On-Site Oxygen Generation vs. Liquid Oxygen for Biogas Plants
Biogas plants that rely on delivered liquid oxygen or cylinders tie a continuous biological process to a delivery schedule. Generating oxygen on-site removes the logistics entirely: no deliveries, no cylinders, no interruptions.
Supply security for a continuous process
Biological desulfurization runs as long as your digester produces gas. With delivered oxygen, supply depends on truck schedules, vendor contracts, and site access — a particular challenge for rural and remote biogas sites. An on-site plant produces oxygen from ambient air at your fence line, on demand.
Cost structure you control
Delivered oxygen is a perpetual operating expense that scales with usage and hauling distance. An on-site plant converts that recurring cost into equipment you own — purchased outright or leased-to-own over 5 or 7 years — with electricity as the main operating input. ON2 provides budgetary pricing for both ownership paths on a single quote.
Specifications that match biogas requirements
ON2 containerized oxygen plants deliver 90–95% oxygen purity — the range typically specified for biological desulfurization — with delivery pressure adjustable from 0 to 50 psi to match your digester headspace or injection point. The insulated, climate-controlled container is engineered for year-round outdoor operation from −50°C to +50°C, proven in deployments from Yellowknife, Canada to New Delhi, India.
Patented vacuum-cycle technology
Every 100 seconds, a vacuum sweep purges heat, humidity, and contaminants out of the system — no external air dryers and no sieve degradation. The plant runs on demand: it produces oxygen when your process needs it and goes to standby when it doesn't, unlike conventional PSA generators that typically run continuously whether oxygen is needed or not. The technology is patented, with additional patents pending.
What's included
- 90–95% oxygen purity for biological desulfurization
- Delivery pressure adjustable from 0 to 50 psi
- Proven outdoor operation from −50°C to +50°C
- Plug-and-play containerized plant — no building required
- Runs on demand; standby when oxygen isn't needed
- Direct purchase or lease-to-own over 5 or 7 years
Frequently asked questions
What does an on-site oxygen plant need to run?
Electric power and ambient air. The containerized plant generates oxygen on demand at your site and goes to standby when the process doesn't need it — there are no deliveries or storage vessels to manage.
Can we lease the oxygen plant instead of buying it?
Yes. ON2 offers lease-to-own over 5 or 7 years alongside direct purchase, so you can spread the cost into predictable payments and keep capital available for the rest of the project.
What oxygen purity do ON2 plants deliver for biogas desulfurization?
ON2 containerized oxygen plants deliver 90–95% oxygen purity, the range typically specified for biological hydrogen sulfide removal in anaerobic digesters. Purity and flow are confirmed against your gas volume and composition during quoting.
Can the plant sit outdoors year-round?
Yes. The insulated, climate-controlled container is engineered for year-round outdoor operation from −50°C to +50°C, proven in deployments from northern Canada to India. It arrives as a complete plug-and-play plant — no building required.
Compare the numbers for your site
Tell us your current oxygen usage and delivery costs and we'll put an on-site plant quote next to them — purchase or lease-to-own.