ESR project descriptions
General ESR project research structure:
P-TRAP consists of 11 ESR projects (see below), which are organised in three scientific work packages (WP1 – WP3) to maximise methodological and thematic interlocking. Each ESR contributes to at least two WPs. Research is driven by applied research questions from the private and non-academic sector and guided by a network of scientists covering a broad area of complementary scientific expertise.
The complimentary non-academic partners cover the different related business areas to facilitate the dissemination and implementation of results achieved within P-TRAP; e.g. application of new technologies to sequester P from water, or production of fertilisers. Regarding this last point, the use of recycled sources of P has been identified as a crucial aspect by all the stakeholders in the use of P. Non-academic partners are key players in P-TRAP. Their involvement ensures an application-oriented perspective on P-TRAP research and maximises acquaintance of ESRs with the non-academic sector. Each ESR will perform secondment projects driven by applied research needs of the non-academic host.
The applied methodology used in the ESR projects is diverse but can be categorised as follows:
- Design and implement field experiments on the retention of P in drainage systems (WP1) and P binding in lakes by Fe amendment (WP2).
- Rigorous investigation of field sites which have been subjected to Fe amendments in the past to study long-term effects which extent of the time scale of years and decades: agricultural sites in which Fe-containing sorbents have been installed in drains (WP1), agricultural areas in which vivianite fertilization had been performed (WP1), and lakes which have experienced addition of Fe(III) salts (WP2).
- Performing laboratory experiments to investigate key processes under controlled conditions. These processes include sorption of P to Fe-containing solids, transformation of Fe minerals induced by aging or by changes in redox conditions, and release of Fe and P from P-containing Fe minerals under rhizosphere conditions (WP3).
- Development of mechanistic and quantitative models for developing a conceptual framework for P-TRAP technologies, designing laboratory and field experiments, and to evaluate the applicability of P-TRAP technologies depending on field conditions (all WPs).