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Abatement of ARD with solid alkaline waste materials: A meso-scale field test with emphasis on general hydrochemical parameters
Örebro University, School of Science and Technology. (Forskningscentrum Människa-Teknik-Miljö)
Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kopparberg, Sweden.ORCID iD: 0000-0001-9348-6481
Örebro University, School of Science and Technology. (Forskningscentrum Människa-Teknik-Miljö)ORCID iD: 0000-0002-2674-4994
Örebro University, School of Science and Technology. (Forskningscentrum Människa-Teknik-Miljö)ORCID iD: 0000-0002-2104-4593
2009 (English)In: Securing the Future and 8th ICARD, 2009, p. 10 pages-Conference paper, Published paper (Refereed)
Abstract [en]

Abatement of acid mine drainage (ARD) can be made by controlling pH and Eh of the effluents, to optimise retention of major and trace components. The use of solid alkaline waste products from lime production, pulp and paper industry and steel production as well as ashes from bio fuels was evaluated in a meso-scaleexperiment. Each test system hadthree 0.4 m3barrelsthat contained the alkaline waste, a passive support and peat nuggets, in this order.The alkaline wastes consisted of lime kiln dust (LKD), green liquor dreg (GLD), lime mud (LM), LD-slag and fresh and aged ashes. The ARD came either from reactors with acid waste or water taken from a nearby mine shaft. Neutralization was observed for fresh ash, LKD, LD and LM/ash with pH of 6.5, 8.9, 5.3 and 6.6, respectively. The corresponding alkalinities were 0.3, 10.1, 1.8 and 0.5 meqv/l. For carbonated ash and GLD the pH was 3.9 and 4.7 and with acidity remaining. In the best performing systems the average trace metal retention was Pb (>99%), Cu (>99%), Cd (90%) and Zn (70%).

Place, publisher, year, edition, pages
2009. p. 10 pages-
Keywords [en]
Acidic mine waste, alkaline waste products, trace metals
National Category
Earth and Related Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-30866OAI: oai:DiVA.org:oru-30866DiVA, id: diva2:649562
Conference
Securing the Future and 8th ICARD, June 22-26, 2009, Skellefteå, Sweden
Available from: 2013-09-18 Created: 2013-09-18 Last updated: 2019-03-26Bibliographically approved

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Karlsson, StefanSartz, LottaBäckström, MattiasAllard, Bert

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