Technology

Technology

Molecular sieving technology for precise industrial gas separation

Molecular sieving technology for precise industrial gas separation

At the core of our technology is a membrane cartridge that continuously separates gas into two streams. Inside, crystal-tuned pores act as molecular sieves, allowing selected molecules through while retaining others.

At the core of our technology is a membrane cartridge that continuously separates gas into two streams. Inside, crystal-tuned pores act as molecular sieves, allowing selected molecules through while retaining others.

Illustration of a UniSieve membrane cartridge and layered membrane sheets

Validated on demanding flue gas

Containerised turnkey delivery

5+ demonstration units

Validated on demanding flue gas

Containerised turnkey delivery

5+ demonstration units

How it works

Molecular sieving
explained

At the core sits UniSieve’s proprietary membrane technology. It enables continuous gas separation at molecular level, using far less energy than conventional methods and allowing valuable components to be recovered and reused.

How it works

Molecular sieving
explained

At the core sits UniSieve’s proprietary membrane technology. It enables continuous gas separation at molecular level, using far less energy than conventional methods and allowing valuable components to be recovered and reused.

Feed gas enters the cartridge

Pressure creates two continuous gas streams

Feed gas enters the cartridge and a pressure difference drives selected molecules through the membrane. The faster-permeating molecules form the permeate stream; the remaining molecules continue as the retentate stream.

INSIDE THE CARTRIDGE

The membrane does the separating

Inside the cartridge, gas flows across layers of molecular-sieving membrane. Smaller target molecules permeate through the membrane, while larger molecules continue along the feed side.

At molecular scale

The pore size determines what passes through

Porous crystalline sieves inside the membrane provide precisely defined openings. By tuning the crystal and its pore size for the target separation, smaller molecules can permeate while larger molecules are retained. Even when they differ by only fractions of an ångström.

How a molecular sieving membrane separates feed gas into permeate and retentate streams
Exploded view of a UniSieve size-selective membrane cartridge and its internal layers
Molecular sieving membrane with a custom pore size separating molecules by kinetic diameter

Feed gas enters the cartridge

Pressure creates two continuous gas streams

Feed gas enters the cartridge and a pressure difference drives selected molecules through the membrane. The faster-permeating molecules form the permeate stream; the remaining molecules continue as the retentate stream.

How a molecular sieving membrane separates feed gas into permeate and retentate streams

Feed gas enters the cartridge

Pressure creates two continuous gas streams

Feed gas enters the cartridge and a pressure difference drives selected molecules through the membrane. The faster-permeating molecules form the permeate stream; the remaining molecules continue as the retentate stream.

How a molecular sieving membrane separates feed gas into permeate and retentate streams

Production team

In-house production

Precision at every stage of production

We produce our membranes in-house, giving us full control over quality, consistency and performance. From tailored development to scalable manufacturing, every membrane is engineered for reliable deployment in demanding industrial applications.

Production team

In-house production

Precision at every stage of production

We produce our membranes in-house, giving us full control over quality, consistency and performance. From tailored development to scalable manufacturing, every membrane is engineered for reliable deployment in demanding industrial applications.

Production team

In-house production

Precision at every stage of production

We produce our membranes in-house, giving us full control over quality, consistency and performance. From tailored development to scalable manufacturing, every membrane is engineered for reliable deployment in demanding industrial applications.

Bring us the separation challenge

We’ll explore the molecular cutoff.

UniSieve propylene recovery pilot system operating beside petrochemical process equipment

Bring us the separation challenge

We’ll explore the molecular cutoff.

UniSieve propylene recovery pilot system operating beside petrochemical process equipment

Bring us the separation challenge

We’ll explore the molecular cutoff.

UniSieve propylene recovery pilot system operating beside petrochemical process equipment

A different separation principle

Same separation challenge.
A very different way of solving it.

High-precision molecular sieving continuously separates CO₂ from flue gas. The captured stream can then be conditioned for reuse, offtake or storage, helping reduce energy demand and strengthen the business case for capture.

A different separation principle

Same separation challenge.
A very different way of solving it.

High-precision molecular sieving continuously separates CO₂ from flue gas. The captured stream can then be conditioned for reuse, offtake or storage, helping reduce energy demand and strengthen the business case for capture.

UniSieve

Separates by precisely defined molecular size

Pressure moves molecules through the membrane

Continuous membrane separation

Compact, modular membrane system

UniSieve

Separates by precisely defined molecular size

Pressure moves molecules through the membrane

Continuous membrane separation

Compact, modular membrane system

Conventional separation

Often separates by boiling point or chemical affinity

Often relies on heating, cooling or solvents

May require regeneration or batch-like cycles

Typically larger and more infrastructure-intensive

Conventional separation

Often separates by boiling point or chemical affinity

Often relies on heating, cooling or solvents

May require regeneration or batch-like cycles

Typically larger and more infrastructure-intensive

Tell us what you’re trying to improve. We’ll explore what’s possible.

Share the separation challenge you’re dealing with today. We’ll help assess where molecular sieving could improve recovery, capacity, efficiency or emissions and what that could mean for your process.

Tell us what you’re trying to improve. We’ll explore what’s possible.

Share the separation challenge you’re dealing with today. We’ll help assess where molecular sieving could improve recovery, capacity, efficiency or emissions and what that could mean for your process.

Tell us what you’re trying to improve. We’ll explore what’s possible.

Share the separation challenge you’re dealing with today. We’ll help assess where molecular sieving could improve recovery, capacity, efficiency or emissions and what that could mean for your process.