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Impact of temperature on weathering rates: a long term kinetic study on waste rock from Bergslagen, Sweden
Bergskraft Bergslagen, Kopparberg.
Örebro University, School of Science and Technology. (Forskningscentrum Människa-Teknik-Miljö)ORCID iD: 0000-0002-2674-4994
2013 (English)In: Annual International Mine Water Association Conference: Reliable Mine Water Technology / [ed] Brown, A.; Figueroa, L. & Wolkersdorfer, Ch., Colorado, USA: IMWA , 2013, 463-469 p.Conference paper, Published paper (Refereed)
Abstract [en]

To assess the impact of different climatic conditions four weathering systems with waste rock from Bergslagen, Sweden, were followed. Secondary weathering products (ferrous and ferric sulphates and (oxy)hydroxides) on pyrite surfaces can slow down oxidation rates. It was investigated if repeated freezing/thawing could have an effect on the stability of the secondary product layer. After 90 weeks of weathering, freezing/thawing had not enhanced weathering rates, not even in combination with warm, humid air. Highest weathering rates were unexpectedly found in a reference system constantly kept at room temperature, and not in the more forceful humidity cell system.

Place, publisher, year, edition, pages
Colorado, USA: IMWA , 2013. 463-469 p.
Keyword [en]
Climate, prediction, acidity, pH, iron, mineralogy
National Category
Environmental Sciences
Research subject
URN: urn:nbn:se:oru:diva-40592ISBN: 978-0-615-79385-6 (print)OAI: diva2:777761
International Mine Water Association Annual Conference 2013, Golden, USA, 6-9 August, 2013
Available from: 2015-01-08 Created: 2015-01-08 Last updated: 2017-10-17Bibliographically approved

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Sartz, LottaBäckström, Mattias
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