The GraniteFuel O₂ Generator System provides a controlled, on-site source of oxygen for use in biogas conditioning, catalytic oxidation, and polishing processes. By supplying a reliable stream of high-purity oxygen, the system supports precise oxidation reactions used in contaminant control, including hydrogen sulfide (H₂S) and volatile organic compound (VOC) removal. This eliminates dependence on bulk gas delivery and improves plant autonomy, safety, and cost efficiency.
Designed for integration with GraniteFuel’s H₂S Removal and VOC and Siloxane Removal Systems, the O₂ Generator delivers consistent oxygen flow at the exact purity and pressure required for continuous process operation. It is suitable for both biogas and renewable natural gas (RNG) facilities, enabling accurate and efficient oxygen dosing for oxidation-based contaminant management.
Key Features and Benefits of the O₂ Generator System
On-site oxygen production
The system generates oxygen directly from ambient air using pressure swing adsorption (PSA) or membrane separation technology. This provides a self-sustaining oxygen source without the logistics or cost of cylinder delivery.
Consistent purity and pressure control
Automated controls maintain stable oxygen purity and output pressure, ensuring reliable dosing for contaminant oxidation and supporting uniform process conditions in downstream systems.
Optimized for biogas and RNG applications
The O₂ Generator System is engineered to deliver oxygen precisely matched to the requirements of H₂S oxidation and VOC destruction processes, supporting stable reaction performance without overfeeding or energy waste.
Compact and modular skid design
Each system is delivered as a fully assembled skid with compressor, oxygen generator, storage receiver, and controls preinstalled. The modular layout allows easy installation and scalable capacity for future expansion.
Reduced operating cost and improved safety
By eliminating bottled or bulk gas handling, the system minimizes safety risks and operational costs. On-site generation ensures a constant oxygen supply for continuous plant operation.
Integrated monitoring and control
Sensors and control modules communicate directly with GraniteFuel’s automation platform, providing real-time oxygen purity, flow, and pressure feedback for seamless coordination with other conditioning systems.
O₂ Generator System Applications in Biogas and RNG Projects
Agricultural Biogas and Farm Digesters
In farm-based biogas upgrading plants, the O₂ Generator System provides a steady oxygen source for H₂S oxidation processes. This enables reliable sulfur removal without chemical overuse, reducing consumable costs and maintenance frequency.
Wastewater Treatment and Municipal Facilities
Wastewater plants often use oxygen injection for biological odor control and gas polishing. The O₂ Generator ensures consistent oxygen delivery for both oxidation and aeration systems, supporting stable biogas treatment performance.
Landfill Gas Conditioning and Recovery
In landfill gas applications, controlled oxygen dosing supports oxidation of residual contaminants such as siloxanes or hydrocarbons. On-site generation ensures uninterrupted supply without reliance on delivered gas cylinders.
Each system is sized and configured for the project’s flow rate, target oxygen purity, and pressure requirements, providing reliable operation under variable site conditions.
Integration with Other GraniteFuel Systems
The O₂ Generator System interfaces directly with GraniteFuel’s H₂S Removal, VOC and Siloxane Removal, and O₂ Removal Systems to maintain precise control over oxidation and polishing reactions. It connects through the same unified control platform used across all GraniteFuel systems, enabling coordinated process management and safety interlocks.
When paired with the Process Gas Compression System and Gas Separation System, the O₂ Generator ensures that all oxidation and polishing steps operate under ideal gas conditions, improving efficiency and reliability across the full upgrading process.
Common O₂ Generator Questions and Answers
The system uses either pressure swing adsorption (PSA) or membrane separation technology to extract oxygen from ambient air. This process delivers oxygen at controlled purity and flow rates suitable for biogas oxidation and polishing systems.
On-site oxygen generation eliminates the need for cylinder or bulk deliveries, reducing cost, logistics, and safety risks. It ensures continuous supply for oxidation reactions critical to H₂S and VOC removal.
Yes. The system communicates with GraniteFuel’s integrated control network to adjust oxygen output based on process demand, maintaining safe and efficient oxidation performance without manual intervention.
Contact GraniteFuel Engineering to learn how our O₂ Generator System can provide a reliable, cost-effective oxygen source for your biogas conditioning and RNG upgrading operations.