Pharmaceutical Facility Air Quality: Choosing the Right Air Pollution Control System

Unlike facilities that produce the same product day after day, pharmaceutical manufacturers often work with multiple formulations, solvents, and production processes. Mixing, coating, drying, extraction, fermentation, cleaning, and wastewater treatment can all generate airborne contaminants, including:

• VOC emissions
• Solvent vapours
• Chemical odours
• Sulphur compounds
• Organic process gases
• Laboratory exhaust
• Wastewater treatment off-gases

The challenge isn’t simply the number of contaminants, but also how often they change. Batch manufacturing, product changeovers, cleaning cycles, research activities, and fluctuating production schedules can all alter the composition of an exhaust stream, sometimes several times in a single day.

As a result, pharmaceutical facilities need dedicated air pollution control systems that continue performing reliably even as operating conditions and emissions fluctuate.

Not every air pollution control system is equally suited to pharmaceutical manufacturing. While upfront costs are always a consideration, long-term performance often has a much greater impact on operating costs, maintenance demands, and compliance regulations.

While assessing potential solutions, consider the following:

Broad Contaminant Removal
Many technologies work well for one specific contaminant but lose efficiency when air streams become more complex. Facilities producing multiple products often benefit from systems that can treat a wide range of VOCs and odorous compounds without extensive process changes.

Low Maintenance Requirements
Every filter change, chemical refill, and maintenance shutdown adds time and cost. Air pollution control systems with fewer consumables and simpler maintenance requirements help keep production running while lowering long-term operating expenses.

Consistent Performance
As production changes, so do the emissions. Air pollution control systems should handle fluctuating exhaust streams consistently, without constant tuning or process modifications.

Regulatory Compliance
Pharmaceutical manufacturers operate under strict environmental and operational requirements. Air pollution control systems should deliver consistent performance, support emissions compliance, and generate the documentation necessary for inspections, reporting, and internal quality programs.

Several air pollution control technologies are currently used in pharmaceutical manufacturing, each with different strengths, limitations, and maintenance requirements.

Activated Carbon
Activated carbon is an established solution for many VOC applications, particularly where the media can effectively adsorb contaminants. However, adsorption capacity is finite, so carbon must be replaced or regenerated periodically.

Performance varies depending on the contaminant mix, concentration, humidity, and airflow.

Chemical Scrubbers
Chemical scrubbers are commonly used to treat acid gases and other specific chemical contaminants by bringing the exhaust stream into contact with a chemical solution. They can be highly effective for targeted applications but require chemical storage, dosing equipment, wastewater management, and ongoing maintenance.

Photoionization Systems
Photoionization (PI) systems use high-energy ultraviolet light to oxidize VOCs and odorous compounds with a carbon catalyst polishing stage.

Because contaminants are treated before being polished by a carbon catalyst, routine maintenance is typically limited to a system inspection, periodic lamp and catalyst replacement. Photoionization is well suited to facilities seeking broad-spectrum VOC treatment with a compact footprint and relatively low maintenance requirements.

Every pharmaceutical process is different, but most facilities aim for the same outcomes: reliable emissions control, minimal maintenance, predictable operating costs, a compact equipment footprint, and the flexibility to accommodate changing production needs.

Photoionization supports these priorities by treating a broad range of VOCs and odorous compounds without relying on treatment chemicals or disposable media.

With fewer consumables and a relatively simple maintenance routine, the technology can help reduce downtime while providing consistent performance across changing operating conditions.

Confidentiality is standard in pharmaceutical manufacturing. Equipment suppliers are often asked to design air pollution control systems without access to proprietary information about the products being developed or the specific manufacturing processes involved.

Photoionization is well suited to these situations because it treats a broad range of VOCs and odorous compounds regardless of the specific process generating them.

Rather than being designed around a single product or formulation, the technology provides consistent treatment across diverse process emissions, making it a practical option for confidential manufacturing environments.

The right air pollution control system should continue performing even as manufacturing processes evolve. Pharmaceutical facilities often work with changing formulations, variable production schedules, and confidential processes, making flexibility just as important as treatment efficiency.

NeutraTek has supplied four photoionization units for off-gas treatment at a pharmaceutical research facility in the United States. The systems operate at different locations throughout the facility, treating multiple process air streams. Because the work conducted there is confidential, we cannot disclose the specific compounds being treated.

Even so, the installation demonstrates one of photoionization’s key strengths: it provides reliable treatment across a broad range of VOCs and odorous compounds without requiring the system to be tailored to every individual product or formulation.

For facilities evaluating air pollution control systems, that flexibility can reduce complexity, support long-term dependability, and help accommodate changing production needs without compromising treatment performance.

Looking for an air pollution control system that can handle complex or confidential pharmaceutical applications? Contact NeutraTek to learn more about our photoionization technology and discuss your facility’s requirements with our team.

What are air pollution control systems?
Air pollution control systems are engineered technologies that remove or destroy contaminants such as VOCs, odours, particulate matter, and hazardous gases before air is released into the atmosphere.

Why do pharmaceutical facilities need air pollution control systems?
Many pharmaceutical manufacturing processes generate solvent vapours, VOCs, and other airborne contaminants that must be controlled to protect workers, meet environmental regulations, and reduce odour emissions.

What contaminants can photoionization treat?
Photoionization systems effectively treat many VOCs, organic compounds, sulphur compounds, and odorous process emissions commonly found in industrial and pharmaceutical applications.