Exfoliated Graphitic Carbon Nitride for the Fast Adsorption of Metal Ions from Acid Mine Drainage: A Case Study from the Sungun Copper Mine

2018 ◽  
Vol 38 (2) ◽  
pp. 335-341 ◽  
Author(s):  
Afshin Akbari Dehkharghani
Keyword(s):  
Acid Mine Drainage ◽  
Metal Ions ◽  
Carbon Nitride ◽  
Mine Drainage ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Copper Mine ◽  
Sungun Copper Mine ◽  
Acid Mine

scholarly journals Recent developments in materials used for the removal of metal ions from acid mine drainage

2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Tebogo M. Mokgehle ◽  
Nikita T. Tavengwa
Keyword(s):  
Heavy Metal ◽  
Surface Water ◽  
Acid Mine Drainage ◽  
Metal Ions ◽  
Mine Drainage ◽  
Acid Mine ◽  
Adsorption Capacities ◽  
Ion Imprinted ◽  
Wide Range ◽  
Ion Imprinted Polymers

AbstractAcid mine drainage is the reaction of surface water with sub-surface water located on sulfur bearing rocks, resulting in sulfuric acid. These highly acidic conditions result in leaching of non-biodegradeable heavy metals from rock which then accumulate in flora, posing a significant environmental hazard. Hence, reliable, cost effective remediation techniques are continuously sought after by researchers. A range of materials were examined as adsorbents in the extraction of heavy metal ions from acid mine drainage (AMD). However, these materials generally have moderate to poor adsorption capacities. To address this problem, researchers have recently turned to nano-sized materials to enhance the surface area of the adsorbent when in contact with the heavy metal solution. Lately, there have been developments in studying the surface chemistry of nano-engineered materials during adsorption, which involved alterations in the physical and chemical make-up of nanomaterials. The resultant surface engineered nanomaterials have been proven to show rapid adsorption rates and remarkable adsorption capacities for removal of a wide range of heavy metal contaminants in AMD compared to the unmodified nanomaterials. A brief overview of zeolites as adsorbents and the developent of nanosorbents to modernly applied magnetic sorbents and ion imprinted polymers will be discussed. This work provides researchers with thorough insight into the adsorption mechanism and performance of nanosorbents, and finds common ground between the past, present and future of these versatile materials.

Immobilization of Metal Ions from Acid Mine Drainage by Coal Bottom Ash

2017 ◽  
Vol 228 (9) ◽  
Author(s):  
Varinporn Asokbunyarat ◽  
Eric D. van Hullebusch ◽  
Piet N. L. Lens ◽  
Ajit P. Annachhatre
Keyword(s):  
Acid Mine Drainage ◽  
Metal Ions ◽  
Mine Drainage ◽  
Bottom Ash ◽  
Coal Bottom Ash ◽  
Acid Mine
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