Cradle to cradle solution to problematic waste materials from mine and coal power station: Acid mine drainage, coal fly ash and carbon dioxide

2019 ◽  
Vol 30 ◽  
pp. 100474 ◽  
Author(s):  
Godfrey Madzivire ◽  
Ramogohlo M. Maleka ◽  
Memory Tekere ◽  
Leslie F. Petrik
Keyword(s):  
Carbon Dioxide ◽  
Fly Ash ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Coal Fly Ash ◽  
Waste Materials ◽  
Power Station ◽  
Acid Mine ◽  
Cradle To Cradle ◽  
Coal Power

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

scholarly journals Effectiveness of Fly Ash and Red Mud as Strategies for Sustainable Acid Mine Drainage Management

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 707
Author(s):  
Viktoria Keller ◽  
Srećko Stopić ◽  
Buhle Xakalashe ◽  
Yiqian Ma ◽  
Sehliselo Ndlovu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Red Mud ◽  
Mine Drainage ◽  
Ph Value ◽  
Coal Fly Ash ◽  
Precipitation Process ◽  
Acid Mine ◽  
Initial Ph ◽  
Acidic Mine Water

Acid mine drainage (AMD), red mud (RM) and coal fly ash (CFA) are potential high environmental pollution problems due to their acidity, toxic metals and sulphate contents. Treatment of acidic mine water requires the generation of enough alkalinity to neutralize the excess acidity. Therefore, red mud types from Germany and Greece were chosen for the neutralization of AMD from South Africa, where this problem is notorious. Because of the high alkalinity, German red mud is the most promising precipitation agent achieving the highest pH-values. CFA is less efficient for a neutralization and precipitation process. An increase in temperature increases the adsorption kinetics. The maximum pH-value of 6.0 can be reached by the addition of 100 g German red mud at 20 °C to AMD-water with an initial pH value of 1.9. German red mud removes 99% of the aluminium as aluminium hydroxide at pH 5.0. The rare earth elements (yttrium and cerium) are adsorbed by Greek red mud with an efficiency of 50% and 80% at 60 °C in 5 min, respectively.

Adsorption of Iron(II) from Acid Mine Drainage Contaminated Groundwater Using Coal Fly Ash, Coal Bottom Ash, and Bentonite Clay

2016 ◽  
Vol 227 (3) ◽  
Author(s):  
Emelda Obianuju Orakwue ◽  
Varinporn Asokbunyarat ◽  
Eldon R. Rene ◽  
Piet N. L. Lens ◽  
Ajit Annachhatre
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Coal Fly Ash ◽  
Bottom Ash ◽  
Bentonite Clay ◽  
Contaminated Groundwater ◽  
Coal Bottom Ash ◽  
Acid Mine

Fate of the naturally occurring radioactive materials during treatment of acid mine drainage with coal fly ash and aluminium hydroxide

2014 ◽  
Vol 133 ◽  
pp. 12-17 ◽  
Author(s):  
Godfrey Madzivire ◽  
Peane P. Maleka ◽  
Viswanath R.K. Vadapalli ◽  
Wilson M. Gitari ◽  
Robert Lindsay ◽  
...  
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Aluminium Hydroxide ◽  
Mine Drainage ◽  
Coal Fly Ash ◽  
Radioactive Materials ◽  
Acid Mine ◽  
Naturally Occurring ◽  
Naturally Occurring Radioactive Materials

scholarly journals Review on Treatment of Acid Mine Drainage with Waste Materials: A Novel Approach

2018 ◽  
Vol 20 (3) ◽  
pp. 512-528 ◽  
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Organic Waste ◽  
Mine Drainage ◽  
Metal Removal ◽  
Metallurgical Slag ◽  
Waste Materials ◽  
Maintenance Cost ◽  
Cement Kiln ◽  
Acid Mine

<p>The present study systematically and comprehensively reviewed different aspects of treating Acid Mine Drainage (AMD) with active treatment and waste materials. The work also critically reviews the status and the factors associated with the treatment process. Although, conventional active methods are very efficient but they are mainly associated with costly material as well as high maintenance cost which enhances the cost of entire treatment system. Waste materials such as fly ash, metallurgical slag, zero valent iron (ZVI), cement kiln dust (CKD), organic waste such as peat humic agent (PHA) and rice husk can be efficiently used for the treatment of AMD. However, efficiency of different waste material varied from each other due to the variation in their physical and chemical characteristics. The results from the investigation showed that fly ash, metallurgical slag and CKD raise the pH of acidic solution more, in comparison to ZVI and organic waste, due to their richness in lime content. Furthermore, fly ash can be efficiently converted and utilized in its other derivative such as chemically modified fly ash and zeolite. Efficiency of ZVI is hindered by the presence of higher concentration of total dissolved solids. PHA can treat AMD that is mild acidic in nature. Besides, long retention time is required for the removal of heavy metals and sulfur with organic waste and sulfate reducing bacteria (SRB). The study also potentially reviewed that metal removal from AMD varied due to composition of AMD and the characteristics of waste materials. However, waste materials demand more attention for its practical applicability in field conditions due to its richness, higher possibility for recycling and reuse, low installation cost and harmless nature towards the environment.</p>

Utilizing acid mine drainage sludge and coal fly ash for phosphate removal from dairy wastewater

2013 ◽  
Vol 34 (24) ◽  
pp. 3177-3182 ◽  
Author(s):  
Y.R. Wang ◽  
Daniel C.W. Tsang ◽  
William E. Olds ◽  
Paul A. Weber
Keyword(s):  
Fly Ash ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Coal Fly Ash ◽  
Phosphate Removal ◽  
Dairy Wastewater ◽  
Acid Mine
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