Characterization of Oxidized Reticulated Vitreous Carbon for Generation of H2O2 from Flowing Acid Solutions

2019 ◽  
Vol 3 (28) ◽  
pp. 67-78 ◽  
Author(s):  
Mahmoud M. Saleh ◽  
Mohamed I. Awad ◽  
Takeo Ohsaka
Keyword(s):  
Vitreous Carbon ◽  
Acid Solutions ◽  
Reticulated Vitreous Carbon

Characterization of oxidized reticulated vitreous carbon electrode for oxygen reduction reaction in acid solutions

2007 ◽  
Vol 52 (9) ◽  
pp. 3095-3104 ◽  
Author(s):  
Mahmoud M. Saleh ◽  
Mohamed I. Awad ◽  
Takeoshi Okajima ◽  
Kosaku Suga ◽  
Takeo Ohsaka
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Vitreous Carbon ◽  
Carbon Electrode ◽  
Acid Solutions ◽  
Reticulated Vitreous Carbon

Reticulated Vitreous Carbon Electrode for Copper(II) Removal from Dilute Acid Solutions:  Effect of the Dissolved Oxygen

1999 ◽  
Vol 38 (4) ◽  
pp. 1400-1405 ◽  
Author(s):  
A. M. Polcaro ◽  
S. Palmas ◽  
M. Mascia ◽  
F. Renoldi ◽  
R. L. Correa dos Santos
Keyword(s):  
Dissolved Oxygen ◽  
Vitreous Carbon ◽  
Carbon Electrode ◽  
Acid Solutions ◽  
Dilute Acid ◽  
Reticulated Vitreous Carbon

scholarly journals Recent advances on modified reticulated vitreous carbon for water and wastewater treatment – A mini-review

Chemosphere ◽  
2021 ◽  
pp. 131573
Author(s):  
Vanessa M. Vasconcelos ◽  
Géssica O.S. Santos ◽  
Katlin I.B. Eguiluz ◽  
Giancarlo R. Salazar-Banda ◽  
Iara de Fatima Gimenez
Keyword(s):  
Wastewater Treatment ◽  
Vitreous Carbon ◽  
Reticulated Vitreous Carbon ◽  
Water And Wastewater Treatment ◽  
Recent Advances ◽  
Water And Wastewater

scholarly journals Synthesis of a New Phosphonate-Based Sorbent and Characterization of Its Interactions with Lanthanum (III) and Terbium (III)

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1513
Author(s):  
Yuezhou Wei ◽  
Khalid A. M. Salih ◽  
Mohammed F. Hamza ◽  
Toyohisa Fujita ◽  
Enrique Rodríguez-Castellón ◽  
...  
Keyword(s):  
High Tech ◽  
Low Grade ◽  
Acid Solutions ◽  
Hydrogel Beads ◽  
Secondary Sources ◽  
Composite Sorbents ◽  
Synthesis Procedure ◽  
New Generation ◽  
Mild Acid

High-tech applications require increasing amounts of rare earth elements (REE). Their recovery from low-grade minerals and their recycling from secondary sources (as waste materials) are of critical importance. There is increasing attention paid to the development of new sorbents for REE recovery from dilute solutions. A new generation of composite sorbents based on brown algal biomass (alginate) and polyethylenimine (PEI) was recently developed (ALPEI hydrogel beads). The phosphorylation of the beads strongly improves the affinity of the sorbents for REEs (such as La and Tb): by 4.5 to 6.9 times compared with raw beads. The synthesis procedure (epicholorhydrin-activation, phosphorylation and de-esterification) is investigated by XPS and FTIR for characterizing the grafting route but also for interpreting the binding mechanism (contribution of N-bearing from PEI, O-bearing from alginate and P-bearing groups). Metal ions can be readily eluted using an acidic calcium chloride solution, which regenerates the sorbent: the FTIR spectra are hardly changed after five successive cycles of sorption and desorption. The materials are also characterized by elemental, textural and thermogravimetric analyses. The phosphorylation of ALPEI beads by this new method opens promising perspectives for the recovery of these strategic metals from mild acid solutions (i.e., pH ~ 4).

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