What is activated carbon?

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What is activated carbon? activated carbon

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dingxinda9

Posted 21 December 2020 - 08:47 AM

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The adsorption capacity of activated carbon has a certain relationship with the water temperature and water quality. The higher the water temperature, the stronger the adsorption capacity of the activated carbon from the columnar activated carbon manufacturer; if the water temperature is higher than 30°C, the adsorption capacity will reach the limit and may gradually decrease. When the water quality is acidic, the adsorption capacity of activated carbon for anionic substances is relatively weak; when the water quality is alkaline, the adsorption capacity of activated carbon for cationic substances is weakened. Therefore, the pH of water quality is unstable, which will also affect the adsorption capacity of activated carbon.

These carbon-containing materials are converted into activated carbon by pyrolysis under high temperature and certain pressure in an activation furnace. During this activation process, huge surface area and complex pore structure are gradually formed, and the so-called adsorption process is carried out in these pores and on the surface.

The adsorption principle of activated carbon is: a layer of balanced surface concentration is formed on the surface of the particles, and then organic impurities are adsorbed into the activated carbon particles, and the adsorption effect at the initial stage of use is very high. But over time, the adsorption capacity of activated carbon will weaken to varying degrees, and the adsorption effect will also decrease. carbon powder for sale If the columnar activated carbon manufacturer has turbid water in the aquarium and high organic content in the water, the activated carbon will quickly lose its filtering function. Therefore, activated carbon should be cleaned or replaced regularly.　

The size of activated carbon particles also affects the adsorption capacity. Generally speaking, the smaller the activated carbon particles, the larger the filtration area. Therefore, the powdered activated carbon has a large total area and good adsorption effect, but the powdered activated carbon can easily flow into the aquarium with water, which is difficult to control and is rarely used. Granular activated carbon is not easy to flow due to particle formation, and impurities such as organic matter in the water are not easy to block in the activated carbon filter layer. Its adsorption capacity is strong and it is easy to carry and replace.　

In addition to physical adsorption, chemical reactions often occur on the surface of activated carbon. Activated carbon not only contains carbon, but also contains a small amount of oxygen and hydrogen in the form of chemical bonds and functional groups, such as carboxyl groups, hydroxyl groups, phenols, lactones, quinones, and ethers. The oxides or complexes contained on these surfaces can chemically react with the adsorbed substances, and thus combine with the adsorbed substances to aggregate on the surface of the activated carbon. Take a typical example: in the water treatment process, activated carbon can react with the chlorite in the water to change the chlorite into the form of chloride ions, so as to achieve the purpose of removing chlorite from the water, so that the water is no longer unpleasant. Disgusting taste and smell. https://www.granular...ted-carbon.com/