GAC- Activated Carbon:

Activated carbon English Active Carbon abbreviation GAC, molecular formula is C, relative molecular weight: 12.0, activated carbon is a black powder, granular or pellet amorphous with porous carbon, the main component is carbon, but also contains a small amount of oxygen, hydrogen, sulfur, nitrogen, chlorine. Also has the fine structure of graphite, but the grain is small, irregular accumulation between layers. With rich pore structure and large specific surface area (500 ~ 1500㎡/ g), has a strong adsorption performance.

Structure characteristics of activated carbon:

Activated carbon is a kind of porous carbon material, it has a highly developed pore structure, is an excellent adsorbent, in the structure has two major characteristics: one is the internal and surface pore developed. The pore diameter is divided into three types: large pores (φ≥50nm), accounting for about 10-30% of the total pore volume; Micropores (φ≤2nm) account for about 60 ~ 90% of the total pore volume; Mesopore is also called transition hole (2nm≤φ≤50nm), accounting for about 5 ~ 7% of the total pore volume. The average pore diameter is about 1.5nm. Two is the specific surface area, namely 1 grams of activated carbon particles surface area and the sum of all pore area, the general activated carbon is 500㎡/g to 1500㎡/g, super activated carbon up to 3000㎡/g (about the football field area). The more developed the pore structure and the larger the specific surface area, the stronger the adsorption function.

What is the principle of activated carbon adsorption?

1. Relyon its unique pore structure, activated carbon is a kind of microcrystalline carbon material, which is mainly made of carbon containing materials with black appearance, developed internal pore structure, large specific surface area and strong adsorption capacity. There are a large number of micropores invisible to the naked eye in activated carbon material. 1 gram of activated carbon material contains micropores, and the surface area can be as high as 500-1500 square meters after its expansion, and the surface area is higher for special purposes. In other words, in a particle of activated carbon the size of a grain of rice, the internal surface area of the micropores could be the size of a living room. It is these highly developed, such as the pore structure of human capillaries, so that activated carbon has excellent adsorption performance.

2. The force of adsorption between molecules is also called "van der Waal attraction". Although the speed of the molecule is affected by temperature and material, it is always moving in the micro environment. Due to the mutual attraction between molecules, when a molecule is captured into the pore of activated carbon pore, due to the mutual attraction between molecules, will lead to more molecules are attracted until the pore of activated carbon is filled.

Advantages of activated carbon:

1, air purification: mainly adsorbed in the air formaldehyde, benzene, toluene, xylene, ammonia, radon, chlorine, sulfur dioxide, methane, carbon monoxide, carbon dioxide, etc. 2, water purification: mainly adsorption removal of water sediment, rust, colloid, residual chlorine, chroma and all kinds of organic matter and all kinds of peculiar smell. 3, remove the odor: new cars generally contain a lot of harmful substances, unpleasant pungent smell, with activated carbon can be effectively removed, and activated carbon can be applied to new furniture placed in cabinets, drawers, refrigerators medium effective odor removal.