id:"swepub:oai:DiVA.org:kth-19466"
Sökning: id:"swepub:oai:DiVA.org:kth-19466" > Phosphate removal u...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03110naa a2200385 4500 | |
| 001 | oai:DiVA.org:kth-19466 | |
| 003 | SwePub | |
| 008 | 100810s2000 | |||||||||||000 ||eng| | |
| 009 | oai:DiVA.org:mdh-21856 | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194662 URI |
| 024 | 7 | a https://doi.org/10.1016/S0043-1354(99)00135-92 DOI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-218562 URI |
| 040 | a (SwePub)kthd (SwePub)mdh | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Johansson, Lena,d 1967-u Royal Institute of Technology4 aut0 (Swepub:mdh)ljm01 |
| 245 | 1 0 | a Phosphate removal using blast furnace slags and opoka-mechanisms |
| 264 | 1 | c 2000 |
| 338 | a print2 rdacarrier | |
| 500 | a QC 20100525 | |
| 520 | a 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. | |
| 653 | a blast furnace slag | |
| 653 | a fertiliser | |
| 653 | a hydroxyapatite | |
| 653 | a opoka | |
| 653 | a P removal mechanisms | |
| 653 | a phosphorus | |
| 700 | 1 | a Gustafsson, Jon Petteru KTH,Mark- och vattenteknik,Royal Institute of Technology, Sweden4 aut0 (Swepub:kth)u1ep3pgj |
| 710 | 2 | a Royal Institute of Technologyb Mark- och vattenteknik4 org |
| 773 | 0 | t Water Researchg 34:1, s. 259-265q 34:1<259-265x 0043-1354x 1879-2448 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-19466 |
| 856 | 4 8 | u https://doi.org/10.1016/S0043-1354(99)00135-9 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-21856 |
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