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

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

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.

Removal of Cu, Ni, Zn, Cd and Pb in Artificial Acid Mine Drainage by Modified Oxygen Releasing Compounds

2014 ◽  
Vol 535 ◽  
pp. 758-763 ◽  
Author(s):  
Si Min Liu ◽  
Yu Long Liu ◽  
Jia Yu Song ◽  
Hao Deng
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Acid Mine Drainage ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Mine Drainage ◽  
Main Ingredient ◽  
Removal Rates ◽  
Acid Mine ◽  
Pb Ions

The aim of the study is to investigate removal of Cu, Ni, Zn, Cd and Pb in acid mine drainage (AMD) using modified oxygen releasing compounds (MORCs) of which CaO2 is the main ingredient. When the MORCs are placed into AMDs, OH- will be released gently and continuously which can neutralize H+ and precipitate heavy metal ions as hydroxide/carbonates. Four types of artificial AMDs contained Cu, Ni, Zn, Cd and Pb ions with/without sulfate were prepared in the laboratory. The removal rates of the heavy metals were measured after adding MORCs to the artificial AMDs. The results showed that the removal rates of Cu, Ni, Zn, Cd and Pb in all 4 artificial AMDs, after 72 hours, are more than 97%, even to 100%. However, after 96 hours, Cu, Ni, Zn, Cd and Pb deposits can be re-dissolved by 16.4%, 11.2%, 7.0%, 5.0% and 4.8%, respectively, in the single-metal artificial AMDs; Pb and Cd deposits are more stable. Sulfate in the multi-metal artificial AMD hardly has effects on re-dissolution of the heavy metal deposits; and only Ni deposits in the single-metal AMD with sulfate and Cu deposits in the single-metal AMD without sulfate are re-dissolved significantly. It suggested that the MORCs should be an efficient material to remove Cu, Ni, Zn, Cd and Pb from AMDs after 72 hours than lime or limestone.

Treatment of Simulated Acid Mine Drainage by Permeable Reactive Barrier: Column Study

2014 ◽  
Vol 989-994 ◽  
pp. 966-969
Author(s):  
Chang Feng Cai ◽  
Fu Zhang Qi ◽  
Xiao Liang Lin ◽  
Lin Jiang
Keyword(s):  
Acid Mine Drainage ◽  
Metal Ions ◽  
Removal Efficiency ◽  
Mine Drainage ◽  
Permeable Reactive Barrier ◽  
Inlet Velocity ◽  
Reactive Barrier ◽  
Treatment Performance ◽  
Acid Mine ◽  
Reactive Media

Three polyvinyl chloride (PVC) columns filled with different ratios of reactive media, ceramsite and corncob, were conducted to assess the treatment performance of simulated acid mine drainage (AMD). The results indicated that the columns could effectively remove sulfate and metal ions from AMD with the removal efficiency of 57.7% and 96.5% respectively. The removal efficiency decreased with the increasing inlet velocity and at the same sample ports the sulfate and metal ions concentrations at the velocity of 1 ml/min were lower than that at the velocity of 2ml/min and 3ml/min.

scholarly journals Polymeric ion exchanger supported ferric oxide nanoparticles as adsorbents for toxic metal ions from aqueous solutions and acid mine drainage

2019 ◽  
Vol 17 (2) ◽  
pp. 719-730 ◽  
Author(s):  
Caroline Lomalungelo Dlamini ◽  
Lueta-Ann De Kock ◽  
Kebede Keterew Kefeni ◽  
Bhekie Brilliance Mamba ◽  
Titus Alfred Makudali Msagati
Keyword(s):  
Acid Mine Drainage ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Ferric Oxide ◽  
Mine Drainage ◽  
Toxic Metal ◽  
Ion Exchanger ◽  
Oxide Nanoparticles ◽  
Toxic Metal Ions ◽  
Acid Mine
Sign in / Sign up

Export Citation Format

Share Document