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Extracting uranium from seawater has become an important method to supplement the nuclear industry. Herein, we introduce a simple route to load conjugated microporous polymers onto collagen fiber membranes, resulting in a novel membrane adsorbent material (CMPA-F/CFM) for uranium capture. Its Langmuir adsorption capacity reaches 304.9 mg center dot g-(- 1) (at 318 K), with fast adsorption kinetic of 60 min, and excellent adsorption selectivity with Kd d = 4.69 x 104 4 mL center dot g-(- 1) under the temperature of 298 K, initial concentration of 50 mg center dot L-1,-1 , and pH = 7, thus allowing a satisfactory adsorption performance in a 7-day real ocean experiment with a uranium adsorption capacity of 1.25 mg center dot g-1.(-1 ). Furthermore, in continuous dynamic adsorption experiments, CMPA-F/CFM could treat up to 19.0 L center dot g(-1-) 1 of low-enriched uranium (LEU) solution (1 mg center dot L-1),-1 ), with a uranium removal rate of up to 87.5 % (10 L of seawater). This study demonstrates broad potential application of membrane adsorption in extraction of low-enriched uranium.
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CHEMICAL ENGINEERING SCIENCE
ISSN: 0009-2509
Year: 2024
Volume: 295
4 . 1 0 0
JCR@2023
Cited Count:
WoS CC Cited Count: 3
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3