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

Metals

Francisco J. Alguacil¹  EstherEscudero Baquero¹  OlgaRodríguez Largo¹  Félix A. López¹  Irene García-Díaz¹ 

[1] National Center for Metallurgical Research (CENIM). Spanish National Research Council (CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain;

关键词: lanthanum;    multiwalled carbon nanotubes;    adsorption;    recovery;   

DOI  :  10.3390/met10060765

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown