Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Synthesis of Zero‐Valent Iron Nanoparticles Via Electrical Wire Explosion for Efficient Removal of Heavy Metals
In this paper, electrical wire explosion (EWE) was used as a simple, clean, in situ method to synthesise nano zero‐valent iron (nZVI) particles in liquid mediums. The structural and physical properties of the synthesised nZVI particles were characterised by x‐ray diffraction, Brunauer–Emmett–Teller analysis, field emission scanning electron microscopy and transmission electron microscopy. The synthesised spherical nanoparticles, at a specific size of 10–50 nm, possessed large surface areas of approximately 13.27 m2/g, reinforcing the significant advantages of EWE, that is, less aggregation and in situ production of nanoparticles with enhanced removal efficacy, for groundwater treatment. After 1 h the adsorption capacity for Cr(VI), Ni(II), and Cd(II) (Q60 = Cions/Ciron(mg/g)) at pH 4 was approximately 143.4 (89.0%), 137.5 (79.0%), and 132.6 mg/g (72.0%), respectively. The effect of temperature was also examined at initial metal ions concentration of 70 mg/L, nZVI dosage of 0.2 g/L and pH 4. The results showed 45°C was the optimum temperature for adsorption of Cr(VI), Ni(II), and Cd(II) ions, and over a 60‐min period at this temperature adsorption capacity increased to 153.56 (95.3%), 158.91 (91.3%), and 163.90 mg/g (89.0%), respectively.
Synthesis of Zero‐Valent Iron Nanoparticles Via Electrical Wire Explosion for Efficient Removal of Heavy Metals
In this paper, electrical wire explosion (EWE) was used as a simple, clean, in situ method to synthesise nano zero‐valent iron (nZVI) particles in liquid mediums. The structural and physical properties of the synthesised nZVI particles were characterised by x‐ray diffraction, Brunauer–Emmett–Teller analysis, field emission scanning electron microscopy and transmission electron microscopy. The synthesised spherical nanoparticles, at a specific size of 10–50 nm, possessed large surface areas of approximately 13.27 m2/g, reinforcing the significant advantages of EWE, that is, less aggregation and in situ production of nanoparticles with enhanced removal efficacy, for groundwater treatment. After 1 h the adsorption capacity for Cr(VI), Ni(II), and Cd(II) (Q60 = Cions/Ciron(mg/g)) at pH 4 was approximately 143.4 (89.0%), 137.5 (79.0%), and 132.6 mg/g (72.0%), respectively. The effect of temperature was also examined at initial metal ions concentration of 70 mg/L, nZVI dosage of 0.2 g/L and pH 4. The results showed 45°C was the optimum temperature for adsorption of Cr(VI), Ni(II), and Cd(II) ions, and over a 60‐min period at this temperature adsorption capacity increased to 153.56 (95.3%), 158.91 (91.3%), and 163.90 mg/g (89.0%), respectively.
Synthesis of Zero‐Valent Iron Nanoparticles Via Electrical Wire Explosion for Efficient Removal of Heavy Metals
CLEAN Soil Air Water
Seyedi, Seyed Mojtaba (Autor:in) / Rabiee, Hesamoddin (Autor:in) / Shahabadi, Seyed Mahdi Seyed (Autor:in) / Borghei, Seyed Mehdi (Autor:in)
01.03.2017
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Zero-valent iron nanoparticles preparation
| British Library Online Contents | 2012
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| British Library Online Contents | 2000