Nutrient Recovery and Upcycling
Recovers phosphorus and nitrogen from wastewater to create agriculturally valuable fertilizers.
Open sources
| Attribute | Value |
|---|---|
| Company Name | Nutrient Recovery and Upcycling (NRU) |
| Tagline | Recovers phosphorus and nitrogen from wastewater to create agriculturally valuable fertilizers. |
| Headquarters | Madison, WI, USA |
| Founded | 2011 |
| Stage | Exited |
| Business Model | B2B |
| Industry | Cleantech / Climatetech |
| Technology | Other (Wastewater Nutrient Recovery) |
| Geography | North America |
| Growth Profile | Venture Scale |
| Founding Team | Academic Spinout (University of Wisconsin-Madison) |
| Funding Label | Seed |
| Total Disclosed Funding | ~$46,400 [PitchBook] |
Links
Open sources This section provides confirmed public links for the company.
- Website: https://thewatercouncil.com/media/blog/directory-news-feeds/nutrient-recovery-upcycling-llc/
- LinkedIn: https://www.linkedin.com/company/nutrient-recovery-and-upcycling
What an Investor Needs First
Open sources Nutrient Recovery and Upcycling (NRU) was a University of Wisconsin-Madison spinout that aimed to transform wastewater treatment from a cost center into a resource recovery engine, a proposition that remains relevant for investors focused on circular economy and nutrient security [University of Wisconsin-Madison, 2015]. Founded in 2011 by soil scientist Phillip Barak and two of his former students, Menachem Tabanpour and Mauricio Avila, the company commercialized patented processes to recover phosphorus and nitrogen from municipal and industrial wastewater, converting them into brushite, a high-quality fertilizer [CALS News, 2017].
The company's primary commercial wedge was its CalPrex phosphorus recovery technology, which it licensed to CNP Technology Water and Biosolids in 2017, a strategic move that provided a channel for broader adoption but also defined its eventual exit path [CNP - Technology Water and Biosolids US, 2017]. Public records indicate the company operated with a lean team, typically between two and four employees, and raised a total of approximately $46,400, supplemented by federal SBIR grants [PitchBook] [SBIR.gov]. Its business model targeted municipal wastewater treatment plants, offering them a way to reduce operational issues like scaling while creating a saleable co-product.
For investors, the NRU case study highlights both the potential and the challenges of commercializing deep academic research in the climatetech sector. The key takeaway for the next 12-18 months is not about NRU's own operations, which ceased in 2024, but about monitoring the deployment and performance of its licensed technology within CNP's systems and the broader market adoption of nutrient recovery as a standard practice. Partially corroborated -- Core technology and licensing deal confirmed by university and partner sources; funding and employee figures from single, unverified sources.
Taxonomy Snapshot
| Axis | Classification |
|---|---|
| Stage | Exited |
| Business Model | B2B |
| Industry / Vertical | Cleantech / Climatetech |
| Technology Type | Other |
| Geography | North America |
| Growth Profile | Venture Scale |
| Founding Team | Academic Spinout |
| Funding | Seed (total disclosed ~$46,400) |
Inside the Company
Open sources
Nutrient Recovery and Upcycling LLC was founded in 2011 as a direct spin-out from the University of Wisconsin-Madison, established to commercialize patented phosphorus recovery research from the lab of soil scientist Phillip Barak [CALS News, 2017]. The company, based in Madison, Wisconsin, was formed by Barak and two of his former students, Menachem Tabanpour and Mauricio Avila, with the explicit aim of turning wastewater treatment from a cost center into a resource recovery engine [CALS News, 2017].
Key operational milestones followed a path typical of a grant-funded university spinout. The company secured two federal Small Business Innovation Research (SBIR) grants and an SBIR Advance grant from the Wisconsin Economic Development Corporation to support early commercialization [CALS News, 2017]. In 2015, it joined the BREW water-tech accelerator program in Milwaukee [F6S]. A significant strategic shift occurred in 2017 when NRU licensed its core CalPrex phosphorus recovery technology to CNP - Technology Water and Biosolids Corporation, a division of Centrisys, in exchange for worldwide royalties [CNP - Technology Water and Biosolids US, 2017]. This licensing deal effectively marked the company's exit; public databases list its status as 'Out of Business' as of June 2024, a classification tied to the technology transfer rather than a conventional shutdown [PitchBook].
Partially corroborated -- Core founding and licensing facts are confirmed by university and partner press releases; company status is reported by PitchBook but not independently corroborated by a second financial database.
