scholarly journals Enrichment of Uranium from Aqueous Solutions with Nanoscale Zero-valent Iron: Surface Chemistry and Application Prospect

2021 ◽  
Vol 79 (8) ◽  
pp. 1008
Author(s):  
Yilong Hua ◽  
Donghan Li ◽  
Tianhang Gu ◽  
Wei Wang ◽  
Ruofan Li ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Aqueous Solutions ◽  
Zero Valent Iron ◽  
Iron Surface ◽  
Nanoscale Zero Valent Iron

Removal of Ni(II) from aqueous solutions by sulfide-modified nanoscale zero-valent iron supported by hydroxyapatite(HAP/S-nZVI)

2021 ◽  
Vol 232 ◽  
pp. 149-164
Author(s):  
Hui Xu ◽  
Minzhang Chen ◽  
Yajuan Zhang ◽  
Pengdong Chen ◽  
Yong Chen
Keyword(s):  
Aqueous Solutions ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron

scholarly journals Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron

2020 ◽  
Vol 7 (4) ◽  
pp. 045002
Author(s):  
Shang-Qun Li ◽  
Chuang Yu ◽  
Ze-Xiang Wu ◽  
Xiao-Qing Cai ◽  
Fu-Sheng Zha
Keyword(s):  
Particle Size ◽  
Aqueous Solutions ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron

scholarly journals Highly efficient and rapid removal of arsenic(iii) from aqueous solutions by nanoscale zero-valent iron supported on a zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF)

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39475-39487 ◽  
Author(s):  
Tingyi Liu ◽  
Zhengchao Zhang ◽  
Zhaohui Wang ◽  
Zhong-Liang Wang ◽  
Richard Bush
Keyword(s):  
Aqueous Solutions ◽  
Metal Organic Framework ◽  
Zero Valent Iron ◽  
Highly Efficient ◽  
Nanoscale Zero Valent Iron ◽  
Metal Organic ◽  
Rapid Removal ◽  
Removal Of Arsenic ◽  
Organic Framework

A zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF) was successfully used as a template to enhance the distribution and activity of nanoscale zero-valent iron (NZVI).

Chemical pathways of Nanoscale Zero-Valent Iron (NZVI) during its transformation in aqueous solutions

2018 ◽  
Vol 6 (5) ◽  
pp. 6207-6220 ◽  
Author(s):  
Osama Eljamal ◽  
Relebohile Mokete ◽  
Nobuhiro Matsunaga ◽  
Yuji Sugihara
Keyword(s):  
Aqueous Solutions ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron

Toxicity of sulfide-modified nanoscale zero-valent iron to Escherichia coli in aqueous solutions

Chemosphere ◽  
2019 ◽  
Vol 220 ◽  
pp. 523-530 ◽  
Author(s):  
Yujun Cheng ◽  
Haoran Dong ◽  
Yue Lu ◽  
Kunjie Hou ◽  
Yaoyao Wang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Aqueous Solutions ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron

Nanoscale zero-valent iron for the removal of Zn2+, Zn(II)–EDTA and Zn(II)–citrate from aqueous solutions

2014 ◽  
Vol 476-477 ◽  
pp. 20-28 ◽  
Author(s):  
Nina Kržišnik ◽  
Ana Mladenovič ◽  
Andrijana Sever Škapin ◽  
Luka Škrlep ◽  
Janez Ščančar ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron

Macroscopic and microscopic investigation of uranium elimination by Ca–Mg–Al-layered double hydroxide supported nanoscale zero valent iron

2018 ◽  
Vol 5 (10) ◽  
pp. 2657-2665 ◽  
Author(s):  
Hongwei Pang ◽  
Yihan Wu ◽  
Shuyi Huang ◽  
Congcong Ding ◽  
Shun Li ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Layered Double Hydroxide ◽  
Microscopic Investigation ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron ◽  
Double Hydroxide

