title: Magnetite and cobalt ferrite nanoparticles used as seeds for acid mine drainage treatment.
abstract: In this study, magnetite and cobalt ferrite nanoparticles were used as seeds for acid mine drainage (AMD) treatment at pH of 7.05±0.35. Duplicate samples of AMD, one without heating and another with heating at 60°C was treated under continuous stirring for 1h. The filtrate analysis results from ICP-OES have shown complete removal of Al, Mg, and Mn, while for Fe, Ni and Zn over 90% removals were recorded. Particularly, settling time has significant effect on the removal of Mg, Ca and Na. The results from SQUID have shown superparamagnetic properties of the synthesised magnetic nanoparticles and ferrite sludge. The recovered nanoparticles from AMD are economically important and reduce the cost of waste disposal.
authors.affiliation: University of South Africa, College of Science, Engineering and Technology, Nanotechnology and Water Sustainability Research Unit, Florida Science Campus 1710, South Africa. Electronic address: kkefeni@gmail.com.
authors.forename: Kebede K
authors.initials: KK
authors.lastname: Kefeni
authors.affiliation: University of South Africa, College of Science, Engineering and Technology, Nanotechnology and Water Sustainability Research Unit, Florida Science Campus 1710, South Africa.
authors.forename: Bhekie B
authors.initials: BB
authors.lastname: Mamba
authors.affiliation: University of South Africa, College of Science, Engineering and Technology, Nanotechnology and Water Sustainability Research Unit, Florida Science Campus 1710, South Africa.
authors.forename: Titus A M
authors.initials: TAM
authors.lastname: Msagati
keywords: Acid mine drainage; Cobalt ferrite; Magnetic nanoparticles; Magnetite