منابع مشابه
Acidophilic, heterotrophic bacteria of acidic mine waters.
Obligately acidophilic, heterotrophic bacteria were isolated both from enrichment cultures developed with acidic mine water and from natural mine drainage. The bacteria were grouped by the ability to utilize a number of organic acids as sole carbon sources. None of the strains were capable of chemolithotrophic growth on inorganic reduced iron and sulfur compounds. All bacteria were rod shaped, ...
متن کاملOxygenation of Ferrous Iron in Mine Drainage Waters
P r e v i o u s s t u d i e s of t h e o x i d a t i o n of i r o n p y r i t e and t h e subsequent r e l e a s e of a c i d i t y i n t o mine d r a i n a g e w a t e r s have provided no c o n c l u s i v e r e su l t s i n a s c e r t a i n i n g which of t h e s t e p s i n t h e o v e r a l l r e a c t i o n i s r a t e d e t e r m i n i n g . Although microorganisms have f r e q u e n t ...
متن کاملRecent Developments for Remediating Acidic Mine Waters Using Sulfidogenic Bacteria
Acidic mine drainage (AMD) is regarded as a pollutant and considered as potential source of valuable metals. With diminishing metal resources and ever-increasing demand on industry, recovering AMD metals is a sustainable initiative, despite facing major challenges. AMD refers to effluents draining from abandoned mines and mine wastes usually highly acidic that contain a variety of dissolved met...
متن کاملSelective removal of transition metals from acidic mine waters by novel consortia of acidophilic sulfidogenic bacteria
Two continuous-flow bench-scale bioreactor systems populated by mixed communities of acidophilic sulfate-reducing bacteria were constructed and tested for their abilities to promote the selective precipitation of transition metals (as sulfides) present in synthetic mine waters, using glycerol as electron donor. The objective with the first system (selective precipitation of copper from acidic m...
متن کاملGold, Silver and Iron in Iron Oxy-hydroxide Precipitate Formed in Process of Acid Mine Drainage
Oxidation of sulfide-containing ores is the main cause of Acid Mine Drainage (AMD), which is an environmental problem associated with both the abandoned and active mines. Iron-bearing sulfide minerals can be oxidized and form mine waters with high sulfate content, low pH, high electrical conductivity, high redox potential, and high concentrations of iron, aluminum, and other heavy metals. In th...
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ژورنال
عنوان ژورنال: Nature
سال: 1960
ISSN: 0028-0836,1476-4687
DOI: 10.1038/186660a0