Amidoxime-modified ultrathin polyethylene fibrous membrane for uranium extraction from seawater

Polyethyleneimine-functionalized β-cyclodextrin porous polymers for enhanced elimination of U(vi) from wastewater

“…To probe the variation tendency of the PEI-PCDP adsorption performance for U( vi ) with temperature and C 0 , the adsorption performance of materials at 283 K, 293 K, 303 K, and 313 K were determined, and the Langmuir isotherm model (eqn (6)), Freundlich isotherm model (eqn (7)) and Temkin isotherm model (eqn (8)) were also utilized 53where, q e (mg g −1 ) and C e (mg L −1 ) are the adsorption quantity and concentration of U( vi ) at equilibrium, respectively.…”

Biaxial Stretching to Prepare the Membrane Adsorbent to Achieve the Ultrafast Adsorption of Uranium from Seawater

“…The thickness of the UTPENFM measured by the spiral micrometer is 2.5 ± 0.5 μm. Compared to the PENFM, both the crystallinity and the orientation of the According to previous reports, 58 PENFM-g-PHEA-(PAO-co-PAA) (AO−PENFM) and AO−UTPENFM were synthesized by RIGP�CIGP using the PENFM and the UTPENFM as substrates, respectively. Taking the synthesis of the AO− PENFM adsorbent as an example, the operation is shown in Scheme 1: (1) First, HEA was grafted onto the PENFM by RIGP.…”

Regulating the preparation of antibacterial poly(amidoxime) for efficient uranium extraction from seawater

“…As a typical uranium resource, seawater has attracted worldwide attention because an estimated ∼4.5 billion tons of U(VI) in seawater can solve the global shortage of uranium. 3,4 There is thus an urgent need to develop appropriate methods and materials for seawater U(VI) extraction. [5][6][7] Thus far, several technologies have been reported to recover U(VI) from seawater, such as ionic exchange, electrochemical process, co-precipitation, and adsorption method.…”