How to identify activated carbon
The activated carbon is made of coconut shell and has tetrachlorination activity. The polysorb activated carbon filter used in the filter is more than 60%. The outer frame can be made of waterproof paperboard, galvanized iron frame or aluminum frame and stainless steel. Different activated carbon materials can be selected according to environmental requirements.
Such as: activated carbon particles, activated carbon non-woven fabric, activated carbon foam and plate type activated carbon filter. It is suitable for chemical, electronic, pharmaceutical, food, hospital and other industries. Activated carbon particles can be supplied in whole package, or made into metal frame, or made according to customer requirements. The activated carbon non-woven fabric used for air filtration can be made into plate filter screen or supplied in whole roll.
- The activated carbon is made from coconut shell and has tetrachlorination activity of more than 60%.
- Polysorb activated carbon filter screen is used for the filter screen.
- The outer frame can be made of waterproof paperboard, galvanized iron frame or aluminum frame and stainless steel.
- According to the environmental requirements, choose different materials of activated carbon materials, such as: activated carbon particles, activated carbon non-woven fabric, activated carbon foam and plate activated carbon filter.
- Suitable for chemical, electronic, pharmaceutical, food, hospital and other industries.
- Activated carbon particles can be supplied in whole package, or made into metal frame, or made according to customer requirements.
- The activated carbon non-woven fabric used for air filtration can be made into plate filter screen or supplied in whole roll.
Identification of activated carbon
In order to improve the adsorption performance of activated carbon, we have to make as many pores as possible on the activated carbon. The more pores, the looser the activated carbon, and the lighter the relative density. Therefore, a good activated carbon will feel lighter. In the case of the same weight packaging, the volume of a good activated carbon will be much larger than that of a poor activated carbon.
- Look at the bubbles
It is very interesting to put a small amount of activated carbon into water. Due to the water permeation, water will gradually immerse in the pore structure of activated carbon, forcing air in the pore to discharge, thus creating a series of extremely small bubbles. It is very interesting to pull out a small bubble line in the water, and at the same time, it will emit the bubble sound of silk. The more intense this phenomenon occurs and the longer it lasts, the better the adsorptivity of activated carbon is.
- Look at the decolorization ability
Another performance of the adsorption capacity of activated carbon is the decolorization capacity. Activated carbon has the magical ability to turn colored liquid into light or colorless, which is actually caused by the adsorption of pigment molecules in colored liquid by activated carbon.
Because of this characteristic, activated carbon is widely used in the production of brown sugar to white sugar in the field of sugar industry. Take two transparent cups, put pure water into one cup, and then drop a drop of red ink (any pigment that is easy to observe but does not change the nature of water can be used here, such as blue ink, printer color ink, but ink and carbon ink can not be used). After mixing evenly, pour half of the color water into another cup for comparison.
Put the activated carbon into the colored water, the amount should reach half or more of the water, so the effect will be more obvious. After standing for 10-20 minutes, compare with the contrast water sample, under the same conditions, the stronger the decolorization effect, the better the adsorption of activated carbon.
Although there are many kinds of activated carbon in the aspect of appearance and application, it has a common characteristic, that is, “adsorption”. The reason for the adsorption of activated carbon is that it has developed pore structure. Like the sponge we have seen, under the same weight, sponge can absorb more water than other objects, and the reason is that it has developed pore structure.
But the pore structure of activated carbon is invisible to the naked eye, because they only have 1 × 10-12mm-10-5mm, not much larger than a molecule. It is hard to imagine how well-developed the pores of activated carbon are. If one gram of activated carbon is taken and all the pore walls inside are expanded into a plane, the area will reach 1000 square meters (that is, the specific surface area is 1000 m2 / g).
The main factors affecting the adsorptivity of activated carbon depend on the developed degree of internal pore structure. Only a large number of activated carbon with pore diameter slightly larger than the diameter of toxic and harmful gas molecules have strong adsorption capacity.
In order to meet this requirement, the material selection and processing (pore forming and activation) of activated carbon are very strict. Activated carbon is fully in line with the gas phase adsorption, the particle size is 20-40 mesh, the specific surface area is large, the internal gap is developed, the density is small, the handle is light, the bubble phenomenon is fierce, the same weight and volume is larger, which can effectively purify the indoor air.
It can absorb odorous, toxic and various harmful gases in the air, especially formaldehyde, benzene series, TVOC, CO (carbon monoxide), NH3 (ammonia), O3 (ozone) Cl2 (chlorine) in the air. It has unique adsorption purification and catalytic ability, and is widely used in decoration pollution removal, filter and air conditioning equipment.
Important tips: consumers don’t know enough about activated carbon, and often mistake the unactivated charcoal such as bamboo charcoal, charcoal and coconut shell charcoal for activated carbon; Secondly, the low adsorption value of carbon carving and ordinary activated carbon are regarded as high-quality activated carbon. Remind you to distinguish, don’t be deceived.