Characterization of opoka as a basis for its use in wastewater treatment

QC 20100525 QC 20111101
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.

Renman, GunnoKTH,Mark- och vattenteknik,Miljögeokemi och ekoteknologi(Swepub:kth)u1kn6t9j (author)
KTHMark- och vattenteknik (creator_code:org_t)

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Environmental Sc ...

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