The mechanism of action of silver-loaded nutshell activated carbon

Product introduction of silver-loaded husk activated carbon:

Silver-loaded nutshell activated carbon is made of nutshell activated carbon with high strength and large adsorption capacity as the raw material to carry silver. It has the functions of sterilization, bacteriostasis, removal of peculiar smell, odor and trace toxic and harmful substances in water. It can also be used for filling large, Small and medium-sized water purifiers, the purified water can be directly consumed.

Silver-loaded husk activated carbon properties:

Silver-loaded nutshell activated carbon is made of nutshell activated carbon with high strength and large adsorption capacity as the raw material to carry silver. It has the functions of sterilization, bacteriostasis, removal of peculiar smell, odor and trace toxic and harmful substances in water. It can also be used for filling large, Small and medium-sized water purifiers, the purified water can be directly consumed.
It is a new technology air purification product that exchanges silver ions into the micropores of bamboo charcoal, and then fixes it at high temperature. The gas is decomposed into carbon dioxide and water, which can effectively eliminate various odors; silver-loaded activated carbon completely changes the shortcomings of traditional adsorption-type air purification products that cannot decompose harmful gases. It is an environment-friendly, no secondary pollution, and excellent performance. Natural air Purify product. The purified water can be directly consumed, and can also be widely used to fill large, medium and small water purifiers and water dispensers. Activated carbon has high-efficiency air purification function, which can create a comfortable and clean environment. Activated carbon is more caring for human health. Activated carbon is an invisible air filter. Activated carbon is a combination of physical adsorption and chemical decomposition. Ammonia, benzene, cigarettes, lampblack and other harmful gases and various odors, especially carcinogenic aromatic substances, activated carbon has a strong adsorption capacity and is a commonly used adsorbent, catalyst or catalyst carrier. The harmful gas is fully contacted, and the activated carbon uses its own pores to absorb harmful gas molecules into the pores, blowing out fresh and clean air. Therefore, activated carbon is inseparable from our daily life.

Analysis of the adsorption principle of silver-loaded fruit shell activated carbon:

  1. the pores of activated carbon have adsorption potential, which is formed by the attractive force between carbon molecules and adsorbed molecules (mainly van der Waals force). The smaller the pore size of the activated carbon surface, the stronger the adsorption potential.
  2. the molecular motion theory:
    1. All objects are composed of molecules or atoms, and there are gaps between molecules (atoms);
    2. Molecules (atoms) are in a state of never-ending and irregular thermal motion, and the molecules collide with each other frequently. There are 109 collisions/S (several billion times); if the number density of formaldehyde molecules close to the studied surface is equal to the number density of formaldehyde molecules in the distance at all times, there are about 2.7×1027 formaldehyde molecules per second (about 2.7×1027). 130㎏) per square meter area; if the indoor formaldehyde concentration reaches 10 times the national allowable standard, that is, 0.8mg/m2, the formaldehyde per second per square meter area will reach 90mg;
    3. There is an interaction force between molecules, which is generally expressed as gravitational force.
  3. the diameter of the colliding molecules should match the diameter of the pores of the activated carbon. If the diameter of the molecules is larger than the diameter of the pores, the molecules cannot enter the pores and are bounced back into the air when they hit the activated carbon; Pores may also run out. The larger the pore size, the greater the probability of running out, and the smaller the adsorption rate; when the molecular diameter is slightly smaller than the pore size, it is difficult for the molecules to escape after hitting the pores, that is, they are adsorbed. The larger the number of adsorbed molecules, the stronger the adsorption capacity.

Application of silver-loaded activated carbon in water treatment:

How to properly treat domestic drinking water to obtain healthy drinking water is the ultimate goal of our water purification. Activated carbon is the best material for water purification. How to improve the performance of activated carbon and maximize its advantages, countries are conducting research on modified activated carbon. Silver-loaded activated carbon is one of them, and France has made new breakthroughs in this field. This article introduces the research results of France in this aspect, in order to attract the attention of my country’s activated carbon industry and water treatment industry.
Activated carbon (GAC) has been widely used in conventional and advanced water treatment. Due to the physical characteristics of activated carbon itself – super strong adsorption capacity, it can be used to absorb unpleasant taste, residual chlorine, decolorization and so on in water. It has become one of the most mature and effective methods for removing organic pollutants from water. A study by Tsinghua University in my country found that activated carbon can also remove mutagenic substances produced by chlorination in water.

Silver-loaded activated carbon is used as a water treatment medium, and the treated water quality has the following characteristics:

It can effectively remove residual chlorine, heavy metals and organic pollutants; the silver on the surface of the activated carbon will not fall off; the taste is significantly improved; the treated water retains natural minerals that are beneficial to the human body; the water quality is alkaline; the dissolved oxygen increases by 30% on average It has the effect of long-term inhibition of bacteria, viruses and algae; especially in the production of bottled water, it can be preserved for a long time without additional ozone disinfection treatment. And the treated water is not easy to scale. It meets the water quality standards of healthy water recognized by domestic and foreign experts.
After the activated carbon is loaded with silver, a trace amount of silver is distributed on its surface, which can play the role of a catalytic active center. This active center can absorb the energy of the environment, activate the oxygen in the air and water adsorbed on the surface of the activated carbon, and generate hydroxyl radicals ( OH) and reactive oxygen ions (O2-), which have strong oxidative power and can destroy bacteria The ability of cells to proliferate to achieve the purpose of inhibiting or killing bacteria.
The technological breakthrough of silver-loaded activated carbon is a major advance in drinking water treatment technology. It provides us with a safe and reliable water purification medium. It not only solves the problem of purification of drinking water, but also solves the problem of storage, preservation and transportation of purified water. This new type of silver-loaded activated carbon has broad application prospects and will surely produce huge economic and social benefits.

Haohaijia granular activated carbon

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