Role of Methane-Producing and Sulfate-Reducing Bacteria in the Destruction of Organic Matter

1980 ◽  
pp. 235-242 ◽  
Author(s):  
S. S. Belyaev ◽  
A. Yu. Lein ◽  
M. V. Ivanov
Keyword(s):  
Organic Matter ◽  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Reducing Bacteria

scholarly journals Competitive Growth of Sulfate-Reducing Bacteria with Bioleaching Acidophiles for Bioremediation of Heap Bioleaching Residue

2020 ◽  
Vol 17 (8) ◽  
pp. 2715 ◽  
Author(s):  
Aung Kyaw Phyo ◽  
Yan Jia ◽  
Qiaoyi Tan ◽  
Heyun Sun ◽  
Yunfeng Liu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Sulfate Reducing Bacteria ◽  
Sulfide Minerals ◽  
Sulfate Reducing ◽  
Heap Bioleaching ◽  
Waste Rocks ◽  
Sulfur Oxidizing ◽  
Reducing Bacteria

Mining waste rocks containing sulfide minerals naturally provide the habitat for iron- and sulfur-oxidizing microbes, and they accelerate the generation of acid mine drainage (AMD) by promoting the oxidation of sulfide minerals. Sulfate-reducing bacteria (SRB) are sometimes employed to treat the AMD solution by microbial-induced metal sulfide precipitation. It was attempted for the first time to grow SRB directly in the pyritic heap bioleaching residue to compete with the local iron- and sulfur-oxidizing microbes. The acidic SRB and iron-reducing microbes were cultured at pH 2.0 and 3.0. After it was applied to the acidic heap bioleaching residue, it showed that the elevated pH and the organic matter was important for them to compete with the local bioleaching acidophiles. The incubation with the addition of organic matter promoted the growth of SRB and iron-reducing microbes to inhibit the iron- and sulfur-oxidizing microbes, especially organic matter together with some lime. Under the growth of the SRB and iron-reducing microbes, pH increased from acidic to nearly neutral, the Eh also decreased, and the metal, precipitated together with the microbial-generated sulfide, resulted in very low Cu in the residue pore solution. These results prove the inhibition of acid mine drainage directly in situ of the pyritic waste rocks by the promotion of the growth of SRB and iron-reducing microbes to compete with local iron and sulfur-oxidizing microbes, which can be used for the source control of AMD from the sulfidic waste rocks and the final remediation.

scholarly journals Experimental study on the treatment of acid mine drainage by modified corncob fixed SRB sludge particles

RSC Advances ◽  
2019 ◽  
Vol 9 (33) ◽  
pp. 19016-19030 ◽  
Author(s):  
Yan-Rong Dong ◽  
Jun-Zhen Di ◽  
Ming-Xin Wang ◽  
Ya-Dong Ren
Keyword(s):  
Experimental Study ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Cost Effective ◽  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Acid Mine ◽  
Effective System ◽  
Reducing Bacteria

A cost-effective system for acid mine drainage removal was developed with the key role of alkaline H2O2 modified corncob and sulfate reducing bacteria.

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