Effective biosorption of uranium from aqueous solution by cyanobacterium Anabaena flos-aquae

Yuan, Yijun; Liu, Nana; Dai, Ying; Wang, Binliang; Liu, Yunzhi; Chen, Chuanhong; Huang, Dejuan

doi:10.1007/s11356-020-10364-4

Cited by 23 publications

(14 citation statements)

References 44 publications

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“…This was due to the competition of H + and UO 2 2+ for adsorption sites and the protonation of amidoxime groups under strong acidic conditions. With the further increase of the initial pH value in solution, uranium ions hydrolyzed to form the colloidal precipitates as UO 2 (OH) 2 •H 2 O, UO 2 (OH) 3− , UO 2 (OH) 4 2− , and so forth, resulting in the decrease of uranium(VI) solubility. In addition, under alkaline conditions, the amidoxime protonation also became weak.…”

Section: Characterization Methodsmentioning

confidence: 99%

“…3 Uranium has strong chemical and radioactive toxicity and can cause many diseases. 4 Moreover, the nonrenewability of uranium will also be harmful to the sustainable use of nuclear energy. 5 Therefore, the treatment of wastewater containing uranium has now become an extraordinarily important issue facing the whole world.…”

Section: Introductionmentioning

confidence: 99%

“…In China, the annual output of radioactive waste is about 0.5% of the total industrial solid garbage . Uranium has strong chemical and radioactive toxicity and can cause many diseases . Moreover, the nonrenewability of uranium will also be harmful to the sustainable use of nuclear energy .…”

Section: Introductionmentioning

confidence: 99%

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Preparation of a Fungal-Modified Material Linked by the Monoamidoxime Terminal Open-Chain Polyether and Its Uranyl Adsorption

Liu

Chen

et al. 2021

Ind. Eng. Chem. Res.

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In this study, some synthetic methods of condensation, substitution, and amidoxime reaction were used to prepare a kind of new fungal-modified material containing the monoamidoxime terminal open-chain polyether, and its microstructure and morphology were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, Brunauer–Emmett–Teller analysis, and thermogravimetric analysis. The single-factor method was used to preliminarily investigate uranium(VI) adsorption capacity of the target material influenced by some factors. On this basis, then the orthogonal experiment was applied to further obtain the optimal adsorption conditions (initial U(VI) concentration: 40 mg L–1, solid–liquid ratio: 25 mg L–1, initial pH value: 6.0, and contact time: 130 min) and the maximum adsorption capacity (295.48 mg g–1). The cyclic adsorption–desorption and anti-interference experiments showed that the target material had good regeneration and uranyl selectivity adsorption performance. Langmuir (nonlinear) (R2 = 0.9704) and Freundlich (nonlinear) (R2 = 0.9675) isotherm models and a pseudosecond-order kinetic model (linear) (R2 = 0.9922) were closely fitted with experimental data, and the uranyl-loaded mechanism should be mainly the monolayer and chemical adsorption process.

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Section: Characterization Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of a Fungal-Modified Material Linked by the Monoamidoxime Terminal Open-Chain Polyether and Its Uranyl Adsorption

Liu

Chen

et al. 2021

Ind. Eng. Chem. Res.

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“…In this study, the superiority of immobilized Nostoc against Scenedesmus beads may be related to the high affinity of cyanobacteria to adsorb uranyl ions, to the adaptability to sequester uranium from its aqueous solution, or to the significant biochemical composition for the favor of metaladsorption process (Cecal et al 2012;Vijayaraghavan et al 2018;Yuan et al 2020).…”

Section: Effect Of Initial Uranium Concentrationmentioning

confidence: 99%

“…The model assumptions include (1) homogeneity of the surface, (2) monolayer adsorption of adsorbates on the surface, (3) no interaction between adsorbed molecules, and (4) a reversible nature of the adsorption process. That is, it considers the sorbate is bound uniformly and consistently on the sorbent's surface, i.e., dynamic equilibrium (El-Naas et al 2007;Yuan et al 2020), whereas the Freundlich isotherm is used to explain the adsorption at a heterogeneous surface. It assumes that adsorption occurred in a multilayered manner, non-ideal, reversible, with different energies of the binding sites (Sahoo and Prelot 2020).…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Biosorption of uranium by immobilized Nostoc sp. and Scenedesmus sp.: kinetic and equilibrium modeling

Ismaiel

El-Ayouty

Abdelaal

et al. 2022

Environ Sci Pollut Res

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Different activities related to uranium mining and nuclear industry may have a negative impact on the environment. Bioremediation of nuclear pollutants using microorganisms is an effective, safe, and economic method. The present study compared the uranium biosorption efficiency of two immobilized algae: Nostoc sp. (cyanophyte) and Scenedesmus sp. (chlorophyte). Effects of metal concentration, contact time, pH, and biosorbent dosage were also studied. The maximum biosorption capacity (60%) by Nostoc sp. was obtained at 300 mg/l uranium solution, 60 min, pH 4.5, and 4.2 g/l algal dosage, whereas Scenedesmus sp. maximally absorbed uranium (65 %) at 150 mg/l uranium solution, 40 min, pH 4.5, and 5.6 g/l of algal dosage. The interaction of metal ions as Na2SO4, FeCl3, CuCl2, NiCl2, CoCl2, CdCl2, and AlCl3 did not support the uranium biosorption by algae. The obtained data was adapted to the linearized form of the Langmuir isotherm model. The experimental qmax values were 130 and 75 mg/g for Nostoc sp. and Scenedesmus sp., respectively. Moreover, the pseudo-second-order kinetic model was more applicable, as the calculated parameters were close to the experimental data. The biosorbents were also characterized by Fourier-transform infrared spectroscopy (ATR-FTIR), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) analyses. The results suggest the applicability of algae, in their immobilized form, for recovery and biosorption of uranium from aqueous solution.

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Efficient removal of U(VI) from aqueous solution using the biocomposite based on sugar beet pulp and pomelo peel

Nuhanović

Smječanin

Curić

et al. 2021

J Radioanal Nucl Chem

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Effective biosorption of uranium from aqueous solution by cyanobacterium Anabaena flos-aquae

Cited by 23 publications

References 44 publications

Preparation of a Fungal-Modified Material Linked by the Monoamidoxime Terminal Open-Chain Polyether and Its Uranyl Adsorption

Preparation of a Fungal-Modified Material Linked by the Monoamidoxime Terminal Open-Chain Polyether and Its Uranyl Adsorption

Biosorption of uranium by immobilized Nostoc sp. and Scenedesmus sp.: kinetic and equilibrium modeling

Efficient removal of U(VI) from aqueous solution using the biocomposite based on sugar beet pulp and pomelo peel

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