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

Wang J 1 , Guo M 2 , Luo Y 3 , Shao D 4 , Ge S 3 , Cai L 3 Show all authors , Xia C 5 , Lam SS 6

Affiliations 

  • 1 State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China; College of Science, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
  • 2 State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China; College of Science, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China. Electronic address: guoming@zafu.edu.cn
  • 3 Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
  • 4 College of Mechanical Engineering, Jiamusi University, Jiamusi, Heilongjiang, 154007, China
  • 5 Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China. Electronic address: changlei.xia@njfu.edu.cn
  • 6 Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China; Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Henan Province Engineering Research Center for Biomass Value-added Products, School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China. Electronic address: lam@umt.edu.my
J Environ Manage, 2021 Jul 01;289:112506.
PMID: 33831760 DOI: 10.1016/j.jenvman.2021.112506

Abstract

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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

MeSH terms
Similar publications