scholarly journals Evaluation of the use of an alkali modified fly ash as a potential adsorbent for the removal of metals from acid mine drainage

2013 ◽  
Vol 3 (3) ◽  
pp. 567-576 ◽  
Author(s):  
P. K. Sahoo ◽  
S. Tripathy ◽  
M. K. Panigrahi ◽  
Sk. Md. Equeenuddin
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Modified Fly Ash

scholarly journals Assessment of Characteristics of Acid Mine Drainage Treated with Fly Ash

2021 ◽  
Vol 11 (9) ◽  
pp. 3910
Author(s):  
Saba Shirin ◽  
Aarif Jamal ◽  
Christina Emmanouil ◽  
Akhilesh Kumar Yadav
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Power Plants ◽  
Mine Drainage ◽  
Thermal Power ◽  
Mineralogical Characterization ◽  
Acid Mine ◽  
Before And After ◽  
Abandoned Coal Mines

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.

scholarly journals Characterisation of the arsenic resistance genes in Bacillus sp. UWC isolated from maturing fly ash acid mine drainage neutralised solids

2010 ◽  
Vol 106 (1/2) ◽  
Author(s):  
Wicleffe Musingarimi ◽  
Marla Tuffin ◽  
Donald Cowan
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Sodium Arsenite ◽  
Mine Drainage ◽  
Genomic Library ◽  
Coli Strain ◽  
Bacillus Sp ◽  
Sensitive Mutant ◽  
Arsenic Resistance ◽  
Acid Mine

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.

scholarly journals Treatment of acid mine drainage with coal fly ash in a jet loop reactor pilot plant

2020 ◽  
Vol 159 ◽  
pp. 106611 ◽  
Author(s):  
Rosicky Methode Kalombe ◽  
Tunde Victor Ojumu ◽  
Vinny Ndjate Katambwe ◽  
Michael Nzadi ◽  
Denzil Bent ◽  
...  
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Pilot Plant ◽  
Mine Drainage ◽  
Coal Fly Ash ◽  
Loop Reactor ◽  
Acid Mine

Passive neutralisation of acid mine drainage by fly ash and its derivatives: A column leaching study

Fuel ◽  
2008 ◽  
Vol 87 (8-9) ◽  
pp. 1637-1650 ◽  
Author(s):  
W.M. Gitari ◽  
L.F. Petrik ◽  
O. Etchebers ◽  
D.L. Key ◽  
E. Iwuoha ◽  
...  
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Column Leaching ◽  
Acid Mine

Treatment of Acid Mine Drainage with Fly Ash: Removal of Major Contaminants and Trace Elements

2006 ◽  
Vol 41 (8) ◽  
pp. 1729-1747 ◽  
Author(s):  
M. W. Gitari ◽  
L. F. Petrik ◽  
O. Etchebers ◽  
D. L. Key ◽  
E. Iwuoha ◽  
...  
Keyword(s):  
Trace Elements ◽  
Fly Ash ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Ash Removal
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