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FiBL project

Title Pyrolysis of sewage sludge and heavy metal elimination for phosphorus recycling
Title Original Klärschlamm-Pyrolyse und Schwermetallentfrachtung zum Phosphor-Recycling
Official Acronym PyroPhos
Official project number 16381.1 PFEN-IW
FiBL project number P10085

In this research project, a process to recycle phosphorus from sewage sludge is evaluated. The process consists of a pyrolysis at a medium temperature in combination with a decoupled removal of heavy metals, and is evaluated in terms of its economic efficiency. In an extensive study on plant availability, it is tested how effective the products are as fertilizers. Additionally, a strategy for an approval procedure according to the fertiliser regulation is developed.

Project status completed
Start of project 01.11.2014
End of project 31.10.2016
Financing/ Donor
  • Eidgenössisches Departement für Wirtschaft, Bildung und Forschung WBF
  • Kommission für Technologie und Innovation KTI
(Research) Programme
  • Further programmes
Project partners
  • Fachhochschule Nordwestschweiz
  • Hochschule für Life Sciences, Institut für Ecopreneurship
  • CTU Clean Technology Universe AG
  • Eidgenössische Anstalt für Wasserversorgung, Abwasserreinigung und Gewässerschutz
  • Abwasserverband Altenrhein
FiBL project leader/ contact
FiBL project staff
Research area
Date modified 04.06.2019
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