Effect of reactive substrates used for phosphorus removal from wastewater on the feritlity of acid soils
2008 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 99, no 10, 4308-4314 p.Article in journal (Refereed) Published
Reactive substrates used in filter systems can reduce phosphorus (P) pollution and, once saturated with P, may be recycled in agriculture. These substrates are usually calcium carbonate derivates with high pH values, which may be particularly beneficial for acid soils. Three reactive substrates (Filtra P, Polonite and wollastonite) saturated with P were used as amendments to an acid soil in a pot experiment. Substrate amendments tended to improve ryegrass yield and P uptake compared with control and potassium phosphate treatments. Polonite produced the highest yield/amendment ratio, while Polonite and Filtra P significantly increased the concentrations of P and Ca in the ryegrass. Addition of all three substrates increased the pH, AL-extractable P and cation exchange capacity of soils during the experiment. These substrates can therefore be applied to acid soils in order to recycle P and improve soil properties.
Place, publisher, year, edition, pages
2008. Vol. 99, no 10, 4308-4314 p.
Fertilizer, Filtra P, Phosphorus recycling, Polonite, Pot experiment, Ryegrass, Wollastonite
Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:kth:diva-7348DOI: 10.1016/j.biortech.2007.08.037ISI: 000255109900044ScopusID: 2-s2.0-40749120107OAI: oai:DiVA.org:kth-7348DiVA: diva2:12340
Uppdaterad från submitted till published: 20101103.
QC 201011032007-06-202007-06-202011-10-18Bibliographically approved