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Characterization of opoka as a basis for its use in wastewater treatment
KTH, Superseded Departments, Land and Water Resources Engineering. (Miljögeokemi och ekoteknologi)
2004 (English)In: Polish Journal of Environmental Studies, ISSN 1230-1485, Vol. 13, no 1, 15-20 p.Article in journal (Refereed) Published
Abstract [en]

Opoka, as a silica-calcite sedimentary rock, occurs in south-eastern Europe and Russia. Stratigraphical studies down to 8 in depth were performed in Belzec, Poland, where samples were taken for further analyses. Vertical layers represented a heavy-weight opoka consisting of relatively more CaCO3 than the horizontal layers of lightweight opoka dominated by SiO2. Opoka had a mean bulk density of 1.34 g/cm(3), a porosity of 44.5 % and a specific surface area of 64 m(2)/g. Opoka, especially after heated to over 900degreesC can be used as reactive filter media for phosphorus removal. Maximum sorption capacity was 119.6 g PO4-P/ kg. Element analysis of the rock did not reveal any anomaly from that expected, and it was concluded that its element content does not devaluate opoka as a sorbent used in ecological wastewater treatment.

Place, publisher, year, edition, pages
2004. Vol. 13, no 1, 15-20 p.
Keyword [en]
calcination, fertilizer, gaize, opoka, phosphorus sorption, Polonite (R), reactive media
National Category
Environmental Sciences
URN: urn:nbn:se:kth:diva-23191ISI: 000189090000002ScopusID: 2-s2.0-1842537986OAI: diva2:341889
QC 20100525 QC 20111101Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2012-03-21Bibliographically approved

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