of red ink (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, you cannot use ink and carbon ink. After mixing, pour half of the colored water into another cup for comparison. Put the activated carbon into the colored water, the amount should reach half or more of the water, so the effect will be more obvious. After standing for 10-20 minutes, it is compared with the comparative water sample. Under the same conditions, the stronger the decolorization effect is, the adsorption of activated carbon is indicated. The better.
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