Evidence map›Paper›PMID 42693194›Full record

ArticleScientific reports2026

Development of biochar-based magnetic adsorbent for enhanced Pb(II) ions removal.

Soha M Abd El Wahab, Kareem Elsayed, Hanaa A Zein El Abdeen, Shimaa M Ali

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In one paragraph

Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

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0 citing papers in PubMed.

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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Soha M Abd El WahabPhysics Department, Faculty of Science, Cairo University, Giza, 12613, Egypt.
Kareem ElsayedPhysics Department, Faculty of Science, Cairo University, Giza, 12613, Egypt.
Hanaa A Zein El AbdeenSoil, Water and Environmental Research Institute, Agriculture Research Center (ARC), Giza, 12613, Egypt.
Shimaa M AliChemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt. Sali@sci.cu.edu.eg.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Waster decontamination by Pb(II) is a critical issue that threatens the environmental and human health. Ferrite nanoparticles NCCF, Ni₀.₆Co₀.₁Cu₀.₃Fe₂O₄, loaded on biochar (BC) in different ratios, 0.2 and 0.5 g, are prepared using the hydrothermal technique. X-ray diffraction (XRD), FT-IR spectroscopy, surface area measurements and vibrating sample magnetometer (VSM) are carried out to study the structural, surface characterizations and magnetic properties. XRD pattern identify single phase spinel formation. Biochar has negligible effect on the ferrite crystal structure but reduces lattice strain and promotes structural ordering, mainly through defect formation rather than structural modification. FT-IR indicates that the cubic spinel type has been efficiently deposited on the biochar surface. BET analysis showed that the surface area and pore volume of ferrite are increased at lower biochar loading. VSM analysis revealed that the incorporation of biochar into the ferrite structure decreases the saturation magnetization while preserving moderate coercivity. The prepared samples are used as biosorbents for Pb(II) ions removal from aqueous solutions. Studying the effect of the solution pH revealed that the addition of biochar into the ferrite structure improves adsorption effectiveness under acidic conditions. The adsorption follows the pseudo second order kinetics, implying a chemisorption mechanism through a complexation of surface functional groups. The Freundlich model best explained the adsorption behavior, indicating heterogeneous adsorption sites. The incorporation of biochar significantly enhanced the adsorption capacity, reaching a maximum adsorption capacity of 398.4 mg g⁻¹ for NCCF/BC-0.2, which is substantially higher than those of bare NCCF and BC. In addition, the prepared composites demonstrated good regeneration ability and maintained high Pb(II) removal efficiency in the presence of competing metal ions.

Indexed as

BiomassBiosorbentsMagnetic propertiesWastewater treatmentXRD

Identifiers

PMID42693194
PMCPMC13542253

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