262025-02
Environmental Applications of Activated Carbon
How activated carbon controls air emissions and cleans wastewater: the environmental appli
Applications / Air Purification
Air Purification Activated Carbon
Industrial VOC control or air purifier? Different specs entirely.
Selection Logic
| Scenario | Requirement | Recommended | Key Spec |
|---|---|---|---|
| Industrial off-gas / VOC treatment | Benzene-series & organic vapor removal | Gas-phase adsorption carbon | Iodine ≥1000, benzene adsorption ≥450 |
| Air purifier / protection carbon | Formaldehyde, odor, harmful gas | Granular / pellet carbon | Iodine ≥1000, high CTC activity |
| Spray / chemical workshop odor | Pressure-tolerant, fixed-bed fill | High-hardness granular carbon | Hardness ≥98 |
Scenario Guide
Industrial Off-Gas → High-Iodine Gas-Phase Carbon
For benzene, toluene, xylene, formaldehyde and other organic gases, use high-iodine (≥1000) and high benzene-adsorption (≥450) coconut carbon, filled in fixed-bed adsorbers.
Air Purifier → Granular / Pellet Carbon
For household purifiers and gas-phase protection canisters, look at iodine and CTC activity; choose granular or pellet by the equipment structure.
Key Parameters
◆
Iodine Number
Organic-vapor adsorption capacity; ≥1000 is the premium gas-phase grade.
◆
Benzene Adsorption
Benzene-series removal efficiency; ≥450 mg/g is the benchmark.
◆
CTC
Carbon tetrachloride value — measures gas-phase adsorption capacity; higher is better.
◆
Hardness
Crush-resistance in fixed beds; ≥98%.
Quick Selection Chart
| Your Situation | Recommended | Product |
|---|---|---|
| Industrial off-gas / VOC treatment | Air purification carbon (iodine ≥1000, benzene ≥450) | Air Purification Activated Carbon |
| Air purifier / protection carbon | Air purification carbon (granular/pellet, by equipment) | Air Purification Activated Carbon |
| Spray / chemical workshop odor | Air purification carbon (high-hardness ≥98) | Air Purification Activated Carbon |
Recommended Products
No products match these filters — contact us for a custom grade.
FAQ
What spec matters most for VOC removal?
Benzene adsorption (≥450 mg/g) and iodine value (≥1000) reflect gas-phase adsorption capacity; CTC value further grades adsorption for organic vapours.
Can the same carbon serve industrial off-gas and an air purifier?
Both are gas-phase, but the demands differ — industrial fixed beds need crush resistance (hardness ≥98%), while purifier fills prioritise adsorption capacity and equipment fit. Choose granular or pellet by the equipment structure.
What is CTC value and why does it matter?
CTC (carbon tetrachloride value) measures gas-phase adsorption capacity; a higher CTC means more organic vapour held per unit of carbon.
When should air-purification carbon be replaced?
It depends on contaminant load and operating conditions — when breakthrough is detected, the carbon is replaced or regenerated. Monitoring the treated air tells you when.
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