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|Title:||Efficacies of pervious concrete and zero-valent iron as reactive media for treating acid mine drainage.||Authors:||Shabalala, Ayanda.
School of Biology and Environmental Sciences
|Keywords:||Removal mechanisms.;Pervious concrete.;Acid mine drainage.;Batch reactor test.;Zero-valent iron.||Issue Date:||2020||Publisher:||International Mine Water Association||Abstract:||Batch reactor tests using pervious concrete (PervC) made at 0.27 water/cement ratio by mixing granite aggregate and Portland cement CEM I 52.5 R were performed to compare the use of PervC versus zero-valent iron (ZVI) for treatment of Acid Mine Drainage(AMD). The removal rates for Ca, Mg, Al, Fe, Mn, SO4 and Cu were greater for AMD samples that were treated with PervC reactive media relative to those treated with ZVI. The pH-driven metal precipitation and adsorption of precipitates onto the surface of PervC and gypsum by-product are the main mechanisms of removal of metals from AMD.||URI:||https://openscholar.ump.ac.za/handle/20.500.12714/536|
|Appears in Collections:||Conference Proceeding(s)|
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