Sustainable Phosphate Recovery

PRM® (Phosphate Recovery Material) is at the core of the nuRe® approach. Made from modified, carbon‑negative biomass, PRM captures phosphate from water efficiently and safely, turning a pollutant into a useful agricultural resource.

What is PRM?

PRM is Rookwood’s patented, nature‑based material for removing phosphate from water. It is engineered to bind phosphate effectively across a wide range of water types, from wastewater to surface water and agricultural and industrial systems.

Once saturated, PRM holds captured phosphate securely and can be reused as LiftedP — a slow‑release nutrient for crops (subject to regulatory approval). A practical, circular alternative to mined phosphate fertilisers.

Why PRM Works

Highly Effective Phosphate Removal
Designed to target and bind phosphate, PRM prevents eutrophication and supports healthier aquatic ecosystems.
Sustainable and Naturally Derived
Produced from responsibly sourced, low‑impact materials with no harmful additives.
Carbon‑Negative by Design
Our process actively sequesters CO₂, making PRM® carbon‑negative and contributing to climate goals.
Circular and Resource‑Efficient
Captured phosphate becomes a reusable nutrient — reducing waste and lowering reliance on mined resources.
Safe and Robust in Water
PRM retains structural integrity, does not leach contaminants, and performs reliably across varied water conditions.

Unlock Exceptional Phosphate Removal with PRM® Our advanced material delivers rapid, effective, and sustainable phosphate capture—transforming water quality and supporting a cleaner, healthier environment.

Who PRM® Helps

Water Companies

A high‑performance tertiary treatment to remove residual phosphate and support compliance, deployed through modular nuRe® hardware.

Developers and Construction

Meet nutrient neutrality requirements with a nature‑based, temporary or permanent filtration solution.

Regulators and Environmental Bodies

A practical, circular approach that improves water quality, reduces eutrophication risk, and aligns with long‑term environmental objectives.

Agriculture

Spent PRM® can be reused as LiftedP®, returning captured nutrients to land and supporting sustainable crop production (subject to approval).

Environmental Groups

A nature‑based technology that delivers measurable improvements in water quality and ecosystem resilience.

Horticulture and Gardening

Eco‑friendly nutrient recovery supporting greener growth and cleaner water.

How is PRM Deployed?

Rookwood has developed nuRe® hardware — a set of simple, adaptable systems designed for efficient deployment of PRM® across multiple environments.

Portable Cartridges
Pre‑filled modules for quick installation and easy replacement.
Fixed Containers
Robust units for treatment plants and engineered water networks.
Flexible Connection Packs
Integrates PRM® cartridges with existing flow systems and pumps.
Open Water Installations
Cartridges on riverbanks, floating structures or nature‑based features such as wetlands.
Controlled Environments
Exchangeable cartridges in fixed housings for straightforward tertiary treatment.

Sustainability and Scalability

Longevity and Smart Replacement

Adsorption levels reliably calculated ahead of deployment
Remote monitoring tracks performance in real time

Unlocking Full Circularity

PRM uses residual materials from other industries
Waste heat and by‑products are reused in production
Carbon‑negative manufacturing generates up to 2 carbon credits per tonne
Spent PRM becomes Lifted P, closing the nutrient loop

Regulatory Alignment

We work with environmental authorities to ensure safe, compliant deployment — including ecological considerations for natural water bodies.

PRM® — Turning a Problem Into a Resource

PRM® transforms phosphate pollution into potential.
It strengthens water quality, supports circularity, and reduces dependence on mined fertilisers — all through a practical, safe and carbon‑negative material.

PRM is the 1st material enabling our nuRe approach.
LiftedP is the nutrient that completes the loop.
Together, they deliver a more resilient future for water, land and climate.