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FiBL project

Title Pyrophos: Further development of alkali pyrolysis for removal of heavy metals and production of a market-grade P-K fertilizer from sewage sludge
Title Original Pyrophos: Weiterentwicklung der Alkalipyrolyse zur Abtrennung von Schwermetallen und Herstellung eines marktfähigen Phosphor-Kalidüngers aus Klärschlamm
Official Acronym PyroPhos II
Official project number 25554.1 PFIW-IW
FiBL project number P10085

For an alkali pyrolysis, the sewage sludge is pyrolysed after adding potassium. Thus, heavy metals are removed in the vapour phase. This results in a P-K fertilizer that can be fully absorbed by plants and that has a market-grade nutrient content. In this project, the process will be optimised and piloted on a larger scale. Further plans are the assessment of the agronomic efficiency, plant design, cost calculation and the draft of a sales concept.

Project status completed
Start of project 01.01.2017
End of project 31.12.2018
Financing/ Donor
  • Kommission für Technologie und Innovation KTI
Project partners
  • Fachhochschule Nordwestschweiz, Hochschule für Life Sciences, Institut für Ecopreneurship
  • CTU Clean Technology Universe AG
  • Abwasserverband Altenrhein
  • Landor
FiBL project leader/ contact
FiBL project staff
Role of FiBL


Research area
Date modified 28.05.2019
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