Features of Aosun Carbon Filter
- High adsorption activated carbon provides excellent efficiency in removing odors, VOCs and harmful gases from the air.
- Low airflow resistance design design ensures smooth airflow and reduces the load on the ventilation system.
- Aosun carbon filter has durable metal housing, which offers strong structural
- A variety of sizes are available, which makes it compatible with different ventilation ducts.
Aosun | Professional Carbon Filter Manufacturer in China
Aosun is a leading Chinese manufacturer of carbon filter. Our carbon filter is widely used in HVAC systems, commercial kitchens, laboratories, indoor planting rooms and various industrial ventilation and odor removal systems. It can efficiently adsorb harmful gases and peculiar smells, purify air pollutants, and effectively improve indoor air quality. Our activated carbon filter is made of high-quality activated carbon material, featuring a well-developed pore structure. It possesses strong adsorption capacity, stable performance and environmentally friendly characteristics without secondary pollution. It can operate reliably under various working conditions, has a simple structure, low wind resistance, and ensures smooth air circulation. We offer customization in size, thickness and carbon material configuration to meet different ventilation and purification requirements.It is suitable for residential, commercial, industrial and professional purification scenarios. In addition, our carbon filter complies with international standards and supports certifications including SAA,CE, RoHS and relevant environmental protection test reports.
It is a cylindrical structure, both ends with pipeline interface, and is installed in the ventilation pipe system.
It is a box-type structure and is used in large ventilation or industrial waste gas treatment systems
It is a flat plate structure and is usually installed in a filter frame or air handling equipment
It is a replaceable activated carbon filter material. The activated carbon filter can be replaced after adsorption saturation to restore efficient purification capacity.
What is a Carbon Filter?
Carbon filter is an air filtration device that uses activated carbon as the filtering medium to remove odors, VOCs, organic gases and chemical pollutants from the air through adsorption. After undergoing “activation” treatment, activated carbon will form a large number of microporous structures and possess an extremely large surface area.
How does a Carbon Filter Work?
The polluted air is sucked into the activated carbon filter by the fan and passes through the activated carbon layer. The harmful gases and odor molecules within it will be strongly adsorbed and fixed by the rich microporous structure inside the activated carbon. Finally, the clean and odor-free air flows out from the outlet, and the entire air purification and deodorization process is completed.
Carbon Filter vs HEPA Filter
Carbon filters and HEPA filters are both types of air filters, but they are different in many ways.
Filtration Principle
The carbon filter relies on the well-developed microporous structure inside the activated carbon to capture and lock the gas molecules, odors and organic pollutants in the air through physical adsorption. The HEPA filter uses ultra-fine glass fiber paper as the core filter material and relies on the dense and interwoven fiber filter net to intercept solid particles.
Pollutants Removed
The carbon filter mainly filters gaseous pollutants, including formaldehyde, benzene, VOCs, cooking fumes, odors, industrial waste gas, and other harmful gases. The HEPA filter mainly filters solid particulate matter, such as dust, PM2.5, smoke, pollen, lint, and larger particles.
Filtration Efficiency
The efficiency of the carbon filter mainly depends on the filter material, the thickness of the carbon layer, the contact time, etc. There is no unified standard. The efficiency standard for HEPA air filters is 99.97% at 0.3 microns.
The two are often used together. The activated carbon filter removes harmful gases and odors first, and the HEPA filter then intercepts fine particles, achieving dual purification of gases and particles.
Advantages of Carbon Filter
Excellent Odor Removal
Activated carbon has an extremely large surface area. Generally, the specific surface area of 1 gram of activated carbon can reach 500 to 1500 square meters. The numerous microporous structures can adsorb a large number of gas molecules, thereby improving the filtration efficiency.
Safe and Environment-Friendly
The carbon filter mainly removes pollutants in the air through physical adsorption. During the filtration process, no chemical reactions occur and no secondary pollution is generated. The activated carbon material is natural, safe, and friendly to human and the environment.
Stable Structure
The carbon filter is composed of a housing, a activated filter layer, an inner mesh, a pre-filter layer and connection. The overall structure is simple and there are no complex electronic components, so the failure rate is low. During daily operation, there are almost no issues such as damage or malfunction, and it can operate continuously and stably for a long time.
