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Publications

NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.

NIBIO's Scientific Publications →

2013

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Authors

Teis Nørgaard Mikkelsen Nicholas Clarke Alina Danielewska Richard Fischer

Abstract

No abstract has been registered

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Authors

Bolette Bele Ann Norderhaug

Abstract

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Authors

Till Seehusen

Abstract

No abstract has been registered

Authors

Merete Dees Mads Sønderkær Monica Skogen Even Sannes Riiser Vinh Hong Le Kåre Lehman Nielsen May Bente Brurberg

Abstract

No abstract has been registered

Authors

Habtamu Alem

Abstract

No abstract has been registered

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Authors

Tim Josling Klaus Mittenzwei

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No abstract has been registered

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Authors

Ove Bergersen Ketil Haarstad

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No abstract has been registered

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Authors

Gudny Okkenhaug Gijs D. Breedveld Terje Kirkeng Marit Lægreid Trond Mæhlum Jan Mulder

Abstract

Antimony (Sb) in air pollution control (APC) residues from municipal solid waste incineration has gained increased focus due to strict Sb leaching limits set by the EU landfill directive. Here we study the chemical speciation and solubility of Sb at the APC treatment facility NOAH Langøya (Norway), where iron (Fe)-rich sulfuric acid (∼3.6 M, 2.3% Fe(II)), a waste product from the industrial extraction of ilmenite, is used for neutralization. Antimony in water extracts of untreated APC residues occurred exclusively as pentavalent antimonate, even at low pH and Eh values. The Sb solubility increased substantially at pH <10, possibly due to the dissolution of ettringite (at alkaline pH) or calcium (Ca)-antimonate. Treated APC residues, stored anoxically in the laboratory, simulating the conditions at the NOAH Langøya landfill, gave rise to decreasing concentrations of Sb in porewater, occurring exclusively as Sb(V). Concentrations of Sb decreased from 87 - 918 μg L−1 (day 3) to 18–69 μg L−1 (day 600). We hypothesize that an initial sorption of Sb to Fe(II)-Fe(III) hydroxides (green rust) and eventually precipitation of Ca- and Fe-antimonates (tripuhyite; FeSbO4) occurred. We conclude that Fe-rich, sulfuric acid waste is efficient to immobilize Sb in APC residues from waste incineration.

Authors

Trond Mæhlum

Abstract

No abstract has been registered

Authors

Paal Krokene

Abstract

No abstract has been registered