The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

  
       
         
    STUDIA GEOLOGIA - Issue no. Special%20Issue / 2009  
         
  Article:   ENVIRONMENTAL IMPACT AND POLYMETALLIC MINING IN THE NISTRU-BĂIŢA, NORTH ROMANIA.

Authors:  ISTVÁN NAGY-KORODI, CORINA IONESCU, FORRAY FERENC LÁZÁR, VOLKER HOECK. 		 
       
         
  Abstract:  The Nistru–Băiţa river system, north-western Romania, is subject to a still ongoing mining activity focussed on Au, Pb, Zn, and Cu ore extraction. The catchments belong to Romania’s main centre of polymetallic mining and one of the „hot spots” of significant pollution with metals. High concentrations of Fe, Al, Zn, Cu, Pb, as well as SO42- are found in the mining seepage as well as the receiving streams in whole mining area. Sulphate is a predominant ion in these environments, and its interaction with iron and aluminium and other metals and semimetals plays a central role in their speciation, solubility, and toxicity. Occasional treatments with Ca(OH)2 solutions obtained from lime, were applied to neutralize the acid water and precipitate Fe3+ as oxi-hydroxides together with toxic elements.

Keywords: polymetallic mining, alluvial sediments, Romania
  
         
     
         
         
      Back to previous page