A powder that takes the gases out of the air
An adsorbent that binds SO₂, NOx, CO and CO₂ on contact.
What it is
What the adsorbent is
Filters stop particles. They do not stop sulphur dioxide, nitrogen oxides, carbon monoxide or carbon dioxide; those pass straight through a bag filter or a HEPA.
The Bhagirath adsorbent binds these gases at ambient temperature, dry, with no water or effluent. Spent media is replaced on a schedule and handled under the site’s waste authorisation.
Indian Patent No. 468407
Granted 2023
Compared with other sorbents
Why not zeolites, amines or activated carbon?
Each has a place. For a small plant or a roadside unit, the question is cost per unit of gas captured and what you do with the sorbent afterwards.
| Sorbent | Structure | In practice |
|---|---|---|
| Zeolites | Crystalline mineral cages | Selective but moisture-sensitive; costly to make and to regenerate |
| Amine solutions | Reactive liquid chemistry | Need heat to regenerate; corrosive; produce liquid waste |
| Metal-organic frameworks | Engineered porous frameworks | Very high capacity on paper; expensive and mostly laboratory-scale |
| Activated carbon | Porous carbon surface | Good for organics, weak for acid gases; saturates and needs replacement |
| Bhagirath adsorbent | Proprietary powder | Binds SO₂, NOx, CO and CO₂ at ambient conditions; low cost |
Bhagirath’s own characterisation, from the Pureva technical note; not an independent comparison.
Not sure the powder fits your gas?
Send a recent stack monitoring report or describe the exhaust. We will say whether the adsorbent fits and what a test would involve.