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Remediation of Historic Waste Rock by Injection of Green Liquor Dregs: Results From a Field Scale Trial, Gladhammar, Southern Sweden
Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kumla, Sweden. (Man-Technology-Environment Research Centre)ORCID iD: 0000-0001-9348-6481
Bergskraft Bergslagen AB, Kumla, Sweden.
Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kumla, Sweden.ORCID iD: 0000-0002-2674-4994
2018 (English)In: Mine Water: Risk to Opportunity / [ed] Wolkersdorfer, Ch., Sartz, L., Weber, A., Burgess, J. and Tremblay, G, Pretoria, South Africa: Tshwane University of Technology , 2018, Vol. II, p. 1124-1129Conference paper, Published paper (Refereed)
Abstract [en]

Mining in Gladhammar, southern Sweden started in the 15th century, generating waste rock containing copper, cobalt, and arsenic. During remediation (2011) some waste rock was preserved, due to its geoscienti- c value, and placed on a geomembrane surface. Eventually, it became apparent that it had a substantial environmental impact (pH 3.8, Cu 96 mg/L, Co 21 mg/L). In 2017, green liquor dregs was injected in order to increase pH and decrease trace element mobility. Ten months a er injection pH was 8.3 and concentrations of copper and cobalt 1.3 mg/L and 1.1 mg/L, respectively. Evaluation will continue for at least five years.

Place, publisher, year, edition, pages
Pretoria, South Africa: Tshwane University of Technology , 2018. Vol. II, p. 1124-1129
Keywords [en]
Mine waste, alkaline, cobalt, copper, arsenic, pH
National Category
Geochemistry
Research subject
Chemistry
Identifiers
URN: urn:nbn:se:oru:diva-71960ISBN: 978-0-620-80650-3 (electronic)OAI: oai:DiVA.org:oru-71960DiVA, id: diva2:1284116
Conference
11th ICARD | IMWA | WISA MWD 2018 Conference – Risk to Opportunity, Pretoria, South Africa, 10-14 September, 2018
Available from: 2019-01-30 Created: 2019-01-30 Last updated: 2019-03-26Bibliographically approved

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