Compartir
Título
Recycling of Waste Toner Powder as Adsorbent to Remove Aqueous Heavy Metals
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Materials
Número de la revista
12
Datos de la obra
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
Editor
MDPI
Fecha
2022
ISSN
1996-1944
Abstract
[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.
Materia
Palabras clave
Peer review
SI
ID proyecto
- info:eu-repo/grantAgreement/Agencia Estatal de Investigación/Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i /PID2019-106939GB-I00/Jurisdicción/Nombre del proyecto/Acrónimo del proyecto
URI
DOI
Collections
- Untitled [5590]
Files in this item
Tamaño:
8.215
xmlui.dri2xhtml.METS-1.0.size-megabytes
Formato:
Adobe PDF