Magnetite and cobalt ferrite nanoparticles used as seeds for acid mine drainage treatment

被引：36
|
作者：
Kefeni, Kebede K. [1 ]
Mamba, Bhekie B. [1 ]
Msagati, Titus A. M. [1 ]
机构：
[1] Univ South Africa, Coll Sci Engn & Technol, Nanotechnol & Water Sustainabil Res Unit, Florida Sci Campus, ZA-1710 Pretoria, South Africa
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2017年 / 333卷
关键词：
Magnetic nanoparticles; Acid mine drainage; Magnetite; Cobalt ferrite; IRON-OXIDE NANOPARTICLES; HEAVY-METALS; WASTE-WATER; ADSORPTION CAPABILITY; EFFICIENT REMOVAL; AQUEOUS-PHASE; CONGO RED; RECOVERY; COFE2O4; ADSORBENT;
D O I：
10.1016/j.jhazmat.2017.03.054
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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 degrees C was treated under continuous stirring for 1 h. 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. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：308 / 318
页数：11
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