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Activated Carbon

Activated Carbon

Activated carbon, also known as activated carbon, is a group of carbon-based materials that have a porous surface and are used in the water and wastewater treatment industry due to their high absorption power. These carbon materials are produced in different chemical and physical ways and according to their size and type, they are used in different parts of the treatment plants. safe comfort; The provider of water and wastewater treatment chemicals will continue to introduce active carbon and will describe the characteristics of each type of active carbon powder and granules, and their price and how to buy them.

What is activated carbon?

As a result of burning the bark of coconut and walnut trees, charcoal is produced, which is a source of carbon. These carbon and charcoal materials are converted into activated carbon in case of contact with water vapor and also chemicals under special environmental and temperature conditions. The meaning of carbon being active in these materials is to increase their absorption capacity, which causes the negatively charged ions to be absorbed by the positively charged carbon. In addition, activated carbon has a porous surface with various pore sizes, and for this reason, they can be used in carbon filters and other water treatment equipment to prevent the passage of colloidal and suspended particles in water.

Types of activated carbon

Materials based on active carbon can be divided into different groups based on their size and appearance, and accordingly, the application of these materials will be different. Among the types of active carbon that are produced by chemical and physical methods from trees, the following options can be mentioned:

Powdered Activated Carbon (PAC)

Activated carbon materials that are in the form of powder have the smallest particle size. This group of materials has particles with sizes of about 0.18 mm and their absorption power is high. Due to the very high adsorption power of negatively charged pollutants, PAC powdered active carbon is used in carbon filters.

Granular Activated Carbon (GAC)

The next group of activated carbons have large size and dimensions and are used more like blocks. In a general comparison, the absorption power of granular or granular activated carbon is less than that of powder, and they are mostly used to prevent the passage of pollutants in the treatment plant.

Extruded Activated Carbon (EAC)

As a result of the binding of powdered active carbon, these materials become cylindrical and rod-shaped and are used under the name of rod-shaped active carbon or extruded. This group of carbon materials is mostly used for absorption in the gas phase of purification.

In addition to the above three types, activated charcoal ACC is also used in some industries. These active carbons have a fiber-like structure and are not used for water purification.

Microporous, mesoporous and macroporous activated carbon

Activated carbon has a great variety in terms of structure and overall surface, and the pores on them are different. Based on the type of porosity and pores on the surface, they can be divided into three groups: micropores, macropores, and mesopores. Due to the differences in the type of pores and their size, the applications of each group are different. For example, microporous activated carbon, which is mostly used to remove taste and odor, has one nanometer pores. The type of meso-porosity has pores of 1 to 25 nm, and macro-porosity has a pore diameter of 25 nm. Macroporous activated carbons are used to absorb more gas and liquids.




What is activated carbon made from?

Activated carbons used in different industries are different in terms of raw materials, and in this sense, they can be divided into different groups made with cellulose materials, polymer materials, and carbon materials. One of the most widely used raw materials in the production of active carbon is wood, fruit peel, and bone. A special type of this activated carbon is produced with carbon raw materials and bituminous coal is one of the most widely used. Another type of activated carbon is made with polymer materials. Recycled plastic materials are examples of polymer materials that can be used to make active carbon.




How to produce activated carbon

The process of production and preparation of activated carbon is carried out by different chemical and physical methods, and finally the output of these two methods will be different in terms of characteristics and application. The methods of producing these materials are as follows:


Production of activated carbon with chemicals

As is clear from the name of this method, acidic or alkaline materials such as sulfuric acid, potassium carbonate and sodium are used to produce carbon materials. One of the most important features of carbon materials produced in this way is the creation of activated carbon materials with large pores, which are mostly used to prevent the passage of suspended particles in water and sewage. The wood of coconut and walnut trees, etc., when mixed with sulfuric acid and other chemicals, will turn into pulp and will be heated in an environment with a temperature of 500 to 800 degrees Celsius.


Production of activated carbon with heat and steam

If the charcoal produced from the wood of trees, etc. is heated in a closed environment with a temperature of 800 to 1100 degrees Celsius, the carbon in them will be activated. Heating and contact with water vapor at high temperature leads to the creation of pores with small and large sizes on charcoal materials that have high absorption power.




Activation method of activated carbon

After selecting the raw materials required for black coal production, which can be cellulosic, carbon and polymer materials, the activation process is carried out with different physical and chemical methods. According to what is the material used to produce activated carbon, the activation process and its physical or chemical nature are different. For example, activation of activated carbon produced with wood is only activated by chemical methods and physical processes are not applicable to them.

Based on this, the activation steps of activated carbon can be described as follows:


Choosing the right raw material; Cellulosic, polymer and carbon raw materials
Choosing the right method for activation according to the type of raw material

Physical activation of activated carbon

Physical activation of activated carbon is done with the help of distillation and heating, and two separate furnaces are considered for production and activation. The activation process in this method is that first the raw material is converted into charcoal by distillation and in the next step, its surface will become porous due to high heat.


Chemical activation of activated carbon

In this method, carbon production and activation is done in a furnace with the help of chemicals such as potassium carbonate, potassium and chloride.


Application of active carbon in water and wastewater treatment

As mentioned, according to the way activated carbon is produced and the appearance and size of the pores on them, they have different characteristics, and accordingly, they are used in different parts of sewage or water treatment. Active carbon materials, which are porous and have small pores, have high absorption power and are used in carbon filters to absorb ions with negative charges.


