Kelin has focused on the production and sales of activated carbon for decades. We are familiar with the application and common sense of activated carbon.
Ultrapure water is produced through a multi-stage purification process designed to remove the vast majority of impurities—including ions, microorganisms, and other contaminants—from water. Its purity level far exceeds that of ordinary drinking water, such as commercially bottled mineral water or tap water, making it suitable for use in fields such as laboratory analysis, the electronics industry, and pharmaceutical manufacturing.
Activated carbon is an adsorbent material widely utilized in fields such as water treatment, air purification, and desulfurization and denitrification. Its adsorption mechanism primarily relies on its highly developed porous structure and large specific surface area, which enable it to effectively adsorb and remove a wide variety of organic and inorganic substances. The activated carbon adsorption process can be broadly categorized into two types: physical adsorption and chemical adsorption. Physical adsorption depends mainly on van der Waals forces acting between the activated carbon and the adsorbate, whereas chemical adsorption results from chemical reactions occurring between the chemical functional groups on the activated carbon's surface and the adsorbate.
Honeycomb activated carbon is manufactured by blending carbon powder of a specific fineness with additives (such as binders and lubricants), followed by molding and high-temperature curing. Both the choice of additives and the curing process exert a significant influence on the properties of the activated carbon. By loading catalysts—such as certain metals—onto the honeycomb activated carbon substrate, honeycomb activated carbon-based catalysts can be produced. Based on variations in loading methods and procedures, preparation techniques can be broadly categorized into five main types: polymerization-carbon coating, mixed extrusion, impregnation-deposition, ion exchange, and precipitation-deposition. Honeycomb activated carbon is characterized by excellent adsorption performance, a large geometric surface area, superior kinetic properties, and high chemical stability.
Chemically activated carbon is typically produced using cellulose-containing raw materials, such as wood, sawdust, or walnut shells. These materials are also referred to as biomass sources. In the chemical activation process, the raw material is first impregnated with compounds that induce strong dehydration and oxidation. The compounds typically used today are phosphoric acid and zinc chloride, although potassium hydroxide, sodium hydroxide, and calcium chloride have also been utilized in the past.
In the brewing, bottling, and soft drink production processes, activated carbon is mainly used for decolorization, odor removal, taste improvement, and product stability enhancement.
The core requirements for activated carbon in automotive cabin air filters mainly focus on high adsorption performance, low air resistance, and compatibility with composite filtration structures.
For the confined environment of diving equipment, ordinary air-purifying carbon is often insufficient; specially treated "impregnated activated carbon" is required.
The treatment of radioactive gases from nuclear power plants requires differentiation between iodine-based and inert gases: radioactive iodine requires nuclear-grade impregnated activated carbon (TEDA/KI composite impregnated coconut shell base), while inert gases require high specific surface area coconut shell/fruit shell base extended bed activated carbon. Both must be virgin materials and comply with ASME AG-1/ASTM standards.
1. Understanding "Impregnated Activated Carbon" The activated carbon used in gas masks is not ordinary activated carbon, but impregnated activated carbon (also
In the beer and beverage industry, activated carbon is the last critical line of defense for maintaining the flavor of CO2. Its large surface area and selective adsorption capacity effectively capture and remove trace organic matter that causes off-flavors, ensuring the pure and odorless CO2 ultimately added to the product, thus protecting the consistency and high-quality flavor of the brand.
For industrial gas purification, there's no one-size-fits-all activated carbon. Pillared, honeycomb, and spherical activated carbons are the mainstream choices. Which one best suits your application depends primarily on the composition, concentration, and air volume of the gas being treated, as well as your purification process and objectives.
Mercury removal activated carbon is a type of activated carbon that has undergone a special chemical treatment. Chemicals such as sulfur, iodine, or chlorine (most commonly elemental sulfur or iodide) are loaded onto its surface. This allows it to react strongly with mercury vapor (Hg⁰) to form stable mercury compounds (such as mercury sulfide, HgS), effectively and selectively removing mercury from gas or liquid streams.
We focus on the produce of various types of cylindrical, granular, powder and high level impregnated activated carbon.
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