Effects of the co-disposal of lignite fly ash and coal mine waste rocks on AMD and leachate quality

2018 ◽  
Vol 26 (4) ◽  
pp. 4104-4115 ◽  
Author(s):  
Asif Qureshi ◽  
Christian Maurice ◽  
Björn Öhlander
Keyword(s):  
Fly Ash ◽  
Coal Mine ◽  
Mine Waste ◽  
Coal Mine Waste ◽  
Lignite Fly Ash ◽  
Waste Rocks ◽  
Leachate Quality

scholarly journals Co-disposal of lignite fly ash and coal mine waste rock for neutralisation of AMD

2021 ◽  
Author(s):  
Asif Qureshi ◽  
Christian Maurice ◽  
Björn Öhlander
Keyword(s):  
Fly Ash ◽  
Mine Waste ◽  
Particle Size Effect ◽  
Primary Objective ◽  
Acidic Ph ◽  
Slowing Down ◽  
Lignite Fly Ash ◽  
Mine Waste Rock ◽  
Waste Rocks ◽  
Leachate Quality

AbstractWaste rocks (WRs) from a lignite-producing coalfield and fly ash (FA) produced from the same lignite have been investigated in this study with a primary objective to determine the potential for co-disposal of WRs and FA to reduce the environmental contamination. Mixing WRs with FA and covering WRs with FA have been investigated. Particle size effect caused ≤2 mm particles to produce low pH (~2) and metal-laden leachates, indicating higher sulphide minerals’ reactivity compared to larger particles (≤10 mm, pH ~ 4). Co-disposal of FA as mixture showed an instantaneous effect, resulting in higher pH (~3–6) and better leachate quality. However, acidity produced by secondary mineralisation caused stabilisation of pH at around 4.5–5. In contrast, the pH of the leachates from the cover method gradually increased from strongly acidic (pH ~ 2) to mildly acidic (pH ~ 4–5) and circumneutral (pH ~ 7) along with a decrease in EC and elemental leaching. Gradually increasing pH can be attributed to the cover effect, which reduces the oxygen diffusion, thus sulphide oxidation. FA cover achieved the pH necessary for secondary mineralisation during the leaching experiment. The co-disposal of FA as cover and/or mixture possesses the potential for neutralisation and/or slowing down AMD and improving leachate quality.

scholarly journals Compression of coal mine waste and its mictures wid addition of fly ash

2016 ◽  
Vol 15 (2) ◽  
pp. 83-92
Author(s):  
Katarzyna Kamińska ◽  
◽  
Mariusz Cholewa ◽  
Michał Stanisławski
Keyword(s):  
Fly Ash ◽  
Coal Mine ◽  
Mine Waste ◽  
Coal Mine Waste

scholarly journals Compression of coal mine waste and its mictures wid addition of fly ash

2016 ◽  
Vol 15 (2) ◽  
pp. 83-92
Author(s):  
Katarzyna Kamińska ◽  
◽  
Mariusz Cholewa ◽  
Michał Stanisławski
Keyword(s):  
Fly Ash ◽  
Coal Mine ◽  
Mine Waste ◽  
Coal Mine Waste

Phytoremediation Studies on Coal Mine Waste and Coal Fly Ash by Leucaena Leucocephala

2011 ◽  
pp. 252-255
Author(s):  
Satpal Singh Bisht ◽  
Rojita Mishra ◽  
B. Praveen ◽  
Amrita Kumari Panda ◽  
Koustava K. Panda ◽  
...  
Keyword(s):  
Fly Ash ◽  
Coal Mine ◽  
Leucaena Leucocephala ◽  
Mine Waste ◽  
Coal Fly Ash ◽  
Coal Mine Waste

scholarly journals Assessment of Rosa Majalis Herrm-Fruits Contamination with Heavy Metals in Open-Pit Coal Mine Waste Dumps

2015 ◽  
Vol 9 (4) ◽  
Author(s):  
Irina Nikolaevna Egorova ◽  
Olga Alexandrovna Neverova ◽  
Lyubov Sergeevna Dyshlyuk
Keyword(s):  
Heavy Metals ◽  
Coal Mine ◽  
Mine Waste ◽  
Open Pit ◽  
Coal Mine Waste ◽  
Waste Dumps

scholarly journals Characterization and Potential Use of Biochar for the Remediation of Coal Mine Waste Containing Efflorescent Salts

2017 ◽  
Vol 9 (11) ◽  
pp. 2100 ◽  
Author(s):  
Luis Muegue ◽  
Julio González ◽  
Gustavo Mesa
Keyword(s):  
Coal Mine ◽  
Mine Waste ◽  
Coal Mine Waste ◽  
Potential Use

scholarly journals In situ reclamation of closed coal mine waste in Korea using coal ash

2017 ◽  
Vol 60 (3) ◽  
pp. 265-272 ◽  
Author(s):  
Sung Chul Kim ◽  
Se Jin Oh ◽  
Seung Min Oh ◽  
Sang Phil Lee ◽  
Jae E. Yang
Keyword(s):  
Coal Mine ◽  
Mine Waste ◽  
Coal Ash ◽  
Coal Mine Waste
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