HDEHP-CMPO/SiO2-P: a promising solid-phase extractant for uranium recovery from different acidic media

Khayambashi, Afshin; Shu, Qiding; Wei, Yuezhou; Tang, Fangqiong; He, Liang

doi:10.1007/s10967-018-5734-3

Cited by 18 publications

(3 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As displayed in Table S4 and Figure S8, the correlation coefficients ( R 2 ) obtained by fitting the adsorption data with the Langmuir model and Freundlich model were 0.9959 and 0.9742, respectively. The fitting results showed that the Langmuir model was more suitable for the adsorption process of AO-OBHSPIMs than the Freundlich model, and the adsorption process was monolayer adsorption . The results of thermodynamic parameters obtained by fitting the adsorption data (Supporting Information Section S6) are shown in Figure S9 and Table S5.…”

Section: Resultsmentioning

confidence: 99%

“…The fitting results showed that the Langmuir model was more suitable for the adsorption process of AO-OBHSPIMs than the Freundlich model, and the adsorption process was monolayer adsorption. 42 The results of thermodynamic parameters obtained by fitting the adsorption data (Supporting Information Section S6) are shown in Figure S9 and Table S5. ΔG was negative, and its value fell with rising temperature.…”

Section: Influences Of the Contact Timementioning

confidence: 99%

See 1 more Smart Citation

Hierarchical Self-Assembled Polyimide Microspheres Functionalized with Amidoxime Groups for Uranium-Containing Wastewater Remediation

Zhu

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Through molecule self-assembly and subsequent surface functionalization, novel uranium adsorbent AO−OB hierarchical self-assembled polyimide microspheres (AO-OBHSPIMs) were obtained by introducing the amidoxime groups into hierarchical self-assembled polyimide microspheres for the efficient and selective recovery of uranium from wastewater. The results of Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD), and nitrogen adsorption−desorption isotherm showed that AO-OBHSPIMs were a semicrystalline polymer material with self-supporting hierarchical structure and low pore volume, and they were equipped with abundant amidoxime groups. Given the recognized selectivity of amidoxime groups and their hierarchical structure, AO-OBHSPIMs exhibited excellent selectivity to uranyl ions. Moreover, AO-OBHSPIMs exhibited good stability and recyclability and remarkable removal percentage within lowconcentration solution (99.4%) and simulated uranium-containing wastewater (97.3%). AO-OBHSPIMs could be applied to fixedbed column adsorption due to their large particle size and self-supporting hierarchical structure that can facilitate water flow. The indepth discussion of the adsorption mechanism showed that the adsorption mainly depended on the combined action of electrostatic interactions and complexation, and the adsorption process was a spontaneous endothermic monolayer adsorption. In summary, AO-OBHSPIMs exhibited good application prospects in uranium-containing wastewater remediation.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Influences Of the Contact Timementioning

confidence: 99%

Hierarchical Self-Assembled Polyimide Microspheres Functionalized with Amidoxime Groups for Uranium-Containing Wastewater Remediation

Zhu

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Moreover, the calculated value (q m ) was 421 mg g −1 which was not much different from the experimental results q e (415 mg g −1 ), indicating that the Langmuir equation had a higher correlation and the adsorption process was monolayer adsorption. 49 3.2.4 Effect of temperature. As shown in Fig.…”

Section: Effect Of Contact Timementioning

confidence: 99%

Oxime-modified hierarchical self-assembly polyimide microspheres for high-efficient uranium recovery from wastewater

Zhu

Zhang

et al. 2022

Environ. Sci.: Nano

View full text Add to dashboard Cite

show abstract

Sorption and reduction of hexavalent uranium by natural and modified silicate minerals: A review

Yang

2023

Environ Chem Lett

View full text Add to dashboard Cite

HDEHP-CMPO/SiO2-P: a promising solid-phase extractant for uranium recovery from different acidic media

Cited by 18 publications

References 67 publications

Hierarchical Self-Assembled Polyimide Microspheres Functionalized with Amidoxime Groups for Uranium-Containing Wastewater Remediation

Hierarchical Self-Assembled Polyimide Microspheres Functionalized with Amidoxime Groups for Uranium-Containing Wastewater Remediation

Oxime-modified hierarchical self-assembly polyimide microspheres for high-efficient uranium recovery from wastewater

Sorption and reduction of hexavalent uranium by natural and modified silicate minerals: A review

Contact Info

Product

Resources

About