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.

Removal of Methyl Orange from Aqueous Solutions by Using Zn-Al Layered Double Hydroxide as Photocatalyst

2015 ◽  
Vol 1 (2) ◽  
pp. 36-41
Author(s):  
Laura Cocheci ◽  
◽  
Ancuta-Corina Marcu ◽  
Paul Barvinschi ◽  
Aniela Pop
Keyword(s):  
Methyl Orange ◽  
Aqueous Solutions ◽  
Layered Double Hydroxide ◽  
Double Hydroxide

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

Highly efficient carbonaceous nanofiber/layered double hydroxide nanocomposites for removal of U(VI) from aqueous solutions

2019 ◽  
Vol 107 (4) ◽  
pp. 299-309
Author(s):  
Shuqi Yu ◽  
Xiangxue Wang ◽  
Shunyan Ning ◽  
Zhongshan Chen ◽  
Xiangke Wang
Keyword(s):  
Ionic Strength ◽  
Aqueous Solutions ◽  
Layered Double Hydroxide ◽  
Photoelectron Spectroscopy ◽  
Environmental Remediation ◽  
Three Dimensional ◽  
Order Kinetic ◽  
Surface Bonding ◽  
Double Hydroxide ◽  
Shed Light

Abstract The three-dimensional (3D) carbonaceous nanofiber and Ni-Al layered double hydroxide (CNF/LDH) nanocomposite was successfully prepared by a facile one-step hydrothermal methodology. Characterization of scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), XRD, and Fourier transformed infrared spectroscopy (FTIR) provided a demonstration that the modified CNF/LDH nanocomposite possessed abundant functional groups, for instance, metal-oxygen surface bonding sites (Ni–O as well as Al–O) and free-metal surface bonding sites (C–O, C–O–C, as well as O–C=O). The elimination of representative radionuclide (i.e. U(VI)) on the CNF/LDH nanocomposite from aqueous solutions was explored as a key function of pH, ionic strength, contact time, reaction temperature as well as radionuclide preliminary concentrations with the use of the batch methodology. As revealed by the findings, the sorption of radionuclides on CNF/LDH nanocomposite adhered to the pseudo-second-order kinetic model as well as Langmuir model. The maximum elimination capacity of U(VI) amounted to be 0.7 mmol/g. The independent of ionic strength shed light on the fact that inner-sphere surface complexation mainly overpowered radionuclide uptake by the CNF/LDH nanocomposite, which was further verified through the combination of FTIR and XPS spectral analyses. The abovementioned analyses shed light on the fact that the CNF/LDH nanocomposite can be regarded as a latent material to preconcentration radionuclides for environmental remediation.

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
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