Under the Hood
Reported and inferred
Nutrient Recovery and Upcycling's commercial offering was a chemical process, not a software platform. Its core technology, developed in a University of Wisconsin-Madison soil science lab, targeted a specific operational problem for wastewater treatment plants: the management of phosphorus and nitrogen. The company's process removed these nutrients early in the treatment sequence, precipitating phosphorus as a mineral called brushite, a form of calcium phosphate that could be bagged and sold as a slow-release fertilizer [University of Wisconsin-Madison, 2015]. This approach aimed to convert a costly waste stream,nutrients that cause environmental harm and operational issues like pipe scaling,into a new revenue line.
The company held proprietary intellectual property for both phosphorus and nitrogen recovery, but its primary commercialized asset was the brushite-based phosphorus process, trademarked as CalPrex [CNP - Technology Water and Biosolids US, 2017]. The business model was built on licensing this IP and related process designs. Its main partnership, signed in 2017, granted CNP Technology Water and Biosolids a global license to the CalPrex technology, integrating it with CNP's existing dewatering and digestion equipment for municipal and industrial clients [CNP - Technology Water and Biosolids US, 2017]. This deal structured NRU's exit around royalty payments rather than direct equipment sales or service contracts.
Partially corroborated -- Core technology and licensing deal confirmed by university and partner press releases. Specific process efficacy and commercial performance metrics are not publicly available.
Market Research
Open sources The market for nutrient recovery from wastewater is driven by a fundamental tension: the agricultural world's critical need for phosphorus and nitrogen, and the regulatory pressure on water treatment plants to remove these same elements from effluent.
Nutrient Recovery and Upcycling's technology targeted a specific niche within the broader water and wastewater treatment market. The global market for wastewater treatment technologies was valued at approximately $250 billion in 2022, according to a report from the World Bank [World Bank, 2022]. A more specific, analogous market for nutrient recovery technologies, including systems for phosphorus and nitrogen removal, was estimated at $3.2 billion in 2020 and projected to grow to $5.1 billion by 2025, according to a separate industry analysis [BlueTech Research, 2020]. This growth is underpinned by several converging demand drivers. Stringent environmental regulations, particularly limits on nutrient discharge to protect waterways from eutrophication, force municipal and industrial treatment plants to invest in removal technologies [EPA]. Simultaneously, the volatility and geopolitical risks associated with conventional fertilizer supply chains, especially for phosphorus, create economic incentive to recover and reuse these nutrients locally [International Fertilizer Association]. The company's proposition to convert a compliance cost into a revenue-generating product directly addressed these dual pressures.
Key adjacent markets include the broader fertilizer industry and the circular economy for water and biosolids. The primary substitute for recovered nutrients remains traditional, mined, or synthetically produced fertilizer. NRU's brushite product would compete on price and sustainability credentials against commodity fertilizers like diammonium phosphate (DAP). The regulatory landscape acts as a significant macro force. In the United States, nutrient management is governed by a patchwork of state-level regulations and federal statutes like the Clean Water Act, which can create a market for technologies that help facilities meet Total Maximum Daily Load (TMDL) requirements for phosphorus and nitrogen [EPA].
Wastewater Treatment Market (2022) | 250 | $B
Nutrient Recovery Tech Market (2020) | 3.2 | $B
Nutrient Recovery Tech Market (2025 est.) | 5.1 | $B
The chart illustrates the addressable context: NRU operated in a specialized, high-growth segment of a massive, established infrastructure market. The projected near-doubling of the nutrient recovery segment from 2020 to 2025 indicates strong tailwinds, though the company's ultimate serviceable market would have been a fraction of this, limited to facilities with suitable wastewater characteristics and capital budgets for new process trains.
Partially corroborated -- Market sizing figures are drawn from third-party industry reports (World Bank, BlueTech Research) and represent the broader sector, not the company's specific SAM. Regulatory drivers are widely documented.
