کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6477451 | 1362584 | 2017 | 8 صفحه PDF | دانلود رایگان |
- Iron oxides nanoparticles recovered from acid mine drainage remove contaminants from water.
- Arsenate, phosphate and humic acids are efficiently removed from aqueous phase using acicular goethite nanoparticles.
- The adsorption capacity on acicular goethite nanoparticles decreases : humic acids > arsenate > phosphate.
Acicular goethite nanoparticles (AGNs), obtained from the active treatment of acid mine drainage (AMD) on an industrial scale, were evaluated with respect to their capacity to adsorb the contaminants arsenate, phosphate and humic acids (HAs) in aqueous solution. Kinetics and equilibrium constants that describe the adsorption process were investigated. The adsorption capacity decreased in the order: HAs (37 mgC gâ1) > As(V) (20 mg As(V) gâ1) > phosphate ions (13 mgPO43â gâ1). The adsorption capacity of the AGNs produced from acid mine drainage to remove arsenate, phosphate or humic acids are similar to those found for other synthetic iron oxides produced under controlled conditions at the laboratory scale. This study demonstrates the valorization of the AGNs product derived from acid mine drainage slurry waste arising from the mining of coal as an effective adsorbent materials for water treatment.
Journal: Journal of Environmental Chemical Engineering - Volume 5, Issue 1, February 2017, Pages 652-659