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Effect of reactive substrates used for phosphorus removal from wastewater on the feritlity of acid soils
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik.
Department of Soil Science and Soil Protection, Agricultural University of Cracow.
Department of Soil Science and Soil Protection, Agricultural University of Cracow.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik.
2008 (Engelska)Ingår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 99, nr 10, s. 4308-4314Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Reactive substrates used in filter systems can reduce phosphorus (P) pollution and, once saturated with P, may be recycled in agriculture. These substrates are usually calcium carbonate derivates with high pH values, which may be particularly beneficial for acid soils. Three reactive substrates (Filtra P, Polonite and wollastonite) saturated with P were used as amendments to an acid soil in a pot experiment. Substrate amendments tended to improve ryegrass yield and P uptake compared with control and potassium phosphate treatments. Polonite produced the highest yield/amendment ratio, while Polonite and Filtra P significantly increased the concentrations of P and Ca in the ryegrass. Addition of all three substrates increased the pH, AL-extractable P and cation exchange capacity of soils during the experiment. These substrates can therefore be applied to acid soils in order to recycle P and improve soil properties.

Ort, förlag, år, upplaga, sidor
2008. Vol. 99, nr 10, s. 4308-4314
Nyckelord [en]
Fertilizer, Filtra P, Phosphorus recycling, Polonite, Pot experiment, Ryegrass, Wollastonite
Nationell ämneskategori
Oceanografi, hydrologi och vattenresurser
Identifikatorer
URN: urn:nbn:se:kth:diva-7348DOI: 10.1016/j.biortech.2007.08.037ISI: 000255109900044Scopus ID: 2-s2.0-40749120107OAI: oai:DiVA.org:kth-7348DiVA, id: diva2:12340
Anmärkning
Uppdaterad från submitted till published: 20101103. QC 20101103Tillgänglig från: 2007-06-20 Skapad: 2007-06-20 Senast uppdaterad: 2018-01-13Bibliografiskt granskad
Ingår i avhandling
1. Phosphorus recycling from wastewater to agriculture using reactive filter media
Öppna denna publikation i ny flik eller fönster >>Phosphorus recycling from wastewater to agriculture using reactive filter media
2007 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
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

Ort, förlag, år, upplaga, sidor
Stockholm: KTH, 2007. s. viii, 28
Serie
Trita-LWR. LIC, ISSN 1650-8629 ; 2039
Nyckelord
Filtra P, phosphorus, Polonite, recycling, sorption, wollastonite
Nationell ämneskategori
Oceanografi, hydrologi och vattenresurser
Identifikatorer
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
Handledare
Anmärkning
QC 20101103Tillgänglig från: 2007-06-20 Skapad: 2007-06-20 Senast uppdaterad: 2018-01-13Bibliografiskt granskad
2. Recycling Filter Substrates used for Phosphorus Removal from Wastewater as Soil Amendments
Öppna denna publikation i ny flik eller fönster >>Recycling Filter Substrates used for Phosphorus Removal from Wastewater as Soil Amendments
2009 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

This thesis studied the viability of recycling filter substrates as soil amendments after being used in on-site systems for phosphorus (P) removal from wastewater. Focus was put on the materials Filtra P and Polonite, which are commercial products used in compact filters in Sweden. A prerequisite for this choice was to review filter materials and P sorption capacity. The filter substrates (Filtra P, Polonite and wollastonite tailings) were recycled from laboratory infiltration columns as soil amendments to a neutral agricultural soil and to an acid meadow soil to study their impacts on soil properties and yield of barley and ryegrass. The amendments tended to improve the yield and showed a liming effect, significantly increasing soil pH and the availability of P. In another experiment, samples of Filtra P and Polonite were equilibrated in batch experiments with the two soils in order to study the P dynamics in the soil-substrate system.  Batch equilibrations confirmed the liming potential of Filtra P and Polonite and showed that improved P availability in soils was strongly dependent on substrate P concentration, phase of sorbed P, and soil type. Finally, samples of Polonite used for household wastewater treatment were recycled as soil amendments to a mountain meadow and to an agricultural field for wheat cropping. The liming effect of Polonite was confirmed under field conditions and the results were similar to those of lime for the mountain meadow soil. However, the results were quite different for the agricultural field, where Polonite did not affect soil pH or any other chemical and physical soil properties investigated and had no impact on wheat yield and quality. The results from field experiments suggested that Polonite can be safely recycled to meadows and cropping fields at rates of 5-10 ton ha-1 but long-term studies are needed to forecast the effects of accumulation.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH, 2009. s. viii, 35
Serie
Trita-LWR. PHD, ISSN 1650-8602 ; 1049
Nyckelord
Compact filter; Filtra P; Phosphorus recycling; Polonite; Soil amendment; Sorption isotherms
Nationell ämneskategori
Markvetenskap Oorganisk kemi Jordbruksvetenskap Vattenteknik Miljövetenskap
Identifikatorer
urn:nbn:se:kth:diva-10204 (URN)978-91-7415-289-0 (ISBN)
Disputation
2009-05-15, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (Engelska)
Opponent
Handledare
Anmärkning
QC 20100708Tillgänglig från: 2009-05-12 Skapad: 2009-04-01 Senast uppdaterad: 2011-10-18Bibliografiskt granskad

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