Advantages and Applications of Non-woven Activated Carbon Fiber Cloth

Activated Carbon (AC) is widely used as a porous carbon-containing adsorbent material in fields such as odor removal and separation. With the rapid development of AC, the types have become diversified. Activated Carbon Fiber (ACF) is the third-generation activated carbon product, following powdered and granular activated carbon.

ACF is made from natural or synthetic fibers through carbonization and activation. Its pore size is below 2nm, making it a typical microporous carbon. The combination of irregular structures and narrow spaces creates a rich nano-semiporous space, giving ACF a large specific surface area. ACF contains many large regular structures—heterocyclic structures or microstructures with different functional groups. All these factors give ACF a high surface energy, forming a strong molecular field through the combined action of micropores and pore walls, providing a quasi-high-pressure system where physical and chemical changes of adsorbed molecules occur. This results in shorter diffusion paths for adsorbates to reach adsorption sites compared to GAC, with a greater driving force.

Advantages of non-woven activated carbon fiber cloth

• High adsorption capacity, several to dozens of times greater than GAC.
  

• Fast adsorption speed, very quick in the gas phase, and the adsorption equilibrium can also be reached in the liquid phase. The adsorption rate is ten to a hundred times faster than GAC.

• Easy regeneration, fast desorption speed. It takes only 10 to 30 minutes with 120~150℃ steam or hot air.

• Good heat resistance

• Acid and alkali resistance, with good chemical stability.

• Low ash content

• Good formability, easy to process.

Applications of non-woven activated carbon fiber cloth

• Solvent recovery: Non-woven activated carbon fiber cloth can adsorb and recover benzene, ketones, and petroleum compounds.
  

• Air purification: Non-woven activated carbon fiber cloth can adsorb and purify foul odors, smoke, toxic gases, etc., in the air. It can be used for room, kitchen, and other indoor air purification. Especially for adsorbing volatile organic compounds (VOCs) in new buildings.

• Water purification: Can remove heavy metal ions, carcinogens, odors, mold, bacteria, and decolorize water. It can be used for treatment of drinking water, food industry water, and industrial pure water.

• Deodorizing daily necessities: Used for refrigerator deodorization, preservation of fruits, vegetables, and flowers, production of household water purifiers, cigarette filters, anti-poison and disease-preventing masks, insoles, hygiene and health shorts, and other daily necessities.

• Refining or recovering precious metals, adsorbing radioactive substances, also used as a catalyst carrier, and gas chromatography stationary phase.

• High-temperature resistant and thermal insulation materials.

• Environmental engineering: Treatment of exhaust gas and sewage, sealing and isolation of radioactive places, shielding of radiation equipment, etc.