RT info:eu-repo/semantics/article
T1 Recycling of Waste Toner Powder as Adsorbent to Remove Aqueous Heavy Metals
A1 Fernández Pérez, Begoña
A1 Ayala Espina, Julia María
A1 Del Valle, E.
A1 Martínez-Blanco, D.
A1 Castañón García, Ana María
A1 Menéndez Aguado, Juan María
A2 Explotacion de Minas
K1 Ingenierías
K1 Adsorbentes
K1 Isotermas de adsorción
K1 Eliminación de productos químicos (tratamiento de agua)
K1 Tintes
K1 Metales pesados
K1 Iones de metal
K1 Metales en polvo
K1 Tratamiento de aguas residuales
K1 Reciclaje de agua
K1 Waste toner powders
K1 Adsorption
K1 Heavy metals
K1 Wastewater treatment
K1 3312 Tecnología de Materiales
AB [EN] The removal of Cd2+, Zn2+ and Ni2+ from metal solutions onto waste toner power (WTP) was investigated. The influence of parameters such as pH, contact time, initial metal concentration and adsorbent dosage was studied in batch adsorption experiments. Batch equilibrium experiments showed that the highest removal efficiency for Zn2+ and Cd2+ occurs at pH 7, while pH 5 is the most suitable for Ni2+ removal. The amount of metal removed (mg/g) improved when increasing the initial concentration, and sorption of heavy metals reached equilibrium in 24 h. Metals’ uptake increased with increasing adsorbent dosage. The adsorption isotherms of Zn2+, Cd2+ and Ni2+ onto WTP fit the Langmuir better than the Freundlich model with correlation coefficient R2 values ranging from 0.998 to 0.968 and 0.989 to 0.881, respectively. The data showed that the maximum adsorption capacity of heavy metals, amax, ranged from 2.42 to 1.61 mg/g, from 6.22 to 2.01 mg/g and from 3.49 to 2.56 mg/g for Ni2+, Zn2+ and Cd2+, respectively, with the three WTPs used in this study. This adsorbent can potentially be used to remove metal ions from wastewater.
PB MDPI
SN 1996-1944
LK https://hdl.handle.net/10612/21694
UL https://hdl.handle.net/10612/21694
NO Fernández, B., Ayala, J., Del Valle, E., Martínez-blanco, D., Castañón-garcía, A. M., & Menéndez-aguado, J. M. (2022). Recycling of Waste Toner Powder as Adsorbent to Remove Aqueous Heavy Metals. Materials, 15(12). https://doi.org/10.3390/MA15124150
DS BULERIA. Repositorio Institucional de la Universidad de León
RD Jul 6, 2024