Impregnated Activated Carbon
Manufacturer & Supplier
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 standard activated carbon infused with a reactive chemical — KOH, sulfur, silver, KMnO₄, KI, H₃PO₄, or CuO/MgO — that chemically reacts with a target contaminant. This adds chemisorption on top of physical adsorption, letting it capture gases like H₂S, mercury vapor, formaldehyde, and ammonia that plain carbon cannot hold. The right impregnant is chosen by target gas and operating conditions.
- KOH / NaOH
- H₂S, SO₂, acid gas
- Sulfur / KI
- Mercury vapor
- Silver
- Bacteria (drinking water)
- KMnO₄
- Formaldehyde, VOC
Related: KOH — H₂S · Sulfur — Mercury · Silver — Antibacterial · KMnO₄ — VOC · KI — Mercury/Iodine · CuO/MgO — Hydrides · K₂CO₃ — Low-Corrosivity H₂S · H₃PO₄ — Ammonia/Amines
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
View Details →Sulfur Impregnated
Mercury capture in coal-fired power plants, waste incineration, chlor-alkali
View Details →Silver Impregnated
Antibacterial water purification, point-of-use drinking water, medical-grade filtration
View Details →KMnO₄ Impregnated
Formaldehyde, ethylene, VOC removal, odor control, indoor air quality
View Details →KI Impregnated
Mercury vapor & radioactive iodine removal from flue gas, nuclear off-gas
View Details →Phosphoric Acid Impregnated
Ammonia, amine, and alkaline gas removal from industrial exhaust
View Details →K₂CO₃ Impregnated
H₂S and SO₂ acid gas scrubbing with far lower corrosivity than caustic KOH
View Details →CuO / MgO Impregnated
HCN, arsine (AsH₃), phosphine & acid gas removal from syngas and semiconductor exhaust
View Details →Impregnant Selection Guide
| Impregnant | Base Carbon | Target Pollutant | Industry |
|---|---|---|---|
| KOH / NaOH | Coal Pellet Φ4mm | H₂S, SO₂, HCl | Biogas, Natural Gas, Landfill |
| Sulfur (S) | Coal Pellet / Granular | Mercury (Hg⁰) vapor | Power Plants, Incineration, Chlor-Alkali |
| Silver (Ag) | Coconut Granular | Bacteria, pathogens | Drinking Water, POU, Medical |
| KMnO₄ | Alumina / Coal Pellet | Formaldehyde, VOC, ethylene | HVAC, Cold Storage, Museums |
| KI | Coal Pellet / Granular | Mercury, radioactive iodine (I-131) | Flue Gas, Nuclear Off-Gas |
| H₃PO₄ | Coal Pellet Φ3–4mm | Ammonia (NH₃), amines | Chemical, Composting, WWTP |
| K₂CO₃ | Coal Pellet Φ4mm | H₂S, SO₂ (low corrosivity) | Biogas, WWTP, Flue Gas |
| CuO / MgO | Coal Pellet / Granular | HCN, arsine (AsH₃) | Syngas, Semiconductor |
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
Product Lines
Related Products
Inside Our Impregnation Facility
Uniform pellet substrate and on-site technical inspection at every batch — our engineers walk customers through the impregnation line, sampling protocol, and COA verification before shipment.
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
What is impregnated activated carbon?
Which impregnant should I choose for H₂S removal?
Can you customize the impregnation rate?
What is the shelf life of impregnated carbon?
Do you provide technical support for selecting the right product?
Custom Impregnation Solutions
Tell us your target gas, concentration, and flow rate. Our engineers will recommend the optimal formulation.
Discuss Your Project