The pore structure, high adsorption capacity and high surface activity and become a unique multi-functional adsorbent, and its cheap and easy to obtain, part of the renewable activation, at the same time it can effectively remove most of the organic matter and some inorganic substances in the waste water, waste gas,
So it is widely used in the world sewage and waste gas treatment, air purification, recovery of rare metals and solvents and other environmental protection and resource recovery and other fields.
Activated carbon is divided into granular activated carbon, powder activated carbon and activated carbon fiber, but because the powder activated carbon has secondary pollution and cannot be regenerated and activated, it is limited to use GAC-granular activated carbon (granular activated carbon)
85%~90% of GAC is used for water treatment and gas adsorption treatment, and its particle size is 500~ 5000U m. The pore structure of GAC is generally a tridisperse pore distribution, which has been obtained according to the International Society of Pure and Applied Chemistry
(IUPAC) Classification Aperture >
Large pores at 50nm, intermediate pores at 2.0~50nm and lt;
Micropores at 2.0nm.
Due to the pore structure of GAC, its adsorption speed is slow and its separation rate is not high. Especially, its physical form makes it inconvenient in application and operation, which limits the application range of GAC
ACF is the third generation of activated carbon products after powdered and granular activated carbon products.
Activated carbon fiber developed in the 1970s is a new and efficient adsorbent with the development of carbon fiber industry.
The characteristics of carbon fiber
yrd coconut activated charcoalACF is a member of the porous carbon family with unique properties. Compared with the traditional granular activated carbon (GAC), ACF has the following characteristics: the pore structure of ACF and GAC is very different, as shown in Figure 1 and Figure 2.
https://www.chinactivecarbon.comThe pore distribution of ACF is basically monodispersed, mainly composed of micropores smaller than 2.0nm, and the pore openings are directly on the surface of the fiber. The diffusion path of the adsorbate to the adsorption site is short, and the fiber diameter is small. Therefore, the contact area with the adsorbed substance is large, which increases the adsorption probability and can be uniformly contacted.
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