Functionalized graphene oxide/sodium alginate beads with ion responsiveness for uranium trapping. (15th January 2023)

• Record Type: Journal Article
• Authors: Nan, Yu; Wang, Jianli; Chang, Xue; Shao, Kejin; Lin, Yuchen; Qian, Lijuan; Li, Zhan; Hu, Peizhuo
• Is Part Of: Carbohydrate polymers. Volume 300(2023)
• Publication Date: 2023-01-15
• Subjects: Functionalized graphene oxide -- Sodium alginate -- Ion responsiveness -- Swelling -- Uranium-containing wastewater; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2022.120259
• Languages: English
• ISSNs: 0144-8617

Abstract

Abstract: Uranium as a strategic and non-renewable resource has been paid close attention to its efficient recovery and reuse from uranium-containing wastewater. Here, a composite bead was prepared by functionalized graphene oxide and sodium alginate (L-Lys-GO/SA) with ion-stimuli responsiveness for achieving U(VI) adsorption. The L-Lys-GO/SA-60 composite beads can selectively adsorb U(VI) with the maximum adsorption capacity (qmax ) of 704.22 mg/g. Interestingly, the composite beads will swell under the stimulation of ions, which is more conducive to rapid solid-liquid separation and U(VI) recovery at low energy consumption. More importantly, the composite beads also exhibit high reusability of U(VI) adsorption with excellent life span of 80.11 % adsorption rate after 9 cycles, meaning that the composite beads and technology may be used in extraction and production for U(VI) from uranium-containing wastewater. Graphical abstract: Unlabelled Image