ReSoil® Technology
A novel and innovative remediation solution that enables the removal of heavy metals from contaminated soils in a closed cycle through an emission-free process without wastewater, while preserving the soil as a natural substrate.
How It Works
The ReSoil® process combines innovative soil washing techniques with advanced recycling solutions to effectively remove heavy metals while preserving soil quality.
Key Process Features
In ReSoil® the chelating agent EDTA (ethylenediamine tetraacetate) is used to extract toxic metals: Pb, Cd, Cu, Zn…. and metalloids: As, Sb from the soil.
ReSoil® is a batch process with a soil remediation cycle of < 1.5 hours.
EDTA and all process water are recycled in a pH gradient of 12.5 - 2 given by CaO / Fe2+ and H2SO4.
Metals and metalloids precipitate with Fe and in the form of hydroxides.
Excess and residual reagents are removed from the process solutions, e.g. as Ca salts.
Water is only required to balance the moisture in the remediated soil and for lime hydration.
The washed soil is used as a filter to purify the process solutions.
Emissions from the washed soil are contained by rinsing the soil and adding zero-valent iron (Fe0) to the soil slurry.
Closed cycle: No waste water is produced, only solid waste.
Sustainable Soil Restoration
ReSoil® enables the restoration of soils across various land uses, including agricultural lands, paddy fields, brownfields, military sites, and urban areas.
Key Benefits
- ✓Preserves soil's chemical, physical, and biological properties
- ✓Reduces heavy metal concentrations by up to 99%
- ✓Ensures unaffected plant growth
Cost Analysis
ReSoil® follows the principle of economies of scale, offering cost-effective solutions through efficient material recycling and innovative processes.
Cost Analysis by Plant Capacity
Remediation Options Comparison
See how ReSoil® compares to conventional remediation methods for soils contaminated with heavy metals.
| Available Technologies | In use by | Effective for heavy metal removal | Applicable for highly contaminated soil | Applicable for all soil types | Applicable for multi-contaminated soil | Preserves soil (Green & sustainable) | NO problematic emissions | Cost for end customer (€/m³) |
|---|---|---|---|---|---|---|---|---|
| Soil dig & dump | Construction companies | YES | YES | YES | YES | NO | Soil deposition | 100 – 700 |
| Engineered solutions (soil capping) | Construction companies | YES | YES | YES | YES | NO | Leaching | 30 – 200 |
| Solidification & Stabilization | Construction companies | NO | YES | NO | YES | NO | YES but difficult to achieve | 40 – 100 |
| Classical soil washing (removal of fines) | Remediation companies | YES (up to 80%) | YES, optionally | Only for light and sandy soils | YES | NO | Deposition of contaminated fines | 50 – 150 |
| Immobilization by various additives | Remediation companies | NO (reduces Bio-metal accessibility) | NO | Difficult for rich, heavy soils | Theoretically | YES | YES | 20 – 60 + repeatable periodical cost |
| Phytoremediation | Remediation companies | Not efficient for Pb, As, Cu. | NO | YES | NO | YES | Contaminated biomass | ? |
| ReSoil® | Remediation companies | YES (up to 95 %) | YES | YES | YES | YES | YES | 70 – 150 |
Why Choose ReSoil®?
ReSoil® offers a more sustainable and efficient alternative to conventional remediation methods, being the only solution that efficiently removes toxic metals while preserving soil functionality.
Environmental Impact
Environmentally friendly and sustainable, with no harmful emissions
Cost Efficiency
Uses low-cost materials to recycle expensive EDTA
For more information, contact us!
Contact us to learn more about how ReSoil® Technology can help with your soil remediation needs.
Contact Us