Recovery technologies

Phosphorus recovery


Nitrogen recovery


Stabilization through drying, torrefaction or carbonization


Plant engineering and system integration

Plants for the processing of manure


Case studies

Reference projects

PhosKa-Demo – Further development of a sustainable process for phosphorus and potassium recovery from liquid waste through to market maturity

Project duration: December 2015 – November 2017

In the project "PhosKa-Demo" funded by the German Federal Ministry for Education and Research (BMBF), we have scaled up a sustainable process for the treatment of liquid manure and tested it in continuous operation. A fertilizer containing phosphorus and potassium that demonstrably enhances the properties of plants is recovered from manure by precipitation. The process concept had previously been developed as part of the EU-funded BioEcoSIM project.

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Pig manure as a valuable resource – BioEcoSIM

Project duration: October 2012 – September 2016

The project aims to convert the constituents of the slurry into various fertilizers: biochar as a phosphorous-rich organic soil improver as well as mineral fertilizers such as ammonium sulphate, calcium phosphate and magnesium ammonium phosphate (struvite).

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Recovery of nutrients and organic matter from agricultural residues

At the moment, the decline of soil fertility is only masked by the overuse of synthetic fertilizers without the replacement of organic matter. However, in the longer term, the reduction in soil fertility will impact on food security, especially taking into account that soil is a nonrenewable resource.

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