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XANES Speciation of...
XANES Speciation of P in Environmental Samples : An Assessment of Filter Media for on-Site Wastewater Treatment
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- Eveborn, David (author)
- KTH,Miljögeokemi och ekoteknik
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- Gustafsson, Jon Petter (author)
- KTH,Miljögeokemi och ekoteknik
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- Hesterberg, Dean (author)
- University Raleigh, Department of Soil Science, North Carolina, USA
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- Hillier, Stephen (author)
- Macaulay Institute, Craigiebuckler, Aberdeen, UK
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(creator_code:org_t)
- 2009-07-24
- 2009
- English.
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In: Environmental Science and Technology. - Washington, DC : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 43:17, s. 6515-6521
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https://kth.diva-por... (primary) (Raw object)
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https://doi.org/10.1...
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Abstract
Subject headings
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- X-ray absorption near edge structure (XANES) spectroscopyis a useful technique for characterization of chemical speciesof phosphorus in complex environmental samples. To developand evaluate bed filters as sustainable on-site wastewater treatment solutions, our objective in this study was to determine the chemical forms of accumulated phosphorus in a selectionof promising filter materials: Filtralite P, Filtra P, Polonite, Absol, blast furnace slag, and wollastonite. Full-scale operational wastewater-treatment systems were sampled and in addition, filter samples collected from laboratory studies provided access to additional media and complementary samples.Phosphorus species were characterized using phosphorus K-edge XANES spectroscopy, complemented by X-ray powder diffraction (XRPD) and attenuated total reflectance Fouriertransform infrared spectroscopy (ATR-FTIR). No systematic differences could be seen in the results between laboratory and full-scale samples. All six filter media contained significant amounts of crystalline calcium phosphates. Some samples also contained amorphous calcium phosphate (>60 % of totalP in Absol). In Filtralite P and blast furnace slag, more than 35 % of the accumulated phosphorus was associated with Fe or Al. Both the power and shortcomings of XANES analysis for characterizing P species in these filter media are discussed.
Subject headings
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Annan naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Other Environmental Engineering (hsv//eng)
Keyword
- AMORPHOUS CALCIUM-PHOSPHATE
- PHOSPHORUS SPECIATION
- SPECTROSCOPY; REMOVAL
- HYDROXYAPATITE
- MECHANISMS
- SOILS
- SLAG
- PRECIPITATION
- FILTER MATERIAL
- Soil chemistry
- Markkemi
- Spectroscopy
- Spektroskopi
- Water engineering
- Vattenteknik
- Environmental engineering
- Miljöteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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