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

Jue Wang; Ming Guo; Yonghong Luo; Dongwei Shao; Shengbo Ge; Liping Cai; Changlei Xia; Su Shiung Lam

doi:10.1016/j.jenvman.2021.112506

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

J Environ Manage. 2021 Jul 1:289:112506. doi: 10.1016/j.jenvman.2021.112506. Epub 2021 Apr 5.

Authors

Jue Wang¹, Ming Guo², Yonghong Luo³, Dongwei Shao⁴, Shengbo Ge³, Liping Cai³, Changlei Xia⁵, Su Shiung Lam⁶

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.

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.

Keywords: Adsorption properties; Magnetic nanoparticles; Nanospheres; Polyelectrolytes; Water cleaning.

MeSH terms

Adsorption
Alginates
Hydrogen-Ion Concentration
Ions
Kinetics
Lead
Magnetic Phenomena
Nanospheres*
Polyelectrolytes
Wastewater
Water Pollutants, Chemical* / analysis

Substances

Alginates
Ions
Polyelectrolytes
Waste Water
Water Pollutants, Chemical
Lead