Mine Waste Stabilization with Biosludge and Ca Carbonate Residues: Column Experiments


Article Preview

Column experiments investigated the stabilization of waste rock from Ljusnarsberg mine in Kopparberg, Sweden. In order to inhibit the generation of acidic leachate from the waste rock, biosludge and a Ca carbonate – rich residue from the paper industry were mixed with the sulfidic mine waste. The results of the column experiments indicate that the stabilization of the waste rock with the reactive amendments succeeded in maintaining a near – neutral pH in the waste rock leachate, compared to a pH 3 leachate from untreated waste rock. Copper and Zn concentrations in leachate from the untreated waste exceeded 100 mg/L, while these metals were detected at concentrations less than 0.1 and 1 mg/L, respectively, in the leachate from the treated wastes. This study indicates that the stabilization of acid – generating waste rock with biosludge and Ca carbonate residues is effective in preventing the generation of acid mine drainage; the treatment is expected to continue until the reactive amendments are exhausted.



Advanced Materials Research (Volumes 20-21)

Edited by:

Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher




R. B. Herbert et al., "Mine Waste Stabilization with Biosludge and Ca Carbonate Residues: Column Experiments", Advanced Materials Research, Vols. 20-21, pp. 291-294, 2007

Online since:

July 2007




[1] Höglund, L.O., Herbert, R. (Eds. ), Lövgren, L., Öhlander, B., Neretnieks, I., Moreno, L., Malmström, M., Elander, P., Lindvall, M. and Lindström, B. 2004. MiMi - Performance Assessment Main Report, MiMi report 2003: 3, MiMi print, Luleå, 345 p. (text available online, at http: /www. mistra. org/program/mimi/guide).

[2] Nordstrom, D.K. and Alpers, C.N., 1999. Geochemistry of acid mine waters. In: Plumlee, G.S., Logsdon, M.J. (Eds. ) The Environmental Geochemistry of Mineral Deposits, Part A: Processes, techniques, and health issues. Reviews in Economic Geology vol. 6A, Society of Economic Geologists, Littleton, CO, pp.133-160.

[3] Parkhurst, D. L., Appelo, C. A. J., 1999. User's guide to PHREEQC (Version 2) - A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations, U.S. Geological Survey Water-Resources Investigations Report 99-4259.