Self-oxidation cycle of oxidized red phosphorus for regeneration of binding sites enables efficient uranium extraction in tributylphosphate-kerosene system

Lv, Yingtong; Cheng, Ru; Yang, Guolin; Liu, Wang; Zhang, Jingye; Yu, Xiaofang; Bai, Weixing; He, Rong; Zhu, Wenkun

doi:10.1016/j.cej.2023.141834

Cited by 5 publications

(4 citation statements)

References 54 publications

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“…The expansion of uranium mining has led to a rapid increase in the discharge of highly mobile and complex uranium containing wastewater, constantly migrating through groundwater sources. − Once uranium migrates to the surrounding ecological environment, because of its high chemical toxicity, it can seriously impact the natural environment and human health . The enrichment and separation of uranium from uranium mine wastewater is a pressing issue that must be addressed. − Uranium is frequently found in two valence states: hexavalent uranium (U(VI)) and tetravalent uranium (U(IV)) . As is well-known, U(VI) mainly exists in the form of soluble UO 2 2+ , which is highly susceptible to migration with groundwater flow, causing a wider range of radioactive contamination and heavy metal poisoning. − Therefore, it is efficient to convert highly mobile U(VI) to low-mobility U(IV) before treating effluent from uranium mines …”

Section: Introductionmentioning

confidence: 99%

Enhancing Commercially Iron Powder Electron Transport by Surface Biosulfuration to Achieve Uranium Extraction from Uranium Ore Wastewater

Yang,

Wei,

Wang

et al. 2024

Inorg. Chem.

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The zero-valent iron (ZVI) has attracted increasing attention due to the enhanced reactivity of ZVI to uranium wastewater. However, ZVI practical application is hampered due to its susceptibility to oxidation and the formation of passivation layers during storage and in situ restoration. To address these issues, we used a biosulfuration approach to modify ZVI for application in uranium ore wastewater treatment. A series of physicochemical characterization tools and photoelectronic analyses showed that BS-ZVI considerably increased carrier separation efficiency and visible light absorption capacity, resulting in a significant photoassisted enhancement effect on uranium extraction. Accordingly, the uranium removal efficiency of BS-ZVI reached 91% within 60 min, and its maximum adsorption capacity was 336.3 mg/g. By analyzing the mechanism, the improved U(VI) removal performance was mostly responsible on the dissolution of the passivation layer on the surface of ZVI, the generation of Fe(II) and FeS, and the important role of Shewanella putrefaciens extracellular polymers (EPS). Overall, the BS-ZVI biohybrid merges with the high activity of ZVI, bio-FeS, and self-regeneration ability of bacteria, expanding a promising new approach for sustainable treatment of uranium mine wastewater.

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Section: Introductionmentioning

confidence: 99%

Enhancing Commercially Iron Powder Electron Transport by Surface Biosulfuration to Achieve Uranium Extraction from Uranium Ore Wastewater

Yang,

Wei,

Wang

et al. 2024

Inorg. Chem.

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“…In the nuclear industry, TBP is commonly diluted with kerosene (30% TBP in kerosene) as an extractant to separate uranium and plutonium. 43 Considering the practicability of the CeO 2 -catalyzed process, the effects of other organic matter and metal ions on TBP treatment were investigated. Kerosene (KO) and uranyl ions were selected as the typical organic matter and metal ions, respectively.…”

Section: Effects Of Typical Reaction Parameters On the Degradation An...mentioning

confidence: 99%

“…The addition of uranyl ions (5 wt % uranium ion in TBP) slightly decreased I P to 91.08%, which might be ascribed to the strong coordination between TBP and U(VI). 43 In general, the CeO 2 -catalyzed system exhibited considerable practicability toward waste TBP solvent treatment.…”

Section: Effects Of Typical Reaction Parameters On the Degradation An...mentioning

confidence: 99%

Treatment of Organophosphorus Esters Waste by CeO₂: Efficient Degradation with Simultaneous Phosphorus Immobilization

Wang,

Zheng,

Tong

et al. 2023

Ind. Eng. Chem. Res.

