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Iodine Value: Generally ranging from 300 to 600mg/g. The level of the iodine value reflects the adsorption capacity of the activated carbon for small molecular substances. The higher the iodine value, the stronger the adsorption performance for small molecular organic pollutants, iodine element, and so on.
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Particle Size: Common diameter specifications include 1.5mm, 3.0mm, 4.0mm, 6.0mm, etc. Different particle sizes are suitable for different application scenarios and equipment requirements. For example, activated carbon with a smaller particle size is commonly used in some gas-phase adsorption processes where a higher adsorption speed and a larger contact area are required. While larger particle sizes may have more advantages in liquid-phase adsorption when fluid resistance and filtration performance need to be considered.
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Specific Surface Area: Usually reaching 500 - 1200m²/g. The huge specific surface area provides sufficient space for adsorption, enabling it to accommodate a large number of adsorbate molecules and greatly enhancing the adsorption effect.
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Strength: It has relatively good mechanical strength. The compressive strength can generally reach above 80 - 95%. It can withstand certain pressures and frictional forces, is not easily broken during the filling, transportation, and use processes, ensuring the structural integrity and the stability of its adsorption performance, and reducing the adverse impact of the dust generated by the broken activated carbon on the adsorption system and subsequent treatment processes.
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Ash Content: The ash content is relatively high, approximately between 5% and 15%. The ash mainly comes from the mineral components in the coal raw material. Although it will affect the purity and adsorption performance of the activated carbon to some extent, its impact can be minimized through reasonable process control and post-treatment.
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Industrial Waste Gas Treatment: Widely used in the purification treatment of waste gases generated in industries such as chemical engineering, pharmaceuticals, coating, and printing. It can effectively adsorb harmful gases such as benzene series compounds (such as benzene, toluene, xylene), volatile organic compounds (VOCs), formaldehyde, hydrogen sulfide, and ammonia in waste gases, reducing the emission concentration of waste gases and minimizing the pollution to the atmospheric environment so that it complies with environmental protection emission standards.
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Air Purification: It can be used in products such as indoor air purifiers and air conditioner filters to adsorb harmful substances such as odors, formaldehyde, and benzene in the air, improving indoor air quality and creating a healthy and comfortable living and working environment for people.
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Oil and Gas Recovery: In places like gas stations, oil depots, and refineries, it is used to recover volatile oil and gas, preventing oil and gas leakage from polluting the environment, while realizing the recovery and utilization of oil and gas resources, improving resource utilization rates, and reducing enterprise operating costs and safety risks.
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Drinking Water Purification: In tap water treatment plants and household drinking water purifiers, coal-based columnar activated carbon can remove residual chlorine, odors, chromaticity in water, as well as some heavy metal ions (such as mercury, lead, cadmium, etc.) and organic pollutants (such as pesticide residues, polycyclic aromatic hydrocarbons, etc.), improving the safety and taste of drinking water and meeting people's healthy drinking water needs.
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Sewage Treatment: For industrial wastewater and domestic sewage, it can adsorb harmful substances such as chemical oxygen demand (COD), biochemical oxygen demand (BOD), organic dyes, phenols, and cyanides in sewage, reducing the pollution degree of sewage and playing an important role in the advanced treatment of sewage and the reuse of reclaimed water, contributing to the recycling of water resources and environmental protection.
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Excellent Adsorption Performance: The well-developed microporous structure and large specific surface area endow it with a strong adsorption ability for pollutants in various gases and liquids. It can quickly and effectively remove target substances and performs excellently in adsorbing low-concentration pollutants, with remarkable purification effects.
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Good Physical and Chemical Stability: Under normal temperature and pressure, coal-based columnar activated carbon has good chemical stability and is not easy to react with adsorbates, being able to maintain its adsorption performance for a long time. Meanwhile, its physical structure is stable, can withstand temperature changes, pressure changes, and fluid impacts within a certain range, is not easy to deform or break, has a long service life, and reduces the costs and workload of frequently replacing adsorbents.
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Appearance Shape: It has a regular cylindrical shape. This shape is beneficial for uniform filling and distribution in adsorption equipment, ensuring that gas or liquid can evenly pass through the activated carbon bed layer and improving the adsorption efficiency. Meanwhile, the columnar structure is also convenient for operation and management in industrial production and use processes, such as filling, unloading, and cleaning.
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Pore Structure: It has an abundant pore system, including micropores (with a pore diameter less than 2nm), mesopores (with a pore diameter between 2 - 50nm), and a small number of macropores (with a pore diameter greater than 50nm). Micropores are the main sites for adsorption and have a strong adsorption effect on small molecular substances. Mesopores play an important role in adsorbing large molecular substances and facilitating the diffusion of adsorbates inside the activated carbon. Macropores mainly serve as channels and reduce fluid resistance, enabling adsorbates to smoothly enter the internal pore structure of the activated carbon.
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Density Characteristics: The bulk density is generally between 0.4 and 0.6g/cm³. The relatively low bulk density makes the activated carbon have a certain porosity after filling, which is conducive to the circulation of gas and liquid, reduces fluid resistance, and is also convenient for transportation and storage.
Chemical Characteristics
- Chemical Stability: Under general acid-base environments and normal temperature and pressure conditions, coal-based columnar activated carbon has stable chemical properties and will not react with most common gases and liquids, being able to maintain the stability of its adsorption performance. However, under the action of high temperature, strong oxidants (such as potassium permanganate, potassium dichromate, etc.), or strong acids and alkalis (such as concentrated sulfuric acid, concentrated sodium hydroxide, etc.), the chemical structure of the activated carbon may change, resulting in a decline in its adsorption performance.
FAQ
What particle sizes do you offer for your coal-based columnar activated carbon?
We provide coal activated carbon in particle sizes of 1.5mm, 3.0mm, 4.0mm, and 6.0mm. This variety enables you to select the optimal size for your specific adsorption equipment and process needs, ensuring efficient contact and performance in gas or liquid phase applications.
Can you customize columnar activated carbon products for specific industrial needs?
Yes, we offer customization services for our columnar activated carbon to align with your operational requirements. Whether it’s adjusting particle size, iodine value, or packaging, we work closely with you to tailor solutions that meet the adsorption performance and mechanical strength needed in your industry.
How do you ensure the stability and quality of your coal-based activated carbon during transportation?
Our coal activated carbon is manufactured to have high mechanical strength, typically above 80–95% compressive strength, minimizing breakage and dust generation during handling and transport. We also apply strict quality control and packaging standards to maintain product integrity upon delivery to your site.
What support do you provide for installing and maintaining activated carbon adsorption systems?
We assist clients with technical guidance on the use of our coal based activated carbon, including advice on filling, unloading, and cleaning columnar carbon beds. Our team can support system commissioning and recommend lifecycle management practices to maximize adsorption efficiency and bed longevity in your facilities.