Easy Maintenance
Its maintenance process is simple and easy to understand, requiring no professional technicians or complex maintenance tools. Ordinary people can operate it. On a daily basis, only regular checks are needed for the saturation of the filter material’s adsorption capacity. Once it reaches saturation, you only need to replace the filter material directly. Its maintenance cost is low, the time consumption is short, and it will not affect the normal operation of the equipment.
Applications of Carbon Filter
Carbon filters play a key role in improving air quality by virtue of their efficient air purification function, and are widely used in various scenarios that require air quality.
Indoor planting room
In indoor planting room, the carbon filter can effectively adsorb the volatile gases produced during plant growth, as well as the irritating substances released by fertilizers and nutrient solutions. It achieves purification through physical adsorption and does not release any chemical substances that could negatively affect plant growth. At the same time, it can continuously maintain the air cleanliness of the cultivation space, providing clean, harmless and suitable air conditions for plant growth.
HVAC ventilation systems
When applied to HVAC ventilation systems, the carbon filter can adsorb formaldehyde, TVOC, odors, harmful gaseous pollutants from the outdoor and indoor airflows, and prevent the circulation and diffusion of odors and harmful gases within the building ventilation ducts. The pure physical adsorption mode does not cause secondary pollution and is highly compatible with the HVAC system. Moreover, it has a low wind resistance and does not increase the energy consumption of the fan during operation. It can also continuously improve the air supply quality of the overall ventilation system, making the indoor air environment fresher and more comfortable.
Commercial Kitchen
When used in a commercial kitchen, the carbon filter can effectively adsorb the cooking-generated smoke and odor, as well as the odors formed during food processing. The purification process does not involve chemical reactions or the risk of open flames, ensuring safety in the high-temperature operating environment of the kitchen. Its stable adsorption capacity can continuously maintain the freshness of the kitchen air, prevent the spread of odors to the surrounding environment, and at the same time reduce the adhesion and corrosion of oily gaseous substances to exhaust and ventilation equipment, helping catering establishments maintain a hygienic and comfortable working environment that meets standards.
Laboratory
In a laboratory setting, the main function of the activated carbon filter is to adsorb the volatile chemical reagent gases produced during the experimental process as well as the odors generated by the experiments, preventing harmful gaseous pollutants from accumulating in the enclosed experimental space. It can effectively reduce the health hazards of harmful gases to the laboratory personnel and ensure the respiratory safety during the experimental operation.
Factory
In the production environment of the factory, the activated carbon filter can adsorb various waste gases generated during industrial production, reducing the concentration of harmful gases in the workshop. It can improve the working environment for frontline workers, protect their health, and at the same time reduce the corrosion and wear of gas pollutants on production equipment and precision components. By adopting a green purification method, the factory can achieve an environmentally friendly production mode.
How to Choose carbon filter?
Choosing the right carbon filter is key to ensuring efficient air purification. Factors such as air volume compatibility, duct size matching, and filter material selection directly affect purification efficiency and service life. The following guide will help you select the most suitable carbon filter based on actual working conditions and application needs.
Air Volume
The air volume of the carbon filter must be compatible with the ventilation system. If the air volume of the activated carbon is too small, it will cause air flow obstruction and a decrease in filtration efficiency. A proper matching of air volume can enable the polluted air to pass through the activated carbon layer at an appropriate flow velocity and ensure gas molecules have enough time to be adsorbed by the microporous structure. It allows the purification performance to be fully exerted, achieving continuous and stable odor removal and gas filtration effects.
Duct Vent
The flange diameter of the carbon filter must match the size of the pipeline. If flange diameter is smaller than the pipeline, it will cause air leakage, which not only leads to the failure of the purification effect but also reduces the working efficiency of the entire ventilation system. If flange diameter is larger than that of the pipeline, it will cause installation difficulties and even require rebuilding the pipeline, increasing the construction cost.