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Organophosphorus esters (OPEs) are important chemicals functioning as extractants, plasticizers, flame retardants, solvents, additives, etc., and are also recognized as hazardous organic liquids generated from industrial processes. Herein, we developed a CeO2-catalyzed degradation with simultaneous phosphorus immobilization technology to treat typical OPE solvents. Under the investigated reaction conditions of a temperature of 180 °C, a reaction time of 3 h, and a dosage of ball-milled CeO2 of 19.8 g mL–1 of the OPE, the model pollutant of tributyl phosphate (TBP) was efficiently degraded with phosphorus immobilization efficiency near 100%. Meanwhile, the mineralization efficiency of TBP was also as high as 98%, which was reflected by the chemical oxygen demand change of liquid products. Gaseous products generated from CeO2-catalyzed TBP degradation could also fulfill the requirements of an environmental standard. Further mechanism studies indicated that the surface oxygen vacancy in CeO2 induced the in situ formation of superoxide radicals, which dominated TBP degradation. During catalytic degradation, the P-containing species were mainly immobilized as cerium phosphate, while the hydrocarbon chains of TBP were degraded into small molecules and finally mineralized into inorganic species. The developed CeO2-catalyzed OPE degradation approach was also applicable to aromatic and halogenated OPEs, i.e., tricresyl phosphate and tris(2-chloroethyl) phosphate. This study provided a possible alternative for waste treatment of the waste of OPEs with low environmental risks.

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“…The acidic extractant has potential to extract the cation via cation exchange mechanism. Meanwhile, the basic extractant can effectively extract the anionic compound through anionic exchange mechanism [17]. Likewise, the stripping agent in solvent extraction also plays an important role in stripping or recovering the extracted targeted compound.…”

Section: Introductionmentioning

confidence: 99%

Novel Extraction of Phosphorus using Interaction of Tricaprylylmethylammonium Chloride (TOMAC) with Biodegradable Mixture of Vegetable Oils

Raja Sulaiman,

Rosli,

Othman

et al. 2023

Mal. J. Fund. Appl. Sci.

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This work addresses the development of green formulation for phosphorus compound removal from aqueous solution via solvent extraction process. Several types of extractants, diluents and stripping agents were experimentally investigated and the best formulation was determined. Additionally, other parameters investigated were extractant and stripping agent concentrations. Results showed that TOMAC, a mixture of palm oil (PO) and sunflower oil (SO) as well as sodium chloride (NaCl) turned out to be the best extractant, diluent and stripping agent, respectively. Almost 100 % of 50 ppm of phosphorus were successfully extracted under optimum conditions of 0.3M TOMAC in a mixture of 50% PO + 50% SO. Fourier-transform infrared spectroscopy (FTIR) analysis confirmed the intermolecular bonding formation between phosphorus, vegetable oils and TOMAC molecules. Meanwhile, almost 96.5% of phosphorus can be recovered using 1.0M NaCl in two stages of stripping process. Stoichiometric studies showed that about one mole of TOMAC and NaCl were involved during the extraction and stripping reaction of phosphorus, respectively. It can be concluded that the solvent extraction with new green formulation containing TOMAC in interaction with vegetable oils seems to be one of the novel sustainable approaches in removing phosphorus from agricultural wastewater.

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Self-oxidation cycle of oxidized red phosphorus for regeneration of binding sites enables efficient uranium extraction in tributylphosphate-kerosene system

Cited by 5 publications

References 54 publications

Enhancing Commercially Iron Powder Electron Transport by Surface Biosulfuration to Achieve Uranium Extraction from Uranium Ore Wastewater

Enhancing Commercially Iron Powder Electron Transport by Surface Biosulfuration to Achieve Uranium Extraction from Uranium Ore Wastewater

Treatment of Organophosphorus Esters Waste by CeO₂: Efficient Degradation with Simultaneous Phosphorus Immobilization

Novel Extraction of Phosphorus using Interaction of Tricaprylylmethylammonium Chloride (TOMAC) with Biodegradable Mixture of Vegetable Oils

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Self-oxidation cycle of oxidized red phosphorus for regeneration of binding sites enables efficient uranium extraction in tributylphosphate-kerosene system

Cited by 5 publications

References 54 publications

Enhancing Commercially Iron Powder Electron Transport by Surface Biosulfuration to Achieve Uranium Extraction from Uranium Ore Wastewater

Enhancing Commercially Iron Powder Electron Transport by Surface Biosulfuration to Achieve Uranium Extraction from Uranium Ore Wastewater

Treatment of Organophosphorus Esters Waste by CeO2: Efficient Degradation with Simultaneous Phosphorus Immobilization

Novel Extraction of Phosphorus using Interaction of Tricaprylylmethylammonium Chloride (TOMAC) with Biodegradable Mixture of Vegetable Oils

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Product

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Treatment of Organophosphorus Esters Waste by CeO₂: Efficient Degradation with Simultaneous Phosphorus Immobilization