Research project

Advanced Nitrogen Recovery from Sludge and other Organic Waste Materials (NITRO)

Project Details

Start date: 01/09/2018

End date: 31/08/2022


Academy of Finland


Sustaining the increasing world population requires
more enhanced food production, which has long been dependent on the consumption
of fertilizers, especially the ones containing nitrogen (N). The growing demand
for the N fertilizers has been primarily fulfilled by industrial fixation of
atmospheric nitrogen (N2) to ammonia (NH3) via a Haber-Bosch process.

Recirculating nitrogen that has already been fixed in
a reactive form and introduced to a food chain is seen as a potential response
to the challenge. However, the recovery possibilities of nitrogen, which is
largely released in the form of ammonia during the thermal drying of sewage
sludge or biosolids, for its further recycling, have not been examined.
Therefore, a notable knowledge gap on the mechanisms of nitrogen recovery
during the thermal drying of sewage sludge and similar-in-origin biosolids exists.

The overall scientific goal of the proposed research
project is to develop a novel method and a concept for advanced nitrogen
recovery during thermal drying of sewage sludge and similar in origin

Nitrogen recovery

Last updated on 2019-11-11 at 13:17