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Release of vanadium from LD-slag by exposure to ARD
Örebro universitet, Akademin för naturvetenskap och teknik.ORCID-id: 0000-0001-7845-6495
Örebro universitet, Akademin för naturvetenskap och teknik.
Örebro universitet, Akademin för naturvetenskap och teknik.ORCID-id: 0000-0001-9348-6481
2010 (Engelska)Ingår i: Mine water and innovative thinking: proceedings 2010 / [ed] Christian Wolkersdorfer, Antje Freund, Cape Breton University Press , 2010, s. 399-402Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

In abatement of acid rock drainage (ARD) slag from the Linz-Donawitz steel making process (LD-slag) provides high neutralizing capacity at low cost. A serious drawback for the use of this by-product is its high content of vanadium, which makes it a potential source of toxic vanadium species. The aim of this work was to determine the most common vanadium species, V(IV) and V(V), leached from LD-slag by artificial ARD. Capillary electrophoresis was employed to quantify the species. From the results an initial dominance of V(V) and increasing abundance of V(IV) with increasing artificial ARD L/s ratio was observed.

Ort, förlag, år, upplaga, sidor
Cape Breton University Press , 2010. s. 399-402
Nationell ämneskategori
Naturvetenskap
Forskningsämne
Kemi
Identifikatorer
URN: urn:nbn:se:oru:diva-24257ISI: 000323234800092ISBN: 978-1-897009-47-5 (tryckt)OAI: oai:DiVA.org:oru-24257DiVA, id: diva2:543011
Konferens
International Mine Water Association symposium: Mine Water and Innovative Thinking (IMWA), Sydney, Nova Scotia, Canada, Sep. 05-09, 2010
Tillgänglig från: 2012-08-06 Skapad: 2012-08-06 Senast uppdaterad: 2019-03-26Bibliografiskt granskad
Ingår i avhandling
1. Utilization of waste materials for extraction of strategic metals: a biogeochemical approach
Öppna denna publikation i ny flik eller fönster >>Utilization of waste materials for extraction of strategic metals: a biogeochemical approach
2017 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Worldwide the modern society produces vast amounts of waste materials containing strategic and valuable metals. Some of them are of substantial economic or environmental significance if controlled recovery of metals can be performed or if uncontrolled release to the environment occurs.

By cultivating Agrostis capillaris on historical sulfidic mine waste the leachate composition can be altered and its volume reduced. In combination with additives such as bark compost and water works granules the concentration of several hazardous metals decreased significantly already after eight weeks. Limited actions can therefore be used to decrease the environmental impact from such waste.

Shale in general contains considerable amounts of strategic metals. If naturally occurring microorganisms are provided with a source of nutrients, increased mobilization of strategic metals can be obtained. By using wood chips as the nutrient source the mobilization of vanadium and uranium increased significantly. Highest mobilization efficiency was observed when the carbon source was put on top of the shale.

Analysis of strategic metals is often performed by argon plasma techniques such as ICP-QMS. However, the use of argon increases the analytical costs. If isotopic information is not needed and slightly higher uncertainties can be accepted, several strategic metals can successfully be quantified by the nitrogen plasma based MP AES. The analytical cost can then be cut with more than 99%.

Ort, förlag, år, upplaga, sidor
Örebro: Örebro University, 2017. s. 79
Serie
Örebro Studies in Environmental Science, ISSN 1650-6278 ; 17
Nyckelord
biogeochemistry, ICP-QMS, MP AES, strategic metals, vanadium, uranium, mine waste, steel slag, shale residues
Nationell ämneskategori
Miljövetenskap
Forskningsämne
Miljövetenskap
Identifikatorer
urn:nbn:se:oru:diva-53960 (URN)978-91-7529-174-1 (ISBN)
Disputation
2017-02-17, Örebro universitet, Hörsalen, Musikhögskolan, Fakultetsgatan 1, Örebro, 10:15 (Svenska)
Opponent
Handledare
Tillgänglig från: 2016-12-14 Skapad: 2016-12-14 Senast uppdaterad: 2017-10-18Bibliografiskt granskad

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http://www.imwa.info/docs/imwa_2010/IMWA2010_Sjoberg_423.pdf

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Sjöberg, ViktorKarlsson, StefanSartz, Lotta

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