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Phosphorus sorption capacity of different types of opoka
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering.
Department of Soil Science and Soil Protection, Agricultural University of Cracow, Poland.
Department of Soil Science and Soil Protection, Agricultural University of Cracow, Poland.
2007 (English)In: Annals of Warsaw University of Life Sciences – SGGW Land Reclamation, ISSN 1898-8857, Vol. 38, 11-18 p.Article in journal (Refereed) Published
Abstract [en]

Phosphorus sorption capacity ofdifferent types of opoka. The bedrock opoka hasbeen lately reported as an appropriate reactivemedia for onsite wastewater treatment systemsdue to its high phosphorus (P) sorption capacity.However, variations on its chemical compositionmay affect its reactivity with P, therefore leadingto a variable P removal effi ciency. In this paper,the P-sorption capacity of three different typesof opoka from the region of Miechów, Poland,is reported. According to the silica and carbonatecontent, opoka samples were classifi ed as light--weight and heavy-weight opoka. When heatedover 900°C, opoka showed a very high P-sorptioncapacity that was well correlated to its Ca content.P-sorption isotherms from batch experiments withan artifi cial P solution were plotted and fi tted tothe Langmuir and Freundlich adsorption models.The Freundlich isotherm appeared to model betterthe P-sorption of light opoka and the Langmuirisotherm of heavy opoka, suggesting differentdominating mechanisms of P-sorption by lightand heavy opoka.

Place, publisher, year, edition, pages
2007. Vol. 38, 11-18 p.
Keyword [en]
calcium, freundlich isotherm, langmuir isotherm, opoka, phosphorus removal, silica, sorption
National Category
Oceanography, Hydrology, Water Resources
Identifiers
URN: urn:nbn:se:kth:diva-7346OAI: oai:DiVA.org:kth-7346DiVA: diva2:12338
Note
QC 20101103Available from: 2007-06-20 Created: 2007-06-20 Last updated: 2010-11-03Bibliographically approved
In thesis
1. Phosphorus recycling from wastewater to agriculture using reactive filter media
Open this publication in new window or tab >>Phosphorus recycling from wastewater to agriculture using reactive filter media
2007 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis focused on testing the suitability of reactive filter media used for phosphorus (P) removal from wastewater as fertilizers, thus recycling P to agriculture. The work compared the P sorption capacity of several materials in order to assess their suitability as a source of P for plants. The selected materials (Filtra P, Polonite and wollastonite) were saturated with P and used as soil amendments in a pot experiment. The amendments tended to improve the yield of barley and ryegrass compared with no P addition. The amendments also increased soil pH, P availability and cation exchange capacity in the studied soils. The substrates studied here can be of particular interest for acid soils. Of the materials studied, Polonite appears to be the most suitable substrate for the recycling of P from wastewater to agriculture

Place, publisher, year, edition, pages
Stockholm: KTH, 2007. viii, 28 p.
Series
Trita-LWR. LIC, ISSN 1650-8629 ; 2039
Keyword
Filtra P, phosphorus, Polonite, recycling, sorption, wollastonite
National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:kth:diva-4449 (URN)978-91-7178-715-6 (ISBN)
Presentation
2007-06-15, V23, KTH, Teknikringen 72, Stockholm, 13:15
Opponent
Supervisors
Note
QC 20101103Available from: 2007-06-20 Created: 2007-06-20 Last updated: 2010-11-03Bibliographically approved

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