Ca–Mg–Al-LDH/nZVI nanocomposites showed excellent U(vi) removal performance from aqueous solutions through the coordination of reduction and adsorption reactions.

scholarly journals Hydrothermal Enhanced Nanoscale Zero-Valent Iron Activated Peroxydisulfate Oxidation of Chloramphenicol in Aqueous Solutions: Fe-Speciation Analysis and Modeling Optimization

Water ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 131 ◽  
Author(s):  
Lie Yang ◽  
Hong Li ◽  
Jianming Xue ◽  
Liuyang He ◽  
Yongfei Ma ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
Speciation Analysis ◽  
Zero Valent Iron ◽  
Quadratic Model ◽  
X Ray ◽  
Condition Optimization ◽  
Degradation Rates ◽  
Nanoscale Zero Valent Iron ◽  
Initial Ph

The efficiencies of the nanoscale zero-valent iron (nZVI) and hydrothermal and nZVI-heat activation of peroxydisulfate (PS) were studied for the decomposition of chloramphenicol (CAP) in aqueous solutions. The nZVI heat combined with activation of PS provided a significant synergistic effect. A central composite design (CCD) with response surface methodology (RSM) was employed to explore the influences of single parameter and interactions of selected variables (initial pH, PS concentration, nZVI and temperature) on degradation rates with the purpose of condition optimization. A quadratic model was established based on the experimental results with excellent correlation coefficients of 0.9908 and 0.9823 for R2 and R2adj. The optimized experimental condition for 97.12% CAP removal was predicted with the quadratic model as 15 mg/L, 0.5 mmol/L, 7.08 and 70 °C for nZVI dosage, PS, initial pH, and temperature, respectively. This study demonstrated the effectiveness of RSM for the modeling and prediction of CAP removal processes. In the optimal condition, Fe2O3 and Fe3O4 were the predominant solid products after reactions based on X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis, which could also act as the activators along with the reaction. Overall, it could be concluded that hydrothermal enhanced nZVI activation of PS was a promising and efficient choice for CAP degradation.

scholarly journals Nanoscale Zero-Valent Iron and Chitosan Functionalized Eichhornia crassipes Biochar for Efficient Hexavalent Chromium Removal

2019 ◽  
Vol 16 (17) ◽  
pp. 3046 ◽  
Author(s):  
Xue-Li Chen ◽  
Feng Li ◽  
Xiao Jie Xie ◽  
Zhi Li ◽  
Long Chen
Keyword(s):  
Aqueous Solutions ◽  
Sorption Capacity ◽  
Hexavalent Chromium ◽  
Electrostatic Interactions ◽  
Eichhornia Crassipes ◽  
Ph Value ◽  
Zero Valent Iron ◽  
River Channels ◽  
Environmental Treatment ◽  
Nanoscale Zero Valent Iron

Sorption is widely used for the removal of toxic heavy metals such as hexavalent chromium (Cr(VI)) from aqueous solutions. Green sorbents prepared from biomass are attractive, because they leverage the value of waste biomass and reduce the overall cost of water treatment. In this study, we fabricated biochar (BC) adsorbent from the biomass of water hyacinth (Eichhornia crassipes), an invasive species in many river channels. Pristine BC was further modified with nanoscale zero-valent iron (nZVI) and stabilized with chitosan (C) to form C–nZVI–BC. C–nZVI–BC adsorbent showed high hexavalent chromium sorption capacity (82.2 mg/g) at pH 2 and removed 97.34% of 50 mg/L Cr(VI) from aqueous solutions. The sorption capacity of chitosan–nZVI-modified biochar decreased while increasing the solution pH value and ionic strength. The results of a sorption test indicated that multiple mechanisms accounted for Cr(VI) removal by C–nZVI–BC, including complexation, precipitation, electrostatic interactions, and reduction. Our study suggests a way of adding value to biomass waste by considering environmental treatment purposes.

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