Initial release of barium from fly ash during AMD treatment
The effect of adding acidic mine waste leaching water to an alkaline fly ash was studied during twenty days. The experiment simulated a capacity test of the ash, which was continuously added acidic water at increasing liquid-to-solid ratios. This part of the study focuses on the behaviour of barium, strontium, chromium and molybdenum at high pHs (pH 12.4-12.8). An extreme increase in barium concentration was observed at high pH, which was also seen for strontium and aluminium, as well as a simultaneous reduction in concentration of molybdenum and chromium in solution. The decline of chromium and molybdenum is probably due to incorporation into hydrocalumite and the loss of barium due to dissolution of the aluminium silicate mineral celsian.
AMD celsian fly ash and hydroealumite
Lotta Sartz Mattias Backstrom Stefan Karlsson Bert Allard
Bergskraft, Harald Olsgatan 1, 71431 Kopparberg, Sweden Man-Technology-Environment Research Centre, Man-Technology-Environment Research Centre, Orebro University, 70182 Orebro, Sweden Man-echnology-Environment Research Centre, Orebro University, 70182 Orebro, Sweden
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
995-996
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）