id:"swepub:oai:DiVA.org:kth-19466"
Sökning: id:"swepub:oai:DiVA.org:kth-19466" > Phosphate removal u...
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
- Johansson, Lena,1967-Royal Institute of Technology (författare)
Phosphate removal using blast furnace slags and opoka-mechanisms
- Artikel/kapitelEngelska2000
Förlag, utgivningsår, omfång ...
- 2000
- printrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:kth-19466
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-19466URI
- https://doi.org/10.1016/S0043-1354(99)00135-9DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-21856URI
Kompletterande språkuppgifter
- Språk:engelska
- Sammanfattning på:engelska
Ingår i deldatabas
- SwePubSwePub
Klassifikation
Anmärkningar
- QC 20100525
- The abiotic sorption efficiency of on-site wastewater treatment systems can be improved by using a strongly sorbing filter material that, if it retains phosphorus (P) in a plant available way, can be used as fertiliser when P saturation is achieved. Two materials, blast furnace slag and the siliceous sedimentary rock opoka, have shown a high P sorption capacity and were included in a set of experiments to investigate the P retention mechanisms from model P-solution. Experiments focusing on the P sorption, capacity and calcium (Ca) and PO4 determination were carried out. The pH was also measured. The P sorption experiment showed that some slags were efficient P retainers, while the opoka was the least efficient P retainer. The pH decreased in all samples as a function of P addition. In the slag samples, the Ca concentration also decreased as a function of P addition, suggesting Ca-P precipitation as the major P removal mechanism for the slag. The Ca and PO4 speciation data ruled out the formation of amorphous calcium phosphates and/or octacalcium phosphate as the major P removal mechanism. However, the calculated ion activity products displayed clear evidence that hydroxyapatite had precipitated above a certain critical supersaturation limit. This would explain the poor P retention efficiency of the opoka samples in this study as the ion activity products were too low. The finding that direct hydroxyapatite formation is the predominant P removal mechanism might have important implications for their possible use as fertiliser due to the poor solubility of hydroxyapatite.
Ämnesord och genrebeteckningar
- blast furnace slag
- fertiliser
- hydroxyapatite
- opoka
- P removal mechanisms
- phosphorus
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Gustafsson, Jon PetterKTH,Mark- och vattenteknik,Royal Institute of Technology, Sweden(Swepub:kth)u1ep3pgj (författare)
- Royal Institute of TechnologyMark- och vattenteknik (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Water Research34:1, s. 259-2650043-13541879-2448
Internetlänk
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
Hitta mer i SwePub
- Av författaren/redakt...
- Johansson, Lena, ...
- Gustafsson, Jon ...
- Artiklar i publikationen
- Water Research
- Av lärosätet
- Kungliga Tekniska Högskolan
- Mälardalens universitet
Sök utanför SwePub
- Sök vidare i:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - Nationella bibliotekssystem
- LIBRIS.kb.se
