SoSEAL: Soil Sealing by Enhanced Aluminium and dissolved organic matter Leaching 

Themes: Chemistry, bio- & process technology, Water & Maritime


A TRL is a measure to indicate the matureness of a developing technology. When an innovative idea is discovered it is often not directly suitable for application. Usually such novel idea is subjected to further experimentation, testing and prototyping before it can be implemented. The image below shows how to read TRL’s to categorise the innovative ideas.

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In-situ permeability reduction by SoSEAL allows control of unwanted seepage on large scales, while being a cost-effective alternative to existing techniques with an additional self-healing capacity and low impact to the surrounding environment.


SoSEAL is inspired by the podzolisation process, in which metal-organic matter precipitates form an almost impermeable soil layer. The parallel development of applied in-situ technology and fundamental insights into processes within the project is unique.


The first pilot has been carried out and shows promising results. More field tests are performed within the next years in close cooperation with our commercial partners to develop the necessary knowhow for application.

Dr. Susanne Laumann


Prof. dr. ir. Timo Heimovaara

Jiani Zhou MSc

Dr. Boris Jansen

Olaf Brock MSc

Prof. dr. Miro Zeman

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