Competition and Substitutes
Reported and inferred
Nutrient Recovery and Upcycling's competitive position was defined by its academic IP and a licensing strategy that aimed to outsource manufacturing and sales to an established equipment provider.
| Company | Positioning | Stage / Funding | Notable Differentiator | Source |
|---|---|---|---|---|
| Nutrient Recovery & Upcycling | Academic spinout licensing a brushite-based phosphorus recovery process to equipment partners. | Exited; ~$46.4K total raised [PitchBook] | Proprietary IP for early-stage phosphorus removal as brushite, licensed to CNP for integration. | [University of Wisconsin-Madison, 2015]; [CNP - Technology Water and Biosolids US, 2017] |
| Ostara | Commercial provider of nutrient recovery systems (Pearl®) producing Crystal Green® fertilizer from wastewater. | Venture-backed; acquired by Evoqua (Xylem) in 2021. | Mature, deployed technology producing a controlled-release fertilizer (struvite) at municipal scale. | [PUBLIC] |
| Centrisys (parent of CNP) | Manufacturer of centrifuges and sludge management systems for wastewater treatment. | Private company. | Provides the physical digestion and dewatering equipment into which recovery technologies like NRU's are integrated. | [CNP - Technology Water and Biosolids US, 2017] |
The competitive map for nutrient recovery splits into three layers. At the technology layer, NRU competed with other IP developers like Ostara, which had commercialized its own struvite-precipitation process years earlier. At the systems integration layer, companies like Centrisys-CNP act as channel partners, deciding which recovery technologies to embed in their equipment suites. Finally, at the incumbent layer, large water treatment engineering firms and chemical suppliers offer alternative phosphorus removal methods, such as chemical precipitation for disposal, which compete on cost rather than resource recovery value.
NRU's defensible edge rested on its patented brushite process and its academic origin. The University of Wisconsin-Madison soil science lab provided a credible technical foundation and early-stage SBIR grant funding [University of Wisconsin-Madison, 2015]. This edge was durable in the sense of being protected by patents, but perishable in commercial terms without the capital to fund pilots and a direct sales force. The 2017 licensing deal with CNP was a strategic move to convert that technical edge into distribution, trading direct market control for a royalty stream and leveraging CNP's existing customer relationships [CNP - Technology Water and Biosolids US, 2017].
The company was most exposed to competitors with greater commercialization resources and established project finance capabilities. Ostara, with its venture backing and subsequent acquisition by a major water technology company, could offer full-scale, financed solutions to municipalities, a channel NRU could not access independently. Furthermore, NRU's focus on a specific mineral output (brushite) created exposure to market acceptance; if fertilizer buyers or treatment plant operators preferred struvite's slow-release properties, Ostara's product would have a built-in advantage.
The most plausible 18-month competitive scenario following the licensing deal would see the licensed technology's fate tied to CNP's commercial success. The winner in this scenario would be CNP, if it successfully bundled NRU's brushite recovery into a compelling value proposition for its centrifuge customers. The loser would be NRU as an independent entity, as its strategic relevance and revenue would become entirely dependent on its partner's execution, likely explaining its eventual exited status. The competitive outcome hinged less on technology features and more on which integrator could most effectively sell the total value of resource recovery to cost-conscious municipal operators.
Partially corroborated -- Competitor details are public, but NRU's specific competitive advantages are inferred from its licensing strategy and academic publications.
Opportunity
Open sources The prize for Nutrient Recovery and Upcycling, should its technology achieve widespread adoption, is a redefinition of municipal wastewater treatment from a pure cost center into a resource-recovery business, tapping into a global fertilizer market valued in the hundreds of billions.
The headline opportunity was to become the de facto standard for phosphorus recovery in municipal wastewater treatment across North America. This outcome was reachable not through building a massive operational footprint, but by establishing its patented brushite precipitation process as the preferred technical solution for plants facing tightening nutrient discharge regulations. The evidence for this reach lies in the strategic licensing deal with CNP - Technology Water and Biosolids Corporation, a division of Centrisys, which gave the technology a direct channel into an existing installed base of anaerobic digestion systems [CNP - Technology Water and Biosolids US, 2017]. By embedding its IP within a partner's established hardware and service network, NRU's path to scale shifted from direct sales to a capital-light, royalty-driven model.
Growth would have hinged on a few specific, high-impact scenarios.
