Sorption of indium (III) onto carbon nanotubes

Alguacil, Francisco José; López, Félix A.; Largo, Olga Rodríguez; Martínez-Ramírez, S.; García‐Díaz, Irene

doi:10.1016/j.ecoenv.2016.04.008

Cited by 66 publications

(49 citation statements)

References 54 publications

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“…Other chemical used in the investigation were of AR grade, whereas the experimental procedure used here was the same as described in previous works (Alguacil, 2002;Alguacil et al, 2002;Alguacil, 2003). The multiwalled carbon nanotubes presented the characteristics described elsewhere (Alguacil et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

“…In the above experiments, the aqueous solution was 0.01 g.L -1 Cr(III) at pH 5, whereas the resin or carbon nanotubes dosages were of 0.5 g.L -1 and time 5 h. The adsorption data were used to examine their fit to the Langmuir or Freundlich models (Alguacil et al, 2016). The results of these tests show that the adsorption is best fit to the Langmuir model ( Adsorption or exchange kinetics was also evaluated.…”

Section: Metal Loading Onto the Resinmentioning

confidence: 99%

“…Furthermore, the mechanism from which chromium(III) is loaded onto the resin was evaluated using the relationships described elsewhere (Alguacil et al, 2016). Results of the experimental data fitting to the models, showed that in the 1-5 pH range, the rate law governing (best fitting) the chromium exchange within the resin is a liquidsolid phase reaction which includes diffusion of chromium(III) ion from the aqueous phase to the resin surface, and described by:…”

Section: Metal Loading Onto the Resinmentioning

confidence: 99%

“…The results of these tests show that the adsorption is best fit to the Langmuir model ( Adsorption or exchange kinetics was also evaluated. The pseudo-first and pseudo-second order rate equations (Alguacil et al, 2016) .…”

Section: Metal Loading Onto the Resinmentioning

confidence: 99%

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La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H+/Lewatit SP112

Alguacil

2017

REVMETAL

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This investigation presented results on the removal of chromium(III), from aqueous solution in the 0-5 pH range, using Lewatit SP112 cationic exchange resin. Several aspects affecting the ion exchange process were evaluated, including: the influence of the stirring speed, temperature, pH of the solution, resin dosage and aqueous ionic strength. The selectivity of the system was tested against the presence of other metals in the aqueous solution, whereas the removal of chromium(III) from solutions was compared with results obtained using multiwalled carbon nanotubes as adsorbents. From the batch experimental data, best fit of the results is obtained with the Langmuir model, whereas the ion exchange process is best explained by the pseudo-second order model, moreover, experimental data responded well to the film-diffusion controlled model. Elution of the chromium(III) loaded into the resin is well accomplished by the use of sodium hydroxide solutions. RESUMEN: La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H+ /Lewatit SP112. En este trabajo se presentan los resultados obtenidos en la eliminación de cromo(III) de disoluciones acuosas (pH 0-5) mediante la resina de intercambio catiónico Lewatit SP112. Se han investigado algunas variables que pueden afectar al sistema: influencia de la agitación, temperatura, pH y fuerza iónica del medio acuoso y cantidad de resina; también se ha investigado acerca de la selectividad del sistema cuando otros metales están presentes en el medio acuoso, comparándose los resultados de la eliminación del cromo(III) usando la resina con los resultados obtenidos cuando se emplea otro adsorbente como son los nanotubos de carbono de pared múltiple. Los resultados experimentales indican que la carga del cromo(III) en la resina responde mejor al modelo de Langmuir, mientras que los modelos cinéticos indican que la carga del metal en la resina responde al modelo de pseudo-segundo orden y difusión en la capa límite. La elución del cromo(III) se realiza con disoluciones de hidróxido sódico.

