RT Journal Article
T1 Efficient Separation of Heavy Metals by Magnetic Nanostructured Beads
A1 Alves, Lisandra Cristina de Castro
A1 Yáñez Vilar, Susana
A1 Piñeiro Redondo, Yolanda
A1 Rivas Rey, José
K1 Heavy metals
K1 Magnetite nanoparticles
K1 Adsorption
K1 Nanocomposite
K1 Hybrid
K1 Multi-metal
K1 Water
AB This study reports the ability of magnetic alginate activated carbon (MAAC) beads to remove Cd(II), Hg(II), and Ni(II) from water in a mono-metal and ternary system. The adsorption capacity of the MAAC beads was highest in the mono-metal system. The removal efficiency of such metal ions falls in the range of 20–80% and it followed the order Cd(II) > Ni(II) > Hg(II). The model that best fitted in the ternary system was the Freundlich isotherm, while in the mono-system it was the Langmuir isotherm. The maximum Cd(II), Hg(II), and Ni(II) adsorption capacities calculated from the Freundlich isotherm in the mono-metal system were 7.09, 5.08, and 4.82 (mg/g) (mg/L)1/n, respectively. Lower adsorption capacity was observed in the ternary system due to the competition of metal ions for available adsorption sites. Desorption and reusability experiments demonstrated the MAAC beads could be used for at least five consecutive adsorption/desorption cycles. These findings suggest the practical use of the MAAC beads as efficient adsorbent for the removal of heavy metals from wastewater
PB MDPI
YR 2020
FD 2020
LK http://hdl.handle.net/10347/23827
UL http://hdl.handle.net/10347/23827
LA eng
NO de Castro Alves, L.; Yáñez-Vilar, S.; Piñeiro-Redondo, Y.; Rivas, J. Efficient Separation of Heavy Metals by Magnetic Nanostructured Beads. Inorganics 2020, 8, 40
NO This research was supported by EP-INTERREG V A (POCTEP) Funds (project NANOEATERS/1378) and by the Consellería de Educación Program for Reference Research Groups project (GPC2017/015 and the Development of Strategic Grouping in Materials—AEMAT at the University of Santiago de Compostela under Grant No. ED431E2018/08, of the Xunta de Galicia
DS Minerva
RD 24 abr 2026