Solving One of Carbon Capture’s Most Persistent Challenges: Why Filtration Matters More Than Ever

Before carbon dioxide can be captured, flue gas must be cleaned of particulates, aerosols, and contaminants. In practice, this step is often one of the most challenging:

• Variable particulate loading can lead to equipment fouling
• Contaminants degrade solvents, increasing operating costs
• Moisture and aerosols reduce system efficiency
• Ineffective pre treatment can limit overall capture performance

These issues are not theoretical—they are a primary barrier to reliable, scalable CCUS deployment.

As outlined in Pall’s recent project supported by Emissions Reduction Alberta (ERA), improving upstream filtration is essential to improving the performance and economics of carbon capture overall.

Conventional filtration approaches were not designed for the realities of modern CCUS.

They often struggle to balance competing requirements:

• High particle capture vs. low pressure drop
• Durability vs. cleanability
• Efficiency vs. system stability under fluctuating conditions

In harsh flue gas environments—characterized by high temperature, particulate variability, and chemical complexity—these tradeoffs become more pronounced.

The result is a system-level constraint: filtration becomes the limiting factor in performance, uptime, and scalability

What’s changing now is not just materials—but how filtration systems are designed.

Through additive manufacturing, Pall is developing filtration media that can be engineered specifically for demanding environments. In its ERA-supported project, Pall is combining:

• Patented Large Confined Jet Pulse (LCJP) technology
• 3D printed metal filter media
• A compact, modular, and regenerable system architecture

This combination enables precise control of pore structure and airflow—something that is difficult to achieve using conventional manufacturing methods. 

The result is a system that can:

• Maintain high-efficiency particle removal
• Operate at low pressure drop
• Withstand harsh, variable operating conditions
• Be cleaned and reused, rather than replaced

Together, these capabilities allow operators to move beyond traditional tradeoffs.

One of the most important aspects of the current work is its focus on real-world validation.

Through an engineering-scale pilot at a cement plant in Alberta, Canada—one of the most emissions intensive industrial environments—Pall is testing the system under actual operating conditions.

This matters because:

• Performance in controlled settings does not always translate to industrial environments
• Operators need data-driven confidence before deploying at scale
• Lessons learned in high-intensity environments can translate across industries

The goal is not just demonstration—but scalability and repeatability across applications

Improving flue gas pre treatment may not be the most visible part of the carbon capture value chain—but it is one of the most consequential.

By addressing upstream filtration challenges, companies can:

• Improve system reliability and uptime
• Reduce maintenance and operating costs
• Extend equipment life downstream
• Accelerate CCUS adoption across industries

In other words, better filtration doesn’t just improve performance—it helps make carbon capture more practical, efficient, and scalable.

The energy transition increasingly depends on technologies that can perform reliably under real operating conditions—not just in theory or pilot settings.

Additive manufacturing is enabling a new approach: designing filtration systems that are tailored to the environments they operate in

As these innovations move from pilot to broader deployment, they have the potential to remove one of the key constraints on carbon capture—helping move the technology from promise to practical, industrial-scale solution.