Budget Requirement
The main filter materials of the activated carbon filters include coconut shell carbon and coal carbon. Coconut shell carbon has a good pore structure, strong adsorption capacity and long service life, but it is expensive. It is suitable for places need high requirements for air quality. Coal carbon has abundant raw materials and mature production processes. Although its adsorption capacity and durability are lower than coconut shell carbon, it is lower price and higher cost-effectiveness. It is suitable for places with low purification requirements. You can make a reasonable choice according to your budget and usage needs.
Why Choose Aosun Carbon Filter？
Choose Aosun activated carbon filter for ventilation systems, you can solve the problems of air volume matching, size adaptation and cost control in one stop. We use high-quality activated carbon raw materials and strictly control the structural design, providing standardized and full-size customization services, while taking into account the adsorption efficiency, installation convenience and long-term usage cost. Whether it is for high-end purification scenarios or for the need for high cost-effectiveness, Aosun can offer you a stable, reliable and durable professional purification solution, making your ventilation system operate more efficiently and worry-free.
The carbon filter mainly relies on the microporous adsorption effect of activated carbon to effectively remove volatile organic compounds including formaldehyde, benzene, and TVOC from the air. At the same time, it can also adsorb gaseous pollutants such as cooking fumes, odors, stench, and sulfides. It also has a good removal effect on some organic waste gas and irritating gases.
Yes, the carbon filter will have a certain impact on the airflow of the ventilation system, but it is normal. The airflow resistance mainly comes from the carbon layer in the carbon filter. As long as the thickness of the carbon layer is reasonably selected, it will not hinder normal ventilation. However, if the model does not match air volume and the carbon layer is too thick, which will lead to greater wind resistance and increase the fan load.
The carbon filter usually lasts for 3 years at least. Its lifespan depends on various factors including carbon quality, air flow, and pollutant concentration. In environments with strong odors or volatile organic compounds, the carbon medium may saturate more quickly and need to be replaced earlier. You can replace the filter element to lengthen its lifespan.
It is not recommended. Theoretically, activated carbon can be regenerated after saturation, which is usually achieved through high-temperature or steam regeneration processes. However, only specialized industrial equipment can achieve these methods. In most HVAC and ventilation applications, activated carbon filter is usually replaced rather than reused because replacement is more practical and less costly.
There is no fixed standard for the replacement cycle of the activated carbon filter element. It mainly depends on the gas concentration of the usage environment, the operating time and the air volume conditions. In general scenarios, it is recommended to replace it every 3 to 6 months. In heavily polluted industrial or kitchen environments, this period can be shortened to 1 to 3 months. For indoor ventilation or planting rooms with light usage, it can be extended to 6 to 12 months. When there is a noticeable unpleasant smell, it indicates that the filter element has reached saturation and you need to replace it in time.
The cost of replacing the filter element of a carbon filter usually ranges from 40 dollars to 200 dollars, depending on the filter size, carbon quantity, and application. Small household filters are usually cheaper, while larger HVAC or industrial carbon filters may cost 100 dollars to 300 dollars or even more because they use more activated carbons.
Carbon filters are usually installed in the pipeline ventilation system, either before or after the fan. The air volume of the filter should match that of the ventilation system and it should be sealed well to prevent air leakage. In most installations, carbon filters are directly connected to the pipes using clamps and hoses, ensuring that air can pass through the activated carbon layer, effectively removing odors and VOCs.
No. Carbon filters mainly rely on physical adsorption to remove gas molecules and odors. It doesn’t have the ability to kill or intercept bacteria and viruses. For the control of bacteria and viruses, you can use HEPA filters to intercept tiny pathogens through their dense filters.
Carbon filter is not recommended to be used for a long time in a high-humidity environment. The water moisture will occupy the micropores of the activated carbon, reducing its ability to adsorb gases and odors, which will result in a significant decrease in purification efficiency. At the same time, it is also easy to grow mold in the humid environment, which will shorten the lifespan of the filter element.
The quality of activated carbon is crucial. The higher iodine value and the more developed microporous structure, the stronger the adsorption capacity. The contact time between the air and the carbon layer is also very important. Excessive air volume and rapid flow rate will reduce the purification effect. High humidity in the environment will clog the micropores and significantly weaken the adsorption efficiency. In addition, the thickness of the carbon layer and the filling amount will also affect the filtration efficiency.
