What are the factors that affect the adsorption speed of activated carbon in reverse osmosis edi ult

What are the factors that affect the adsorption speed of activated carbon in reverse osmosis edi ultrapure water equipment?

by:Ocpuritech     2021-04-07
What are the factors that affect the adsorption rate of activated carbon in reverse osmosis edi ultrapure water equipment? Author: Water is life among the people can not do without things, water is indispensable in industrial production, edi ultra-pure water reverse osmosis equipment designed for use purified water, highly purified water designed by. The activated carbon in the reverse osmosis edi ultrapure water equipment plays an important role in its operation and purification process. The removal of sediment particles and some adsorbed foreign matter in the water requires activated carbon. However, what are the factors that affect the adsorption speed of activated carbon? 1. During the diffusion process of the liquid film, there is a fixed solvent film around the adsorbent particles. When the solution and the activated carbon move relative to each other, the solvent liquid film does not move with the solution. The adsorbate first passes through the liquid film to reach the activated carbon. The outer surface, so the adsorption speed is related to the diffusion speed of the liquid film. The diffusion rate of the liquid film is proportional to the first power of the concentration of the solution. The higher the concentration, the faster the diffusion rate. For a certain quality of activated carbon, the external diffusion is proportional to the first power of the external surface area (liquid film area) of the activated carbon. Because the external surface area and the particle diameter are less square and inversely proportional, if the particle switch is the same, the film diffusion speed is proportional to the particle The diameter is inversely proportional. The diffusion speed of the liquid film is also related to the degree of agitation of the liquid around the activated carbon particles. Increasing the relative speed between the liquid and the particles can make the thickness of the fixed liquid film on the particle surface thinner and accelerate the speed of the liquid film diffusion. 2. The diffusion process in the pores of activated carbon. After the adsorbate is transferred to the outer surface of the activated carbon, only a small part of it is adsorbed on the outer surface, and most of it continues to enter the micropores inside the activated carbon. This process is called intra-micropore diffusion. The diffusion rate in the micropores depends on the fluidity of the adsorbate in the micropores, which is related to the structure and distribution of the activated carbon and the size and structure of the adsorbate molecules. The diffusion rate of micropores is less affected by the concentration of the solution and the size of the outer surface area of u200bu200bthe particles. 3. During the adsorption reaction process on the inner surface of the micropore, the adsorbate is adsorbed on the inner surface of the micropore.
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