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A NOVEL METHOD OF USING IRON NANOPARTICLES FROM COAL FLY ASH OR FERRIC CHLORIDE FOR ACID MINE DRAINAGE REMEDIATION
Gilbert, C., O.S. Ayanda, O.O. Fatoba, G. Madzivire, and L.F. Petrik.
Mine Water and the Environment 38(3):617-631(2019)
Iron nanoparticles (nano Fe) were extracted from coal fly ash (CFA) or ferric chloride (FeCl3) and used to remediate acid mine drainage (AMD). Characterization using various analytical techniques indicated good dispersion of the nano Fe, which was mainly in the zero-valent oxidation state. The Braunaer-Emmet-Teller surface areas of the CFA and FeCl3 were measured at 34.7 and 88.8 m2/g, respectively. Nano Fe decreased contaminant levels by 17-99%. The pH of the AMD increased from 3.49 to 5.74 (CFA) and 6.01 (FeCl3), the electrical conductivity decreased from 0.57 Ω/m to 0.18 (CFA) and 0.13 Ω/m (FeCl3), while the total dissolved solids decreased from from 1,683 mg/L to 447 (CFA) and 384 mg/L(FeCl3).
Mine Water and the Environment 38(3):617-631(2019)
Iron nanoparticles (nano Fe) were extracted from coal fly ash (CFA) or ferric chloride (FeCl3) and used to remediate acid mine drainage (AMD). Characterization using various analytical techniques indicated good dispersion of the nano Fe, which was mainly in the zero-valent oxidation state. The Braunaer-Emmet-Teller surface areas of the CFA and FeCl3 were measured at 34.7 and 88.8 m2/g, respectively. Nano Fe decreased contaminant levels by 17-99%. The pH of the AMD increased from 3.49 to 5.74 (CFA) and 6.01 (FeCl3), the electrical conductivity decreased from 0.57 Ω/m to 0.18 (CFA) and 0.13 Ω/m (FeCl3), while the total dissolved solids decreased from from 1,683 mg/L to 447 (CFA) and 384 mg/L(FeCl3).
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