Impregnated Carbon works by enhancing the natural adsorption capabilities of activated carbon through the addition of specific chemical agents. These chemicals, such as sulfur, potassium hydroxide (KOH), or silver, are infused into the porous structure of the activated carbon during the impregnation process. This modification allows the activated carbon to target and remove specific contaminants more effectively than regular activated carbon.

Various types of impregnants:

Metals/metal salts: silver (Ag) for antibacterial, iodine (I₂) for mercury adsorption, copper oxide (CuO) for desulfurization.

Acid and alkali reagents: potassium hydroxide (KOH) for adsorption of acidic gases (such as CO₂, H₂S), phosphoric acid (H₃PO₄) for enhanced organic adsorption.

Catalysts: platinum (Pt) and palladium (Pd) for catalytic oxidation of VOCs.

Product parameter

• KOH Impregnated Coal Based Carbon

CTC Adsorption Rate: 50-95(v/v)

Iodine Value: 800-1200 (mg/g)

KOH or NaOH Impregnation:3-12 (g/cc) 

H2S Break Through Capacity :0.14(g/cc) 

• NaOH Impregnated Coal Based Carbon

CTC Adsorption Rate: 50-95(v/v)

Iodine Value: 800-1200 (mg/g)

KOH or NaOH Impregnation :3-12 (g/cc) 

H2S Break Through Capacity:0.14 (g/cc)

• KI/Potassium Iodide Impregnated Coal Based Carbon

CTC Adsorption Rate: 60-75(v/v)

Iodine Value: 1000 (mg/g)

KI Impregnation :2-5(%)

H2S Break Through Capacity:014 (g/cc)

• Sulfur Impregnated Coal Based Carbon

CTC Adsorption Rate: 60-75(v/v)

Iodine Value: 1000 (mg/g)

Sulfur Impregnation:10-2000 (%)

• Phosphoric Acid (H2PO3) Impregnated Coal Based Carbon

CTC Adsorption Rate: 60-75(v/v)

Iodine Value: 1000 (mg/g)

H2PO3 Impregnation:5-12 (%) 

• Potassium Permanganate Impregnated Pelletized Coal Based Carbon

CTC Adsorption Rate: 50-95(v/v)

Iodine Value: 800-1200 (mg/g)

Potassium Permanganate (KMnO4): 4(%) 

H2S Capacity:0.10 (g/cc)

Applications

1. Gas purification

Deodorization: KOH impregnated carbon adsorbs hydrogen sulfide (H₂S) and ammonia (NH₃).

Air filtration: iodized carbon captures mercury vapor, and silver carbon inhibits microbial growth.

2. Water treatment

Heavy metal removal: sulfur impregnated carbon selectively adsorbs mercury (Hg²⁺) and lead (Pb²⁺).

Dechlorination: ferrous salt impregnated carbon reduces residual chlorine (ClO⁻).

3. Industrial catalysis

Precious metal (Pt/Pd) impregnated carbon catalyzes the oxidation and decomposition of volatile organic compounds (VOCs).

4. Protective equipment

Impregnated carbon (such as CuO+CrO₃) in gas masks filters hydrogen cyanide (HCN) and phosgene (COCl₂).

5. Energy and environmental protection

Amine impregnated carbon captures carbon dioxide (CO₂) for carbon sequestration technology.