Authors
Yan Jiao, Xiaofei Xu, Tingting Liu, Chenguang Zhang, Xiuli Shen, Xincheng Chen, Jingpeng Zhou, Fuli Yang, Shaoqing Wang
Published in
Environmental research. Pages 125982. Oct 19, 2026. Epub Oct 19, 2026.
Abstract
Coexisting metals can alter the removal of nanoplastics by magnetic biochar, but comparisons between single- and mixed-metal treatments depend on the concentrations used. We evaluated the apparent uptake of dispersed polystyrene (PS) nanoplastics by magnetic biochar (MBC) under metal-free, Pb(II), Zn(II), and binary Pb(II)/Zn(II) conditions. Each metal was added at 50 mg L-1 in the corresponding treatment. At an initial PS concentration of 100 mg L-1, the apparent uptake capacities were 24.25, 19.40, 14.48, and 21.14 mg g-1, respectively. The binary value was numerically higher than either single-metal value but remained below the metal-free control. Because the binary treatment contained twice the total metal concentration of each single-metal treatment, the observed binary response reflects the combined influence of metal composition and total loading. Control measurements showed metal-associated changes in PS aggregation, while SEM-EDS and XPS analyses detected Pb and Zn on recovered MBC and indicated changes in the surface chemical environment. Selected finite-cluster calculations further illustrated configuration-dependent local metal arrangements and electronic redistribution at the modeled PS-MBC interface. Together, these results establish a treatment-dependent adsorption response under defined batch conditions and indicate that metal identity, total loading, and local interfacial configuration jointly influence dispersed PS removal.
PMID:
42896798
Bibliographic data and abstract were imported from PubMed on 20 Oct 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 10
- Comments 0