Comparison of aluminum and iron nanoparticles for chromium removal from aqueous solutions and tannery wastewater, empirical modeling and prediction

2021 ◽  
Author(s):  
M. S. Mahmoud ◽  
Ahmed S. Mahmoud ◽  
Mohamed Ali El-Said ◽  
Mohamed K. Mostafa
Keyword(s):  
Aqueous Solutions ◽  
Iron Nanoparticles ◽  
Empirical Modeling ◽  
Tannery Wastewater ◽  
Chromium Removal ◽  
Modeling And Prediction

Hexavalent chromium removal from aqueous solutions using biogenic iron nanoparticles: Kinetics and equilibrium study

2021 ◽  
pp. 112477
Author(s):  
P. Prema ◽  
Van-Huy Nguyen ◽  
Karthikeyan Venkatachalam ◽  
J.M. Murugan ◽  
Hayssam M. Ali ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Iron Nanoparticles ◽  
Chromium Removal ◽  
Equilibrium Study ◽  
Biogenic Iron

Chromium removal from aqueous solutions using new silica gel conjugates of desferrioxamine or diethylenetriaminepentaacetic acid

2020 ◽  
Vol 27 (13) ◽  
pp. 15635-15644
Author(s):  
Aamir Rasheed ◽  
Alexandrina Aparecida Costa Carvalho ◽  
Gabriel Gustinelli Arantes de Carvalho ◽  
Tahseen Ghous ◽  
Cassiana Seimi Nomura ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Silica Gel ◽  
Chromium Removal ◽  
Diethylenetriaminepentaacetic Acid

Efficient heavy metal ion removal by triazinyl-β-cyclodextrin functionalized iron nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90602-90608 ◽  
Author(s):  
Amir Abdolmaleki ◽  
Shadpour Mallakpour ◽  
Sedigheh Borandeh
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ion ◽  
Iron Nanoparticles ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Heavy Metal Ion Removal ◽  
Nano Adsorbent

A novel magnetic nano-adsorbent containing Fe3O4 nanoparticles functionalized with MCT-β-CD was fabricated and exhibited a remarkable enhancement in heavy metal removal efficiency from aqueous solutions.

scholarly journals Nitrate Removal from Aqueous Solutions using Green and Biodegradable Zerovalent Iron Nanoparticles

2019 ◽  
Vol 6 (3) ◽  
pp. 311-325
Author(s):  
Mohammad Taghi Kouhiyan Afzal ◽  
Ahmad Farrokhian Firouzi ◽  
Mehdi Taghavi Zahedkolaei ◽  
◽  
◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Iron Nanoparticles ◽  
Nitrate Removal ◽  
Zerovalent Iron ◽  
Zerovalent Iron Nanoparticles

scholarly journals Nanoparticle Beads of Chitosan-Ethylene Glycol Diglycidyl Ether/Fe for the Removal of Aldrin

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
G. García Rosales ◽  
P. Ávila-Pérez ◽  
J.O. Reza-García ◽  
A. Cabral-Prieto ◽  
E.O. Pérez-Gómez
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solutions ◽  
Iron Nanoparticles ◽  
Sorption Process ◽  
Diglycidyl Ether ◽  
Maximum Adsorption Capacity ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Chitosan Beads ◽  
Transmission Electron

This article reports on the preparation of iron nanoparticles (FeNPs) supported in chitosan beads (Chi-EDGE-Fe) for removing aldrin from aqueous solutions. The FeNPs and Chi-EDGE-Fe beads were characterized by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and the Mössbauer spectroscopy (MS) techniques. TEM, XRD, and MS showed that the FeNPs had core-shell structures consisting of a core of either Fe0 or Fe2B and a shell of magnetite. Furthermore, SEM images showed that Chi-EDGE-Fe beads were spherical with irregular surfaces and certain degrees of roughness and porosity, whilst the sorbent mean pore size was 204 nm, and the occluded iron nanoparticles in the chitosan material had diameters of 70 nm and formed agglomerates. The sorbent beads consisted of carbon, oxygen, chlorine, aluminum, silicon, and iron according to the SEM-EDS analysis. Functional groups such as O-H, C-H, -CH2, N-H, C-O, C-OH, and Fe-OH were detected in the FTIR spectra. In addition, a characteristic band appeared at about 1700 cm−1 after the sorption process involving aldrin. MS also showed that the iron nanoparticles in the beads probably oxidized into NPs of α-Fe2O3 as a result of the supporting process. The isotherm of the aldrin removal followed the Langmuir–Freundlich model and presented a maximum adsorption capacity of 74.84 mg/g, demonstrating that chitosan-Fe beads are promising sorbents for the removal of toxic pollutants in aqueous solutions.

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