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Highly efficient adsorbent for removing uranium (VI) from water based on a novel phosphate esterification hyper-cross-linked polymer.
- Source :
-
Journal of Molecular Liquids . Sep2023, Vol. 386, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] • Easily treated organic porous hyper-cross-linked polymers and big BET surface area. • A novel phosphate esterification hyper-cross-linked polymer was prepared. • PHCP-BF has a maximum sorption capacity of 120 mg/g. • High selective and good regeneration of PHCP-BF. There is a strong need for the development of effective uranium sorbents. Here, the Friedel-Crafts reaction was performed in a simple one-step manner followed by phosphate esterification to prepare porous hyper-cross-linked Bisphenol F (PHCP-BF) for prospective utilization in the removal of U(VI) from wastewater. PHCP-BF has pores with a size of 2.6 nm and a significant BET surface area (up to 387.31 m2/g). It was extensively investigated how a variety of environmental conditions (e.g., pH, contact time, temperature, etc.) affected the treatment results. In terms of adsorption capacity, uranium possessed a maximum of 120 mg/g (pH = 7), which is twice that of the original material HCP-BF (59.39 mg/g). According to the modeling results, with the Langmuir isotherm and a pseudo-second-order kinetic model, the data matched the sorption data very well. It was found that PHCP-BF possessed good selectivity for uranium, which was considerably greater than that of other co-existing metals. After three cycles, PHCP-BF still maintained a certain adsorption capacity. In light of several spectroscopic examinations, the mechanism of uranium removal by PHCP-BF is the chelated of P = O with U (VI). The results obtained suggest that PHCP-BF can be used effectively to remove uranium from water. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01677322
- Volume :
- 386
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Liquids
- Publication Type :
- Academic Journal
- Accession number :
- 168585075
- Full Text :
- https://doi.org/10.1016/j.molliq.2023.122431