Rapid Immobilization of Transferable Ni in Soil by Fe78Si9B13 Amorphous Zero-Valent Iron

Fe-Si-B amorphous zero-valent iron has attracted wide attention because of its efficient remediation heavy metals and dye wastewater. In this paper, the effect powder (Fe78Si9B13AP) on Ni contaminated soil was investigated. Results show that immobilization efficiency nickel in by Fe78Si9B13AP with low content is higher than ZVI. The apparent activation energies reactions Ni2+ ions 25.31 kJ/mol. After continuing reaction for 7 days, mainly transformed into monoplasmatic (Ni0) combined (hydroxide) oxides. Microstructure investigations product layer nano-pore structure beneficial to improve activity Fe78Si9B13AP. that, a magnetic separation process introduced, which part immobilized are removed reduce total 58.21%. results simulated acid rain leaching experiment showed release after 62.89% lower before remediation.