@Article{jrm.2022.016961,
AUTHOR = {Liefei Pei, Xiangyun Zhang, Zizhou Yuan},
TITLE = {Rapid Immobilization of Transferable Ni in Soil by Fe<sub>78</sub>Si<sub>9</sub>B<sub>13</sub> Amorphous Zero-Valent Iron},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {10},
YEAR = {2022},
NUMBER = {4},
PAGES = {955--968},
URL = {http://www.techscience.com/jrm/v10n4/45340},
ISSN = {2164-6341},
ABSTRACT = {Fe-Si-B amorphous zero-valent iron has attracted wide attention because of its efficient remediation of heavy metals and dye wastewater. In this paper, the remediation effect of amorphous zero-valent iron powder (Fe<sub>78</sub>Si<sub>9</sub>B<sub>13</sub><sup>AP</sup>) on Ni contaminated soil was investigated. Results show that the immobilization efficiency of nickel in soil by Fe<sub>78</sub>Si<sub>9</sub>B<sub>13</sub><sup>AP</sup> with low iron content is higher than that by ZVI. The apparent activation energies of the reactions of Fe<sub>78</sub>Si<sub>9</sub>B<sub>13</sub><sup>AP</sup> with Ni<sup>2+</sup> ions is 25.31 kJ/mol. After continuing the reaction for 7 days, Ni<sup>2+</sup> ions is mainly transformed into monoplasmatic nickel (Ni<sup>0</sup>) and nickel combined with iron (hydroxide) oxides. Microstructure investigations show that the product layer with nano-pore structure is beneficial to improve the reaction activity of Fe<sub>78</sub>Si<sub>9</sub>B<sub>13</sub><sup>AP</sup>. After that, a magnetic separation process is introduced, in which part of the immobilized Ni are removed to reduce the total Ni content in soil by 58.21%. The results of simulated acid rain leaching experiment showed that the release of Ni in the soil after Fe<sub>78</sub>Si<sub>9</sub>B<sub>13</sub><sup>AP</sup> remediation is 62.89% lower than that before remediation.},
DOI = {10.32604/jrm.2022.016961}
}