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A series of single extractions and short-term plant tests were performed in order to test a variety of inexpensive mineral amendments for the in situ inactivation of trace elements on the fine-grained spoil of the former gold mine of Jales, Portugal. Based on the results of these tests, mesocosms (lysimeters) were constructed and a small-scale semi-field trial was carried out since 1998. The long-term...
A combination of metal immobilising agents and metal tolerant plants has been utilised in order to reduce the environmental impact of the acidic metal contaminated Jales mine spoil tips. The addition of Beringite (a modified aluminosilicate), steel shots (iron bearing material) and organic matter as spoil amendments resulted in changes in arsenate (As) concentrations and pH of spoil material and improved...
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