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http://dx.doi.org/10.7844/kirr.2020.29.6.41

The Study on the Removal Process of Heavy Metals from Mine Drainage Using Coal Bottom Ash  

Kim, Hye Rim (Technology planning team, Korea Resources Corporation)
Lee, Jung Mi (Technology planning team, Korea Resources Corporation)
Han, In Kyu (Technology planning team, Korea Resources Corporation)
Publication Information
Resources Recycling / v.29, no.6, 2020 , pp. 41-47 More about this Journal
Abstract
This study was carried out to utilize the coal bottom ash generated in a circulating fluidized bed combustion boiler as a treatment agent for heavy metal ions, and experiments were conducted to remove heavy metal ions from the acid mine drainage. The batch experiments were conducted to investigate the influence of dosage of ash, initial concentration of solution on the removal capacity of heavy metal ions (Cu, Cd, Cr, Pb). The results of the experiment showed that the total removal capacity of heavy metals was 30.8 mg/L and 46.4 mg/g, respectively, under the condition that the concentration of coal ash was added as 15 g/L of heavy materials and 10 g/L of light materials. After that, a long-term column experiment was performed to determine the maximum removal capacity of heavy metal ions (Cu, Cd, Cr, Pb, As), and the removal capacity for each metal component was investigated. After approximately 60 days of operation, the maximum removal capacity of heavy metals was 23.6 mg/g at pH 9.25.
Keywords
coal ash; acid mine drainage; heavy metals; removal;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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