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Fuctional Fiber Adsorption Capacity
Aug 01, 2017

Fuctional Fiber Adsorption capacity

Conventional activated carbon is an activated porous carbon, in the form of powder or granules, while the activated carbon fibers are fibrous, the fibers are filled with micropores, the adsorption capacity of organic gases than granular activated carbon in the air several times higher Several times in the aqueous solution 5 to 6 times higher, the adsorption rate of 100 to 1000 times faster! There is no exact value, which is related to the type of activated carbon fiber, production process and so on. It is a new generation of activated carbon after the adsorption material, it is only used for nearly 20 years, only a few countries in the world to produce. Its products can be silk, paper, carpets, cloth and other forms of activated carbon fiber market price of 400,000 / ton, is the activated carbon ten times to several times (coal activated carbon prices in the 10,000 / ton, coconut Shell activated carbon prices in the 20,000 / ton). But because of its very light weight, the cost of its products is only slightly increased only. In the industry to use its superior adsorption capacity to recover organic solvents, clean air, water purification.

ACF (carbon fiber) is the third-generation new type of adsorbent material after the widely used powdered activated carbon and granular activated carbon. It is made of fiber as raw material. It has the advantages of large specific surface area, moderate pore size, uniform distribution, fast adsorption, Advantages; widely used in water purification, air purification, aviation, military, nuclear industry, food and other industries; activated carbon fiber and activated carbon, two tan words are different, the former with stone word, said a class of fiber containing carbon , And non-carbon fiber (such as glass fiber) relative to the latter without stone word, said the specific substances, such as coal, coke and so on. Activated carbon fiber should be understood as "active + carbon fiber" rather than "activated carbon + fiber". As the study of activated carbon fiber is still in the initial stage, the adsorption mechanism of many substances is not clear, still in the laboratory research stage, the industrial application is not widely, so its name is not clearly defined, and now the general "activated carbon fiber "And" activated carbon fiber "general.

Structure editing

The fiber diameter of the activated carbon fiber is 5 ~ 20μm, the specific surface area is about 1000 ~ 1500m2 / g, the average pore diameter is 1.0 ~ 4.0nm, and the micropores are evenly distributed on the fiber surface. Compared with the activated carbon, the pore size of the activated carbon fiber is small and uniform, the structure is simple, the adsorption rate of the adsorbed small molecule is fast, the adsorption speed is high, and the adsorption is easy. And the adsorbent has a large contact area, and can be evenly contacted and adsorbed, so that the adsorbent material can be fully utilized. High efficiency, and has a variety of fibers, felt, cloth and paper and other fine position, the pores directly on the surface of the fiber, the adsorbate reaches the adsorption of the diffusion path is short, and its own surface area than the inner surface area of two orders of magnitude higher The For some macromolecules or particulate matter, such as dioxin, dust, etc., the volume has been close to or even greater than the activated carbon fiber microporous volume, it is difficult to be adsorbed, compared with the more active charcoal advantage.