scholarly journals Distribution and diversity of bacterial communities and sulphate-reducing bacteria in a paddy soil irrigated with acid mine drainage

2016 ◽  
Vol 121 (1) ◽  
pp. 196-206 ◽  
Author(s):  
H. Wang ◽  
C.L. Guo ◽  
C.F. Yang ◽  
G.N. Lu ◽  
M.Q. Chen ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Paddy Soil ◽  
Bacterial Communities ◽  
Mine Drainage ◽  
Sulphate Reducing Bacteria ◽  
Acid Mine ◽  
Reducing Bacteria

scholarly journals Anaerobic Bioreduction of Jarosites and Biofilm Formation by a Natural Microbial Consortium

Minerals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 81 ◽  
Author(s):  
Laura Castro ◽  
M. Blázquez ◽  
Felisa González ◽  
Jesús Muñoz ◽  
Antonio Ballester
Keyword(s):  
Acid Mine Drainage ◽  
Biofilm Formation ◽  
Mine Drainage ◽  
Microbial Consortium ◽  
Laser Scanning Microscopy ◽  
Anaerobic Microorganism ◽  
Sulphate Reducing Bacteria ◽  
Acid Mine ◽  
Obligate Anaerobic ◽  
Reducing Bacteria

Jarosite occurs naturally in acid sulphate soils and is a common feature of streams impacted by acid mine drainage (AMD). Biological reduction of iron-sulphate minerals, such as jarosite, has the potential to contribute to the natural attenuation of acid mine drainage sites. The reduction of different jarosites (including minerals containing precious and toxic metals) by a natural bacterial/microbial consortium was examined in this study. Jarosites was used as a sole terminal electron acceptor via the reductive dissolution of Fe(III) minerals. The production of Fe(II) and the presence of sulphate-reducing bacteria in the consortium lead to the precipitation of metal sulphides immobilizing toxic heavy metals. Microbial attachment and biofilm formation of minerals have a great impact on the production and transformation of minerals and can influence the mobility of metals. After the adaptation to different jarosites, a unique specie was found: Desulfosporosinus orientis. Desulfosporosinus species are sulphate-reducing bacteria and can be found in sulphate-rich heavy metal-polluted environments, such as acid mine/rock drainage sites, being responsible for the sulphides formation. D. orientis is an obligate anaerobic microorganism and is able to reduce Fe(III) D. orientis is an obligate anaerobic microorganism and is able to reduce Fe(III). Confocal laser scanning microscopy and fluorescent lectin-binding analyses (FLBA) were used to study the arrangement and composition of the exopolysaccharides/glycoconjugates in biofilms indicating the presence of mannose, glucose, and N-acetylglucosamine residues. This study provides insights to understand the processes leading to the mobility or retention of metals in mine waste and industrial landfill environments.

Characterization and activity studies of highly heavy metal resistant sulphate-reducing bacteria to be used in acid mine drainage decontamination

2009 ◽  
Vol 166 (2-3) ◽  
pp. 706-713 ◽  
Author(s):  
Mónica Martins ◽  
M. Leonor Faleiro ◽  
Raúl J. Barros ◽  
A. Raquel Veríssimo ◽  
M. Alexandra Barreiros ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Sulphate Reducing Bacteria ◽  
Acid Mine ◽  
Heavy Metal Resistant ◽  
Reducing Bacteria

Treatment of Acid Mine Drainage by Sulphate-reducing Bacteria Using Low Cost Matrices

2007 ◽  
Vol 189 (1-4) ◽  
pp. 149-162 ◽  
Author(s):  
M. C. Costa ◽  
M. Martins ◽  
C. Jesus ◽  
J. C. Duarte
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Low Cost ◽  
Sulphate Reducing Bacteria ◽  
Acid Mine ◽  
Reducing Bacteria
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