REGROUND · Project

Nanoparticle Injection System That Locks Toxic Metals in Contaminated Groundwater

environmentPilotedTRL 7

Imagine your drinking water well sits downstream from an old factory, and the groundwater is laced with arsenic or lead. Traditional cleanup means digging up tons of soil or pumping water for years — expensive and disruptive. REGROUND developed tiny iron oxide particles you inject into the ground like a medical shot. These particles stick to the sediment and act like a sponge, trapping toxic metals in place so they never reach your tap.

By the numbers

toxic metals targeted (arsenic, barium, cadmium, chromium, copper, lead, mercury, zinc)

industrial-scale field applications at different site types

years of prior technology development before the project

TRL 7

technology readiness level achieved

consortium partners across 5 countries

The business problem

What needed solving

Toxic metal contamination in groundwater — from arsenic to lead to mercury — threatens drinking water supplies worldwide. Conventional cleanup methods like pump-and-treat or full excavation are so expensive that many contaminated sites are simply left untreated, creating ongoing health and environmental risks. Companies and municipalities need a cheaper, less disruptive way to stop toxic metals from spreading through underground water.

The solution

What was built

REGROUND developed injectable iron oxide nanoparticles that form an underground adsorptive barrier trapping 8 toxic metals in place. The team completed 2 industrial-scale field applications at different site types plus an overseas deployment, producing 15 deliverables including field monitoring and evaluation reports that demonstrate TRL 7 performance.

Audience

Who needs this

Environmental remediation companies looking for cost-effective alternatives to pump-and-treatMunicipal water utilities with contaminated drinking water wells near industrial sitesMining companies managing legacy contamination and regulatory cleanup obligationsIndustrial site owners facing brownfield remediation before redevelopmentEnvironmental consultancies advising clients on groundwater treatment options

Business applications

Who can put this to work

Environmental Remediation

any

Target: Groundwater remediation and environmental engineering firms

If you are an environmental remediation company dealing with contaminated groundwater sites that are too expensive to clean with conventional pump-and-treat methods — this project developed injectable iron oxide nanoparticles tested at TRL 7 in industrial-scale field trials that immobilize 8 different toxic metals (arsenic, cadmium, chromium, copper, lead, mercury, barium, zinc) directly in the ground. After 6 years of lab development and 2 industrial-scale field applications, the technology is near market-ready.

Water Utilities

enterprise

Target: Municipal and private drinking water suppliers

If you are a water utility managing drinking water wells near industrial or mining areas — this project built an in-situ adsorptive barrier that stops toxic metals from migrating into your wells. The system was tested at 2 different types of contaminated sites under real field conditions, targeting the most common groundwater contaminants. It could reduce your long-term treatment costs compared to continuous above-ground filtration.

Mining & Heavy Industry

enterprise

Target: Mining companies and industrial operators with legacy contamination liability

If you are a mining or industrial company facing regulatory pressure to clean up legacy contamination at old production sites — this project offers a low-cost alternative to full excavation. The iron oxide nanoparticles are injected as a colloidal suspension into sediments, forming stable deposits that trap metals in place. The technology was specifically designed for sites left untreated due to technical or economic barriers.

Frequently asked

Quick answers

What does this technology cost compared to traditional groundwater cleanup?

The project objective explicitly states the technology was designed to be 'low cost' and targets sites 'left untreated due to technical or economic reasons.' Specific cost figures per cubic meter are not available in the project data, but the value proposition is enabling cleanup at sites where conventional methods were too expensive to justify.

Has this been tested at industrial scale, not just in a lab?

Yes. The core objective of REGROUND was performing 2 industrial-scale applications at 2 different types of contaminated sites. Additionally, an overseas field application was conducted with monitoring and evaluation. The technology had already been validated in lab experiments and a scientific field application before the project started.

Who owns the technology and can I license it?

The project was coordinated by Universität Duisburg-Essen (Germany) with a consortium of 8 partners across 5 countries. The consortium includes 2 industry partners. IP arrangements would need to be discussed with the coordinator. The project objective mentions 'commercialization efforts' as an integral part of REGROUND.

Which contaminants does this actually work on?

Based on the project objective, the technology specifically addresses 8 toxic metals: arsenic, barium, cadmium, chromium, copper, lead, mercury, and zinc. These are described as 'known major groundwater contaminants.' The iron oxide nanoparticles create an adsorptive barrier that immobilizes these metals in situ.

How mature is this technology — is it ready to deploy?

The demo deliverable references TRL 7 (system prototype demonstration in operational environment). The project built on 6 years of prior development and moved from lab validation to 2 industrial-scale field tests. The objective describes the technology as 'near-market' with commercialization as an integral project goal.

Does this meet environmental regulations?

The technology is designed as a 'green water eco-innovation.' However, regulatory approval for injecting nanoparticles into groundwater varies by jurisdiction. Based on available project data, the overseas and European field tests would have required local regulatory clearance, suggesting a compliance pathway exists.

Can this work at my specific site?

The technology was tested at 2 different types of contaminated sites — groundwater aquifers, drinking water wells, and river bank filtration sites are all mentioned as target applications. Site-specific feasibility would depend on local geology, contaminant levels, and hydrogeological conditions.

Consortium

Who built it

The REGROUND consortium brings together 8 partners from 5 countries (Belgium, Germany, Spain, Italy, Portugal), coordinated by Universität Duisburg-Essen in Germany. The mix includes 4 universities and 2 research organizations providing the science, plus 2 industry partners (including 1 SME) for real-world deployment and commercialization. The 25% industry ratio is typical for Innovation Actions where academic developers bring technology to market through industry partners. The geographic spread across Southern and Western Europe covers regions with significant groundwater contamination challenges from mining and industrial legacy sites.

UNIVERSITAET DUISBURG-ESSENCoordinator · DE
KNOWLEDGE INNOVATION MARKET SLparticipant · ES
GEOPLANO CONSULTORES SAparticipant · PT
FUNDACION TECNALIA RESEARCH & INNOVATIONparticipant · ES
FRIEDRICH-SCHILLER-UNIVERSITÄT JENAparticipant · DE
POLITECNICO DI TORINOparticipant · IT
ACONDICIONAMIENTO TARRASENSE ASSOCIACIONparticipant · ES
KATHOLIEKE UNIVERSITEIT LEUVENparticipant · BE

How to reach the team

Universität Duisburg-Essen, Germany — contact SciTransfer for an introduction to the research team

Order a report on this consortium See UNIVERSITAET DUISBURG-ESSEN profile →

Next steps

Talk to the team behind this work.

Want to explore whether REGROUND nanoparticle technology could work at your contaminated site? SciTransfer can arrange a technical feasibility discussion with the research team.

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