Production of magnetic sodium alginate polyelectrolyte nanospheres for lead ions removal from wastewater

Polyelectrolyte composite nanospheres are relatively new adsorbents which have attracted much attention for their efficient pollutant removal and reuse performance. A novel polyelectrolyte nanosphere with magnetic function (SA@AM) was synthesized via the electrostatic reaction between the polyanioni...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental management 2021-07, Vol.289, p.112506-112506, Article 112506
Main Authors: Wang, Jue, Guo, Ming, Luo, Yonghong, Shao, Dongwei, Ge, Shengbo, Cai, Liping, Xia, Changlei, Lam, Su Shiung
Format: Article
Language:English
Subjects:
Adsorption
Adsorption properties
Alginates
Hydrogen-Ion Concentration
Ions
Kinetics
Lead
Magnetic nanoparticles
Magnetic Phenomena
Nanospheres
Polyelectrolytes
Waste Water
Water cleaning
Water Pollutants, Chemical - analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polyelectrolyte composite nanospheres are relatively new adsorbents which have attracted much attention for their efficient pollutant removal and reuse performance. A novel polyelectrolyte nanosphere with magnetic function (SA@AM) was synthesized via the electrostatic reaction between the polyanionic sodium alginate (SA) and the surface of a prepared terminal amino-based magnetic nanoparticles (AMs). SA@AM showed a size of 15–22 nm with 6.85 emu·g−1 of magnetization value, exhibiting a high adsorption capacity on Pb(II) ions representing a common heavy metal pollutant, with a maximum adsorption capacity of 105.8 mg g−1. The Langmuir isotherm adsorption fits the adsorption curve, indicating uniform adsorption of Pb(II) on the SA@AM surfaces. Repeated adsorption desorption experiments showed that the removal ratio of Pb(II) by SA@AM was more than 76%, illustrating improved regeneration performance. These results provide useful information for the production of bio-based green magnetic nano scale adsorption materials for environmental remediation applications. [Display omitted] •New magnetic sodium alginate polyelectrolyte (SA@AM) nanosphere is prepared.•SA@AM shows high adsorption capacity of Pb(II) reaching 105.8 mg g−1•Nano size (15–22 nm) and magnetic function (6.85 emu·g−1) benefit to Pb(II) removal.•SA@AM shows good recovery performance by acid elution with 76% retention.
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2021.112506