A new method for the preconcentrations of U(VI) and Th(IV) by magnetized thermophilic bacteria as a novel biosorbent
Autor: | Sadin Özdemir, Ersin Kılınç, Mustafa Soylak, M. Serkan Yalcin |
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Rok vydání: | 2020 |
Předmět: |
Iron oxide
chemistry.chemical_element 02 engineering and technology 01 natural sciences Biochemistry Analytical Chemistry chemistry.chemical_compound Column chromatography 010401 analytical chemistry Extraction (chemistry) Solid Phase Extraction Thorium Biosorption Uranium Cells Immobilized 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Yield (chemistry) Magnetic Iron Oxide Nanoparticles Adsorption 0210 nano-technology Anoxybacillus Iron oxide nanoparticles Water Pollutants Chemical Nuclear chemistry |
Zdroj: | Analytical and bioanalytical chemistry. 413(4) |
ISSN: | 1618-2650 |
Popis: | This paper proposes the use of Anoxybacillus flavithermus SO-15 immobilized on iron oxide nanoparticles (NPs) as a novel magnetized biosorbent for the preconcentrations of uranium (U) and thorium (Th). The SPE procedure was based on biosorption of U(VI) and Th(IV) on a column of iron oxide NPs loaded with dead and dried thermophilic bacterial biomass prior to U(VI) and Th(IV) measurements by ICP-OES. The biosorbent characteristicswere explored using FT-IR, SEM, and EDX. Significant operational factors such as solution pH, volume and flow rate of the sample solution, amounts of dead bacteria and iron oxide nanoparticles, matrix interference effect, eluent type, and repeating use of the biosorbent on process yield were studied. The biosorption capacities were found as 62.7 and 56.4 mg g(-1) for U(VI) and Th(IV), respectively. The novel extraction process has been successfullyapplied to the tap, river, and lake water samples for preconcentrations of U(VI) and Th(IV). |
Databáze: | OpenAIRE |
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