Granular activated carbon, which have larger sizes, are mostly used in large treatment plants. This group of carbon materials is used as a substrate in sewage and water treatment plants and will prevent the passage of large particles. As a result, it will absorb many materials and pollutants that lead to color and odor changes and the quality of the output of the treatment plant will increase.




Application of activated carbon in agriculture

The high power in ion exchange and the non-production of harmful by-products in these materials have led to an increase in the use of activated carbon in agriculture. This type of carbon is used to remove impurities in pesticides and increases their quality to a great extent. Other uses of these materials in agricultural industries include seed protection. After spraying, a layer of active carbon is placed on them and it protects them from contact with pesticides. In the process of producing pesticides, activated carbon is used as a catalyst and it increases the speed.

In some agricultural fields, activated carbon is used to release nutrients and crops. The required materials are placed on the surface of activated carbon and their release is done over time, and it has a great impact on the quality of agricultural products and the growth of plants and its fertility.

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Application of activated carbon in pharmaceutical industries

Activated carbon is also widely used in the pharmaceutical industry and is used in the intermediate and final production and purification stages. Considering that activated carbon has a high power to absorb toxic substances, for this reason, when it enters the digestive system of animals, infections and harmful substances are eliminated. It should also be noted that these water purification materials are used in the production stage and increase the quality of color and purity of antibiotics and other pills and drugs.

Reducing the unpleasant smell and taste of pharmaceuticals, syrups and tablets, wastewater treatment are among other cases of using activated carbon in the pharmaceutical industry.


Application of activated carbon in chemical industry

In the chemical industry, the presence of dangerous and harmful gases that are created at different stages of production severely affect human health and the respiratory system. One of the most important uses of activated carbon in the chemical industry is the production of breathing masks. In addition, it plays an important role in the production of compressed air filter as well as the removal of carbohydrates in the production process of various activated carbon chemicals.




Application of active carbon in cosmetics industry

Due to the great power of activated carbon in absorbing pollutants, these materials are used in the production of health and cosmetic creams. Cosmetic creams containing activated carbon will absorb the pollutants accumulated in the pores of the skin and lead to cleansing. In addition, these materials have a high power in whitening teeth, and for this reason, they are also used in the production of toothpaste.




Application of active carbon in petrochemicals

In the process of producing petrochemicals, harmful gases and compounds are created that can cause serious damage to the final product. Activated carbon is used in these industries due to its absorption power and high reactivity and removes these compounds. In addition, the gases required for other steps in the production process of petrochemical products are first stored on active carbon and then released at the appropriate and required time and stage.




Application of active carbon in air purification

One of the main uses of rod or cylindrical active carbon is air purification and removal of pollutants in it. Due to the high power of these materials in absorbing negatively charged ions and establishing a polar bond with them, these materials are used in household and industrial air purifiers.




Application of activated carbon in food industry

Activated carbon is used in the food industry to improve the color of juice and drinks, etc. In addition, these materials have a high power in removing the bad taste of food and advance the purification process at a cheap price. These materials are used in the production of juice, beer, oil and sugar.




The price of activated carbon

Many factors play a role in determining the price of active carbon, the most important of which is the type and size of these materials. The way of production, the size of the pores on their surface, as well as the appearance of these materials will all lead to an increase or decrease in price. It should also be noted that the brand of active carbon materials has an effect on their price. Due to the fact that most of the brands that produce these materials are foreign, therefore, currency fluctuations also affect the price. To inquire about the price, you can contact the sales experts of Ayman Ayman.




Sale of activated carbon by kilo and wholesale

Activated carbon produced by different domestic and foreign brands have differences in specifications and, accordingly, they have different applications. In the process of selling activated carbon, Asaisafza Ayman provides free consultation and introduces a product suitable for the type of application desired by the customer. It should be noted that this group offers active carbon for sale in kilos and in bulk and sends it all over Iran.


Buy activated carbon or active carbon

Due to the widespread use of activated carbon materials, Asaish Afza Ayman, which is one of the largest players in the field of equipment and chemicals needed in the water and wastewater treatment industry, has made it possible to purchase these materials. The active carbon materials provided by this collection belong to different brands and are different in terms of price. To know the type, size and production method of activated carbon materials provided by this group, you can contact the experts of Asais Afza Ayman.


Active carbon brands

Swedish Jacobi activated carbon

To buy foreign activated carbon, one of the most reliable brands that offers high-quality products is Jacobi Sweden. Jacoby Sweden’s active carbon is generally more expensive than other brands, and its purity and quality are at a high level. The products of this brand are offered in different types of granular, rod and powder in different sizes. Among the most widely used Swedish Jacobi activated carbon, granular and rod, we can refer to materials with meshes of 12*40, 8*16, 8*20, and 20*50. It should be noted that the powder type of these materials has 200 mesh and is very useful in water purification. These materials are provided by the industrial group and sent all over Iran.




Chinese Jacobi activated carbon

Among other widely used and best-selling products, we can refer to Chinese Jacobi activated carbon. These materials are at an ideal level in terms of quality and are used for chlorine absorption and dyeing as well as food industries. In general, these products have a cheaper price than the Swedish type and are offered wholesale and retail at a reasonable price in Asaish Afza Ayman.

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Asayesh Afza Imen Company started its activity in the 70s with the aim of providing engineering consulting services in the construction and operation of water and wastewater treatment systems. This group operates by taking possession of the world’s technical knowledge and relying on new engineering technologies in the field of design, construction, installation and commissioning of water (industrial, domestic, swimming pool) and sewage systems.

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