Our Innovation: Closed-Loop & Self-Sustaining Carbon Capture

 

Patent 1: The Closed-Loop Hybrid-Sorbent Carbon Capture & Mineralization Process

(Indian Patent Application No. 202331061319, filed April 2024)

 

This breakthrough technology captures CO₂ from both atmospheric air and industrial emissions using a hybrid sorbent system and a contactor-less reactor design.

Instead of relying on energy-intensive amine scrubbing or costly chemical separation, our process uses:

• Calcium oxide (CaO) as a solid sorbent

• Sodium hydroxide (NaOH) (or potassium hydroxide) as a liquid sorbent

These two interact synergistically to form a hybrid sorbent film that reacts with CO₂ to produce solid calcium carbonate (CaCO₃) — a stable, storable mineral — while regenerating NaOH in situ.

 

The Closed-Loop Advantage

1. Hybrid sorbent synergy: The liquid sorbent captures CO₂ while the solid sorbent regenerates it automatically.

2. No contactor required: The CaO pellets themselves act as the reactor surface — simplifying design and cutting costs.

3. Continuous circulation: The system recycles unreacted materials, eliminating chemical waste and enhancing efficiency.

4. Carbon mineralization: CO₂ is transformed into CaCO₃ — a stable solid with industrial applications (cements, fillers, polymers).

5. Ambient operation: The process runs at low temperature without heating, dramatically reducing energy demand.

 

This innovation achieves what most carbon capture methods cannot — high efficiency at low energy cost, while producing commercially valuable byproducts that make capture economically viable.

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Patent 2: The Self-Sustaining Carbon Capture Process

(Filed August 2024)

 

Building upon our hybrid-sorbent work, this invention introduces a renewable electricity–powered carbon capture loop based on sea salt electrolysis. It combines circular chemistry with renewable power to achieve net-negative emissions.

 

The Process:

1. Electrolysis of Seawater Salt (NaCl):
   Renewable energy drives the breakdown of NaCl into sodium hydroxide (NaOH), hydrogen (H₂), and chlorine (Cl₂).

2. CO₂ Absorption:
   NaOH reacts with CO₂ from air or flue gases to form sodium carbonate (Na₂CO₃) and sodium bicarbonate (NaHCO₃).

3. CO₂ Release & Recycling:
   Chlorine gas is purged into the solution to release pure CO₂ for compression and storage while regenerating NaCl.

4. Self-Regeneration:
   A transition metal oxide converts sodium hypochlorite (NaOCl) back to NaCl and oxygen, maintaining a closed circular flow.

 

This process is fully renewable, chemically circular, and self-sustaining — making it one of the few carbon capture systems globally capable of operating without fossil energy and without generating secondary waste streams.