Digesters
Recover nutrient value from liquid digestate and improve project economics.
Explore digesters →Recover Nutrients. Create Value. Support Cleaner Water.
GSR helps farms, digesters, processors, utilities, and product partners turn nutrient-rich liquid waste streams into recovered fertilizer, recycled water, and other resource outputs.
99%+
N and P recovery potential under defined conditions
On-Farm
Farm and waste-to-value project experience
Multiple
Fertilizer products developed and introduced
Find Your Fit
Market Applications
Select the area that best matches your site, waste stream, or product goal.
Livestock Farms
Reduce manure-management burden and convert farm nutrient streams into value.
Explore farms →
Food & Beverage
Turn organic processing residuals into recovery, reuse, and product pathways.
Explore processors →
Utilities & Infrastructure
Add nutrient recovery around existing or planned digester effluent streams.
Explore infrastructure →
Fertilizer & Soil Health
Connect recovered nutrients with organic fertilizer and plant nutrition markets.
Explore agriscience →
Additional Product Pathways
Explore fuel, food/feed, nutraceutical, and other waste-to-value opportunities.
Explore pathways →Stakeholder-Led Recognition
Global Nutrient-Recycling Stakeholders Selected GSR Technology
Twenty-one leading dairy, biogas, and nutrient-management stakeholders selected GSR Solutions technology through the USDA-EPA-led Global Nutrient Recycling Challenge, which sought practical nutrient-recovery solutions for livestock manure. The Challenge highlighted a clear market need for technologies that capture nitrogen, phosphorus, and organic value from manure, digestate, food-processing residuals, and other nutrient-rich streams.
21
Livestock-sector stakeholders as judges
USDA-EPA
Nutrient Recycling Challenge
Waste-to-Value
Technology pathway recognized
Anaerobic Digesters
Improve Digestate Management and Recover More Value
Anaerobic digesters can produce electricity or renewable natural gas while still leaving operators with nutrient-rich liquid digestate that requires downstream management. GSR helps connect digestate treatment with nutrient recovery, fertilizer production, recycled water, and stronger project economics.
Best fit for: farm digesters, food-waste digesters, RNG projects,
CHP digesters, and projects seeking stronger nutrient-management outcomes.
- Better nutrient management around digester operations
- Improved water-quality relevance
- Support for fertilizer and soil-input production
- Additional value beyond energy generation alone
Livestock Farms
Recover Nutrient Value from Manure and Farm Liquids
Farms and livestock operations face increasing pressure to manage manure and nutrient-rich residuals more effectively while protecting nearby water resources. GSR supports recovery pathways for farms with digesters and farms managing raw manure without digesters.
Best fit for: dairy farms, livestock operations, farms with digesters,
and farms evaluating manure-to-fertilizer or water-quality pathways.
- Reduced nutrient runoff risk
- Improved on-farm nutrient stewardship
- Support for fertilizer and soil-input production
- Better alignment with water-quality goals
Food & Beverage
Turn Organic Processing Residuals Into Useful Outputs
Food and beverage processors often manage liquid residuals with organic and nutrient value. GSR evaluates suitable streams for recovery pathways that may support fertilizer, water reuse, or other site-specific outputs.
Best fit for: breweries, fermentation facilities, food processors,
beverage producers, and sites with nutrient-rich organic residuals.
- Better use of organic residual streams
- Potential product and value recovery
- Support for environmental goals
- Improved waste-to-value positioning
Utilities & Infrastructure
Add Nutrient Recovery Around Utilities and Infrastructure Partner Digesters
Utilities and infrastructure partners involved in digester-related projects may need stronger nutrient-management outcomes. GSR supports pathways that connect nutrient recovery, water stewardship, and downstream product value.
Best fit for: utilities, municipal partners, infrastructure developers,
community-scale projects, and partners evaluating water-quality and resource-recovery value.
- Added value around existing infrastructure
- Stronger nitrogen and phosphorus management relevance
- Support for community water-quality outcomes
- More complete resource-recovery positioning
Fertilizer & Soil Health
Connect Recovered Nutrients With Crop and Soil Performance
Through its Agriscience business, GSR develops plant nutrition products commercialized in partnership with the NutriHarvest platform. These products are designed to support nutrient efficiency, crop performance, and more circular agricultural systems.
Best fit for: growers, horticultural users, organic and regenerative
markets, fertilizer partners, and product channels seeking recovered nutrient value.
- Improved nutrient-use efficiency
- Support for crop productivity goals
- Better nutrient-retention potential
- Alignment with circular agricultural systems
Additional Product Pathways
Explore Additional Fuel, Food/Feed, and Waste-to-Value Opportunities
In some project settings, nutrient-rich waste streams may support additional downstream value beyond fertilizer production, including liquid fuels, nutraceuticals, animal feed, and other biological resource pathways.
Best fit for: innovation partners, project developers, investors,
biomass platforms, and sites evaluating broader waste-to-value potential.
- Broader waste-to-value potential
- Additional product and commercialization opportunities
- Improved value capture from biological resources
- Expanded long-term innovation potential
Field and Product Validation
Recovered Nutrients Connected to Real Product Pathways
GSR’s platform is designed not only to treat waste streams, but also to create usable outputs. Independent field evaluations have assessed nutrient-recovered fertilizers produced using GSR technology across multiple crops and performance indicators.
+14.2%
Corn yield improvement vs untreated control
+11.4 bu/ac
Corn gain vs leading organic fertilizer under equal-N conditions
~45%
Less nitrate release in corn comparisons
56–68%
Lower late-season residual soil nitrate in cabbage results
How GSR Can Engage
From Screening to Implementation
GSR can support projects at different stages, from early feasibility review to pilot validation and commercial deployment.
Feasibility Screening
Initial review of waste stream, site conditions, nutrient profile, operating constraints, and potential recovery pathways.
Pilot Validation
Site-specific testing to evaluate recovery performance, product outputs, water quality, operating requirements, and practical integration needs.
Commercial Implementation
Deployment pathways for nutrient recovery, fertilizer production, water polishing, project support, and long-term operating alignment.
Start a Project Discussion
Have a nutrient-rich waste stream or product pathway to evaluate?
Tell GSR about your site, waste stream, project goal, or partnership interest. The team can help assess whether nutrient recovery, fertilizer production, recycled water, or additional resource pathways may fit.