Research on modified fly ash for high iron and high manganese acid mine drainage treatment

Author(s):  
Liping Zhang ◽  
Miaomiao Xie ◽  
Jie Pang ◽  
Yuanyuan Shi ◽  
Muqi Yang ◽  
...  
2013 ◽  
Vol 3 (3) ◽  
pp. 567-576 ◽  
Author(s):  
P. K. Sahoo ◽  
S. Tripathy ◽  
M. K. Panigrahi ◽  
Sk. Md. Equeenuddin

2021 ◽  
Vol 11 (9) ◽  
pp. 3910
Author(s):  
Saba Shirin ◽  
Aarif Jamal ◽  
Christina Emmanouil ◽  
Akhilesh Kumar Yadav

Acid mine drainage (AMD) occurs naturally in abandoned coal mines, and it contains hazardous toxic elements in varying concentrations. In the present research, AMD samples collected from an abandoned mine were treated with fly ash samples from four thermal power plants in Singrauli Coalfield in the proximate area, at optimized concentrations. The AMD samples were analyzed for physicochemical parameters and metal content before and after fly ash treatment. Morphological, geochemical and mineralogical characterization of the fly ash was performed using SEM, XRF and XRD. This laboratory-scale investigation indicated that fly ash had appreciable neutralization potential, increasing AMD pH and decreasing elemental and sulfate concentrations. Therefore, fly ash may be effectively used for AMD neutralization, and its suitability for the management of coalfield AMD pits should be assessed further.


2011 ◽  
Vol 66 (8) ◽  
pp. 2387-2401 ◽  
Author(s):  
Thomas Genty ◽  
Bruno Bussière ◽  
Robin Potvin ◽  
Mostafa Benzaazoua ◽  
Gérald J. Zagury

Chemosphere ◽  
2019 ◽  
Vol 218 ◽  
pp. 955-965 ◽  
Author(s):  
Seongchul Ryu ◽  
Gayathri Naidu ◽  
Md Abu Hasan Johir ◽  
Youngkwon Choi ◽  
Sanghyun Jeong ◽  
...  

2010 ◽  
Vol 106 (1/2) ◽  
Author(s):  
Wicleffe Musingarimi ◽  
Marla Tuffin ◽  
Donald Cowan

An arsenic resistant Bacillus sp. UWC was isolated from fly ash acid mine drainage (FA-AMD) neutralised solids. A genomic library was prepared and screened in an arsenic sensitive mutant Escherichia coli strain for the presence of arsenic resistance (ars) genes. Sequence analysis of a clone conferring resistance to both sodium arsenite and sodium arsenate revealed homologues to the arsR (regulatory repressor), arsB (membrane located arsenite pump), arsC (arsenate reductase), arsD (second regulatory repressor and a metallochaperone) and arsA (ATPase) genes from known arsenic resistance operons. The Bacillus sp. UWC arsRBCDA genes were shown to be arranged in an unusual manner with the arsDA genes immediately downstream of arsC.


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