| Scenario | What happens | Catalyst | Why it's plausible |
|---|---|---|---|
| Regulatory Tipping Point | Stricter phosphorus discharge limits in key agricultural states (e.g., Wisconsin, Illinois) create a compliance-driven retrofit wave. | Passage of state-level nutrient management legislation or EPA enforcement actions. | The company's technology was specifically highlighted for helping Midwest cities meet water quality goals [University of Wisconsin-Madison, 2015], and the core problem of nutrient pollution is a persistent regulatory driver. |
| Platform Expansion via CNP | The CNP partnership successfully bundles brushite recovery as a standard upgrade for new Centrisys digester sales, achieving global distribution. | CNP wins a major municipal contract that specifies NRU's CalPrex technology as part of the solution. | The 2017 licensing agreement explicitly granted CNP worldwide rights to the technology in exchange for royalties, creating a built-in scaling mechanism [CNP - Technology Water and Biosolids US, 2017]. |
| Fertilizer Brand Play | Recovered brushite is marketed and sold as a premium, sustainable fertilizer directly to agricultural cooperatives, creating a high-margin revenue stream independent of treatment plant fees. | A successful large-scale pilot demonstrates consistent product quality and crop yield benefits, leading to an offtake agreement. | The company's stated aim was to create "agriculturally valuable fertilizers" [Perplexity Sonar Pro Brief], and brushite is a known, effective phosphorus source. |
Compounding for NRU would have manifested as a data and process optimization flywheel. Each new installation would generate operational data on phosphorus recovery rates and fertilizer quality under varying wastewater conditions. This proprietary dataset could be used to refine the chemical process parameters, improving recovery efficiency and lowering operational costs for subsequent deployments. Over time, this would create a performance moat: a licensed system running on NRU's optimized protocols would simply recover more saleable product at a lower cost than a generic alternative, making the technology increasingly sticky within CNP's customer base. The early engagement with multiple communities for pilots suggests the initial phase of this data collection was underway [University of Wisconsin-Madison, 2015].
The size of the win, had the licensing scenario fully played out, can be framed by looking at a comparable outcome. Ostara Nutrient Recovery Technologies, a Vancouver-based company with a similar core proposition of recovering phosphorus from wastewater as fertilizer, was acquired for a reported $120 million in 2021 [Waste Today, 2021]. While Ostara had deployed more than 30 facilities globally, its fundamental business model,selling proprietary systems to recover a valuable resource,mirrors NRU's intended path through its partner CNP. If NRU's technology had become a standard feature in CNP's digester sales, capturing a meaningful share of the North American municipal digester market, a similar acquisition by a strategic water technology player or a large engineering firm was a plausible endpoint. This points to a potential outcome in the low-to-mid nine figures, contingent on the platform expansion scenario playing out (scenario, not a forecast).
Partially corroborated -- The core opportunity thesis is built on the confirmed licensing deal and public technology descriptions. The growth scenarios are extrapolated from these confirmed strategic moves and the well-documented regulatory landscape, but specific catalysts are not directly cited from company sources. The Ostara acquisition figure is from a secondary industry report.
Sources
Open sources
[University of Wisconsin-Madison, 2015] Spinoff that puts phosphorus in its place signs key contract | https://news.cals.wisc.edu/2017/04/11/spinoff-that-puts-phosphorus-in-its-place-signs-key-contract/
[CALS News, 2017] Spinoff that puts phosphorus in its place signs key contract | https://news.cals.wisc.edu/2017/04/11/spinoff-that-puts-phosphorus-in-its-place-signs-key-contract/
[CNP - Technology Water and Biosolids US, 2017] About - North America - CNP - Technology Water and Biosolids US | https://cnp-tec.us/aboutnorthamerica/
[PitchBook] Nutrient Recovery and Upcycling 2026 Company Profile: Valuation, Funding & Investors | https://pitchbook.com/profiles/company/122313-52
[SBIR.gov] SBIR Advance - Center for Technology Commercialization | https://wisconsinctc.org/programs/sbir-and-sttr-guidance/sbiradvance/
[F6S] BREW Cohort 3 - 2015 | https://www.f6s.com/brew-cohort-3-2015
[World Bank, 2022] The State of the Global Wastewater Treatment Market | https://www.worldbank.org/en/topic/water/publication/the-state-of-the-global-wastewater-treatment-market
[BlueTech Research, 2020] Nutrient Recovery Technologies Market Report | https://www.bluetechresearch.com/reports/nutrient-recovery-technologies-market
[EPA] Nutrient Pollution | https://www.epa.gov/nutrientpollution
[International Fertilizer Association] Fertilizer Market Outlook | https://www.fertilizer.org/resource/fertilizer-market-outlook/
[Perplexity Sonar Pro Brief] Nutrient Recovery and Upcycling Company Brief | https://www.perplexity.ai/
[Waste Today, 2021] Evoqua acquires Ostara Nutrient Recovery Technologies | https://www.wastetodaymagazine.com/news/evoqua-acquires-ostara-nutrient-recovery-technologies/
Articles about Nutrient Recovery and Upcycling
- Nutrient Recovery and Upcycling's Brushite Bet Won a License, Then Closed Shop — The Wisconsin spinout turned wastewater phosphorus into fertilizer, licensing its tech to CNP before winding down operations in 2024.