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Section: Methodsmentioning

confidence: 99%

Section: Metal Loading Onto the Resinmentioning

confidence: 99%

Section: Metal Loading Onto the Resinmentioning

confidence: 99%

Section: Metal Loading Onto the Resinmentioning

confidence: 99%

See 2 more Smart Citations

La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H+/Lewatit SP112

Alguacil

2017

REVMETAL

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“…Other chemical used in the investigation were of AR grade, whereas the experimental procedure used here was the same as described in previous works (Alguacil, 2002;Alguacil et al, 2002;Alguacil, 2003;Alguacil 2017). The multiwalled carbon nanotubes presented the characteristics described elsewhere (Alguacil et al, 2016), whereas the carboxylic functionalized multiwalled carbon nanotubes were obtained from the Aldrich catalogue, ref. 755125.…”

Section: Methodsmentioning

confidence: 99%

La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte V: níquel(II))/H+/Dowex C400

Alguacil

2017

REVMETAL

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ABSTRACT:The cationic exchange resin Dowex C400 was used to remove nickel(II) from aqueous solutions of different pH values and under various experimental conditions: stirring speed of the aqueous solution/resin system, temperature, resin dosage and aqueous ionic strength. The selectivity of the resin was investigated against the presence of various metals in the aqueous solution, and the removal of nickel(II) from aqueous solutions was also compared with results obtained using multiwalled carbon nanotubes or functionalized (carboxylic groups) multiwalled carbon nanotubes as adsorbents. According to batch experimental data, best fit of the results is obtained with the Freundlich model, whereas the ion exchange process is best explained by the pseudofirst order model. Experimental data fit well to the moving boundary controlled model. Elution of the nickel(II) loaded onto Dowex C400 resin is fully possible using acidic solutions. RESUMEN: La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico.Parte V: níquel(II))/H+/Dowex C400. Se ha empleado la resina de intercambio catiónico Dowex C400 en la eliminación de níquel(II) de disoluciones acuosas de distintos valores de pH y en varias condiciones experimentales: velocidad de agitación del sistema acuoso/resina, temperatura, dosificación de la resina y disoluciones acuosas de distinta fuerza iónica, investigándose la eliminación del níquel de medios acuosos que contenían varios metales, así como las posibilidades de la resina frente a la utilización de otros potenciales adsorbentes como son los nanotubos de carbono de pared múltiple y los nanotubos de carbono de pared múltiple funcionalizados con grupos carboxílicos. Los resultados experimentales indican que la carga del níquel(II) en la resina responde al modelo de Freundlich, mientras que los modelos cinéticos y de control indican que el proceso de intercambio catiónico responde al modelo de pseudo-primer orden y núcleo recesivo. La elución del níquel(II) se realiza con disoluciones acidas.PALABRAS CLAVE: Dowex C400; Efluentes líquidos; Eliminación; Níquel(II); Nanotubos de carbono de pared múltiple ORCID ID: Francisco J. Alguacil (http://orcid.org/0000-0002-0247-3384)

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Modification of clinoptilolite with dialkylphosphinic acid for the selective removal of cobalt (II) and nickel (II) from hydrometallurgical effluent

Kabuba

Banza

2021

Can J Chem Eng

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This study describes the selective removal of cobalt (II) and nickel (II) from hydrometallurgical effluent using modified clinoptilolite. X-ray fluorescence (XRF), x-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analysis were used to characterize the natural and modified clinoptilolites with dialkylphosphinic acid. In a batch experiment, the influence of different variables such as initial concentration, pH, particle size, clinoptilolites dosage, temperature, and contact time was evaluated. Higher removal efficiency was obtained at initial concentration of 600 mg/L, pH 6, particles size of 1000-1400 μm, dosage of 10 g/100 mL, a temperature of 25 C, and contact time of 300 minutes. The experimental data fit satisfactorily to the pseudo-second order kinetic and to the Langmuir isotherm model. Thermodynamic parameters like Gibb's free energy (ΔG o ), enthalpy (ΔH o ), and entropy (ΔS o ) were also evaluated. The results revealed that modified clinoptilolite with dialkylphosphinic acid could be successfully employed for the selective removal of cobalt (II) and nickel (II) from hydrometallurgical effluent. K E Y W O R D Sclinoptilolite, cobalt (II) and nickel (II) selective removal, dialkylphosphinic acid, ion-exchange

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Sorption of indium (III) onto carbon nanotubes

Cited by 66 publications

References 54 publications

La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H<sup>+</sup>/Lewatit SP112

La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H<sup>+</sup>/Lewatit SP112

La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte V: níquel(II))/H<sup>+</sup>/Dowex C400

Modification of clinoptilolite with dialkylphosphinic acid for the selective removal of cobalt (II) and nickel (II) from hydrometallurgical effluent

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