ArticlePloS one2018
Selective biosorption of thorium (IV) from aqueous solutions by ginkgo leaf.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 52 citations in OpenAlex.
- Extraction of thorium from aqueous system using citric acid modified corn cob: characterization, kinetics, thermodynamics and adsorption mechanism.Scientific reports · 2026Article
- Biosorption of thorium onto Chlorella Vulgaris microalgae in aqueous media.Scientific reports · 2024Article
- Optimization of thorium solvent extraction process from feed solution with Cyanex 272 by response surface methodology (RSM).Scientific reports · 2024Article
- Ultra-effective modified clinoptilolite adsorbent for selective thorium removal from radioactive residue.Scientific reports · 2023Article
- Rare earths stick to rare cyanobacteria: Future potential for bioremediation and recovery of rare earth elements.Frontiers in bioengineering and biotechnology · 2023Article
- Optimization, equilibrium, kinetic and thermodynamic studies on adsorptive remediation of phenol onto natural guava leaf powder.Environmental science and pollution research international · 2020Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Low-cost biosorbents (ginkgo leaf, osmanthus leaf, banyan leaf, magnolia leaf, holly leaf, walnut shell, and grapefruit peel) were evaluated in the simultaneous removal of La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Yb3+, Lu3+, UO22+, Th4+, Y3+, Co2+, Zn2+, Ni2+, and Sr2+ from aqueous solutions. In single metal systems, all adsorbents exhibited good to excellent adsorption capacities toward lanthanides and actinides. In a simulated multicomponent mixed solution study, higher selectivity and efficiency were observed for Th4+ over other metal cations, with ginkgo leaves providing the highest adsorptivity (81.2%) among the seven biosorbents. Through optimization studies, the selectivity of Th4+ biosorption on ginkgo leaf was found to be highly pH-dependent, with optimum Th4+ removal observed at pH 4. Th4+ adsorption was found to proceed rapidly with an equilibrium time of 120 min and conform to pseudo-second-order kinetics. The Langmuir isotherm model best described Th4+ biosorption, with a maximum monolayer adsorption capacity of 103.8 mg g-1. Thermodynamic calculations indicated that Th4+ biosorption was spontaneous and endothermic. Furthermore, the physical and chemical properties of the adsorbent were determined by scanning electron microscopy, Brunauer-Emmett-Teller, X-ray powder diffraction, and Fourier transform infrared analysis. The biosorption of Th from a real sample (monazite mineral) was studied and an efficiency of 90.4% was achieved from nitric acid at pH 4 using ginkgo leaves.
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