Maximize Biogas Yield
Maximize Anaerobic Digestion Stability & Produce High-Value Circular Fertilizers
Extract high-strength nitrogen from digestate, chicken litter, and landfill leachate. Prevent ammonia toxicity in your digesters while converting waste liability into certified organic fertilizer inputs with OTAR®.
Maximize Biogas Yield
Maximize Anaerobic Digestion Stability & Produce High-Value Circular Fertilizers
Extract high-strength nitrogen from digestate, chicken litter, and landfill leachate. Prevent ammonia toxicity in your digesters while converting waste liability into certified organic fertilizer inputs with OTAR®.
Is High Ammonia Killing Your Digester Performance?
Nitrogen-rich feedstocks are essential for high-yield biogas production, but as they break down, they release high concentrations of Total Ammoniacal Nitrogen (TAN). This leads to:
Inhibited Methane Production: Reduced biogas output and lost energy revenue.
Process Instability: Frequent “sour” digesters and costly maintenance.
Regulatory Hurdles: Difficulty meeting nitrogen discharge limits.
This is a critical challenge for facilities processing:
Poultry Manure & Litter
Cow & Dairy Manure
Slaughterhouse, Food waste, Food Processing Industry
Landfill & Municipal waste
OTAR® : A Proven Low-Carbon Solution
The Circular Economy Solution for Waste-to-Energy
Engineered for OMRI-Listed Potential & CDFA Organic Input Material (OIM) Compliance Framework.
OTAR® turns agricultural waste sidestreams into clean, high-concentration 18-20% aqueous ammonia or liquid ammonium sulfate legal for commercial organic farming distribution.
The OTAR® platform is a modular, physical-thermal system designed to integrate directly with existing AD plants and landfill infrastructures.
By cleanly stripping high-strength ammonia from digestate and leachate sidestreams, it unlocks maximum methane yields while seamlessly pairing with downstream PFAS concentration and destruction technologies.
Boost Biogas Efficiency
Lowering ammonia levels allows for higher organic loading rates.
Energy Neutral Operation
OTAR® utilizes waste heat from your existing biogas engines (CHPs).
Resource Recovery
Don’t just treat waste—produce commercial-grade ammonium sulphate or ammonium hydroxide for use as fertilizer.
OTAR® at a Glance : Optimized for Thermal Resource Recovery
Our technology uses a low-temperature thermal process to move ammonia from the liquid phase to the gas phase. Depending on your site requirements, we offer several configurations:
Variant 3: Produces 40% concentration Ammonium Sulphate—ideal for direct agricultural resale.
Variant 4: Features advanced heat recycling for maximum thermal efficiency using CHP waste heat.
Calculate your potential biogas recovery with OTAR®
Understand the business case for your wastewater treatment plant.
Our online calculator helps you model:
Typical cost savings from replacing conventional methods with OTAR®
Reduction in chemical usage compared to standard treatment
Carbon-emission savings and compliance with environmental regulations
ROI, payback period, and sustainability impact for your operations
Understand how OTAR® supports your business in meeting carbon emission goals and regulatory requirements.
Turn Your Ammonia Liability into a Resource
Don’t let nitrogen limit your renewable energy potential. Join the leaders in waste-to-energy who are using OTAR® to drive the circular economy.
Product briefing : On-site Thermal Ammonia Recovery (OTAR)
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