Impregnated
Activated Carbon
Chemically enhanced carbon for targeted gas removal. KOH, KI, sulfur, and custom impregnations for H₂S, mercury, and acid gases.
⚡ Quick Answer
Impregnated activated carbon is coal-pellet or coconut-granular carbon loaded with active chemical agents — KOH, NaOH, KI, K₂CO₃, KMnO₄, CuO/MgO, or sulfur — at 5–20% by weight. Each impregnant targets a specific contaminant through chemisorption: KOH/NaOH for H₂S and acid gases (capacity 0.15–0.30 g/cm³), KI for mercury and radioactive iodine, KMnO₄ for formaldehyde, and sulfur for elemental mercury. Iodine number 400–900 mg/g, hardness > 90%, steam-regenerable.
- Impregnants
- KOH · NaOH · KI · S · KMnO₄
- H₂S Capacity
- 0.15 – 0.30 g/cm³
- Loading Rate
- 5 – 20% by weight
- Hardness
- > 90%
Related: All Specialty Carbon · KI Impregnated (Mercury) · KOH Impregnated (H₂S) · Get a Quote
Product Overview
Impregnated activated carbon combines physical adsorption with chemical reaction to achieve superior removal of specific target gases. By infusing the carbon with reactive chemicals, we create a dual-mechanism adsorbent that can remove contaminants that standard carbon cannot effectively capture.
Our impregnation facility can process both pellet and granular carbon with a wide range of chemicals. We offer standard formulations as well as custom impregnation to match your exact application requirements.
Impregnation Types
KOH / NaOH Impregnated→
H₂S, SO₂, HCl, acid gas removal from biogas, natural gas, landfill gas
KI Impregnated→
Mercury vapor removal from flue gas, natural gas, industrial exhaust
Sulfur Impregnated→
Mercury capture in coal-fired power plants, waste incineration
Silver Impregnated→
Antibacterial water treatment, point-of-use filters, bacteriostatic carbon
KMnO₄ Impregnated→
Ethylene removal, formaldehyde removal, odor control
K₂CO₃ Impregnated→
Acid gas scrubbing, H₂S and SO₂ removal with lower corrosivity
CuO / MgO Impregnated→
HCN, arsine (AsH₃), phosphine & acid gas removal from syngas and semiconductor exhaust
Phosphoric Acid Impregnated→
Ammonia and alkaline gas removal
Common Applications
- Biogas H₂S desulfurization
- Natural gas sweetening
- Landfill gas treatment
- Mercury removal from flue gas
- Waste incineration emission control
- Indoor air quality (formaldehyde)
- Semiconductor fab exhaust
- Odor control systems
Technical Specifications
| Base Carbon | Coal pellet / Coconut granular |
| Forms | Pellet (Φ0.9–8mm) & Granular (4×8–12×40) |
| Impregnants | KOH, NaOH, KI, K₂CO₃, KMnO₄, CuO, MgO, S |
| H₂S Capacity | 0.15 – 0.30 g/cm³ (KOH type) |
| Iodine Number | 400 – 900 mg/g |
| pH | 9 – 12 (alkaline types) |
| Moisture | < 5% |
| Impregnation Rate | 5 – 20% by weight |
| Hardness | >90% |
| Bulk Density | 0.40 – 0.60 g/cm³ |
Response within 24 hours
Impregnation Grades
Related Products
Why Choose Hojee
Factory Direct
No middlemen. Direct from our 3 production bases. Best prices guaranteed.
Quality Tested
Every batch tested with full COA. ISO 9001 certified. SGS/BV third-party testing.
Custom Specs
Custom particle size, iodine value, packaging, and branding. MOQ 3 tons.
Fast Delivery
7-10 days standard. Expert logistics team handles all export documentation.
Packaging Options
PP woven bags
Standard export, palletized
Jumbo bags
Bulk with pallet, forklift ready
Super sacks
Large-scale industrial
OEM packaging
Your brand, free design
Frequently Asked Questions
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Custom Impregnation Solutions
Tell us your target gas, concentration, and flow rate. Our engineers will recommend the optimal formulation.
Discuss Your Project