期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 289, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2021.112506
关键词
Magnetic nanoparticles; Polyelectrolytes; Nanospheres; Adsorption properties; Water cleaning
资金
- Zhejiang Provincial Natural Science Foundation of China [LY18B070003, LGN20B070001]
- Natural Science Foundation of Jiangsu Province [BK20200775]
- Universiti Malaysia Terengganu [UMT/RMIC/2-2/25 Jld 5 (64), 55191, 66955]
The magnetic polyelectrolyte composite nanospheres SA@AM exhibit high adsorption capacity and regeneration performance for the removal of heavy metal pollutants, providing useful information for the production of eco-friendly magnetic nano scale adsorption materials for environmental remediation applications.
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.
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