Trace Key Mechanistic Features of the Arsenite Sequestration Reaction with Nanoscale Zerovalent Iron

2021 ◽  
Vol 143 (40) ◽  
pp. 16538-16548
Author(s):  
Li Cheng Kao ◽  
Yang Ha ◽  
Wan-Jou Chang ◽  
Xuefei Feng ◽  
Yifan Ye ◽  
...  
Keyword(s):  
Zerovalent Iron ◽  
Nanoscale Zerovalent Iron

scholarly journals Removal of hexavalent chromium from wastewater by Cu/Fe bimetallic nanoparticles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jien Ye ◽  
Yi Wang ◽  
Qiao Xu ◽  
Hanxin Wu ◽  
Jianhao Tong ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Removal Efficiency ◽  
Photoelectron Spectroscopy ◽  
Bimetallic Nanoparticles ◽  
Chemical Reduction ◽  
Particle Surface ◽  
Zerovalent Iron ◽  
Order Model ◽  
X Ray ◽  
Nanoscale Zerovalent Iron

AbstractPassivation of nanoscale zerovalent iron hinders its efficiency in water treatment, and loading another catalytic metal has been found to improve the efficiency significantly. In this study, Cu/Fe bimetallic nanoparticles were prepared by liquid-phase chemical reduction for removal of hexavalent chromium (Cr(VI)) from wastewater. Synthesized bimetallic nanoparticles were characterized by transmission electron microscopy, Brunauer–Emmet–Teller isotherm, and X-ray diffraction. The results showed that Cu loading can significantly enhance the removal efficiency of Cr(VI) by 29.3% to 84.0%, and the optimal Cu loading rate was 3% (wt%). The removal efficiency decreased with increasing initial pH and Cr(VI) concentration. The removal of Cr(VI) was better fitted by pseudo-second-order model than pseudo-first-order model. Thermodynamic analysis revealed that the Cr(VI) removal was spontaneous and endothermic, and the increase of reaction temperature facilitated the process. X-ray photoelectron spectroscopy (XPS) analysis indicated that Cr(VI) was completely reduced to Cr(III) and precipitated on the particle surface as hydroxylated Cr(OH)3 and CrxFe1−x(OH)3 coprecipitation. Our work could be beneficial for the application of iron-based nanomaterials in remediation of wastewater.

scholarly journals Effects of nitrate on the treatment of lead contaminated groundwater by nanoscale zerovalent iron

2014 ◽  
Vol 280 ◽  
pp. 504-513 ◽  
Author(s):  
Yiming Su ◽  
Adeyemi S. Adeleye ◽  
Xuefei Zhou ◽  
Chaomeng Dai ◽  
Weixian Zhang ◽  
...  
Keyword(s):  
Zerovalent Iron ◽  
Contaminated Groundwater ◽  
Nanoscale Zerovalent Iron

In vitro biocompatibility of nanoscale zerovalent iron particles (NZVI) synthesized using tea polyphenols

2010 ◽  
Vol 12 (1) ◽  
pp. 114-122 ◽  
Author(s):  
Mallikarjuna N. Nadagouda ◽  
Alicia B. Castle ◽  
Richard C. Murdock ◽  
Saber M. Hussain ◽  
Rajender S. Varma
Keyword(s):  
Tea Polyphenols ◽  
Zerovalent Iron ◽  
Iron Particles ◽  
Nanoscale Zerovalent Iron ◽  
In Vitro Biocompatibility

Removal of Lead by Nanoscale Zerovalent Iron in Surfacewater

InCIEC 2015 ◽  
2016 ◽  
pp. 63-71 ◽  
Author(s):  
Raja Hafizzuddin Raja Amir Iskandar ◽  
Jalina Kassim ◽  
Mohd Fozi Ali ◽  
Amnorzahira Amir
Keyword(s):  
Zerovalent Iron ◽  
Nanoscale Zerovalent Iron

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

ChemSusChem ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3288-3305 ◽  
Author(s):  
Yukti Monga ◽  
Pawan Kumar ◽  
Rakesh K. Sharma ◽  
Jan Filip ◽  
Rajender S. Varma ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Zerovalent Iron ◽  
Iron Particles ◽  
Nanoscale Zerovalent Iron

Nanoscale Zerovalent Iron Particles for Treatment of Metalloids

2019 ◽  
pp. 157-199
Author(s):  
Jan Filip ◽  
Jan Kolařík ◽  
Eleni Petala ◽  
Martin Petr ◽  
Ondřej Šráček ◽  
...  
Keyword(s):  
Zerovalent Iron ◽  
Iron Particles ◽  
Nanoscale Zerovalent Iron
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