scholarly journals Adsorption of phenol from aqueous solutions on original and oxidized multiwalled carbon nanotubes

2017 ◽  
Vol 35 (9-10) ◽  
pp. 806-816 ◽  
Author(s):  
Przemysław Podkościelny ◽  
Andrzej Dąbrowski
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solutions ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Oxidized Multiwalled Carbon Nanotubes

scholarly journals Oxidized and Non-Oxidized Multiwalled Carbon Nanotubes as Materials for Adsorption of Lanthanum(III) Aqueous Solutions

2020 ◽  
Author(s):  
Francisco J. Alguacil ◽  
Irene García-Díaz ◽  
Esther Escudero Baquero ◽  
Olga Rodríguez Largo ◽  
Félix Antonio López
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solutions ◽  
Multiwalled Carbon Nanotubes ◽  
Metal Uptake ◽  
Isotherm Models ◽  
Particle Diffusion ◽  
Acid Solutions ◽  
Multiwalled Carbon ◽  
Several Variables ◽  
Oxidized Multiwalled Carbon Nanotubes

The behaviour of oxidized and non-oxidized multiwalled carbon nanotubes in the adsorption of lanthanum(III) from aqueous solutions is described. Metal uptake is studied as a function of several variables such as the stirring speed of the system, pH of the aqueous solution and metal and nanomaterial concentrations. The experimental results are fitted to various kinetics and isotherm models, being the rate law fitted to the film diffusion and particle diffusion models, when the non-oxidized and the oxidized nanomaterials are used to remove lanthanum from the solution, respectively. Sulphuric acid solutions seem to be appropriate to recover the metal from La-loaded nanomaterials.

scholarly journals Oxidized and Non-Oxidized Multiwalled Carbon Nanotubes as Materials for Adsorption of Lanthanum(III) Aqueous Solutions

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 765 ◽  
Author(s):  
Francisco J. Alguacil ◽  
Irene García-Díaz ◽  
Esther Escudero Baquero ◽  
Olga Rodríguez Largo ◽  
Félix A. López
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solutions ◽  
Multiwalled Carbon Nanotubes ◽  
Metal Uptake ◽  
Isotherm Models ◽  
Particle Diffusion ◽  
Multiwalled Carbon ◽  
Several Variables ◽  
Sulfuric Acid Solutions ◽  
Oxidized Multiwalled Carbon Nanotubes

The behavior of oxidized and non-oxidized multiwalled carbon nanotubes (MWCNTs) in the adsorption of lanthanum(III) from aqueous solutions is described. Metal uptake is studied as a function of several variables such as the stirring speed of the system, pH of the aqueous solution and metal and nanomaterial concentrations. The experimental results are fitted to various kinetic and isotherm models, the rate law being fitted to the film diffusion and particle diffusion models, when the non-oxidized and the oxidized nanomaterials are used to remove lanthanum from the solution, respectively. Sulfuric acid solutions seem to be appropriate to recover the metal from La-loaded nanomaterials.

Sorption of Bisphenol A in Aqueous Solutions on Irradiated and as-Grown Multiwalled Carbon Nanotubes

2018 ◽  
Vol 69 (5) ◽  
pp. 1233-1239
Author(s):  
Raluca Madalina Senin ◽  
Ion Ion ◽  
Ovidiu Oprea ◽  
Rusandica Stoica ◽  
Rodica Ganea ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Multiwalled Carbon Nanotubes ◽  
Adsorption Process ◽  
Sorption Process ◽  
Multiwalled Carbon ◽  
Before And After ◽  
Kinetic Sorption

In this study, non-irradiated and weathered multiwalled carbon nanotubes (MWCNTs) obtained through irradiation, were studied as adsorbents for BPA, both nanomaterials being characterized before and after the adsorption process. The objectives of our investigation were to compare the characteristics of non-irradiated and irradiated MWCNTs, to evaluate the adsorption capacity of BPA by pristine and irradiated MWCNTs and to determine the variation of the kinetic, sorption and thermodynamic parameters during sorption process using both sorbents.

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