The Adsorptive Ability of 3D Flower-Like Titanium Phosphate for U(VI) in Aqueous Solution

• Published in: Water, air, and soil pollution air, and soil pollution, 2020-09, Vol.231 (9), Article 464
• Main Authors: Wang, Youqun, Zeng, Dejun, Dai, Ying, Fang, Chenglei, Han, Xuewen, Zhang, Zhibin, Cao, Xiaohong, Liu, Yunhai
• Format: Article
• Language: English
• Subjects: Acids; Adsorbents; Adsorption; Adsorptivity; Aqueous solutions; Atmospheric Protection/Air Quality Control/Air Pollution; Climate Change/Climate Change Impacts; Earth and Environmental Science; Environment; Environmental monitoring; Ethanol; Experiments; Flowers; Hydrogeology; Immobilization; Ion exchange; Kinetics; Laboratories; Morphology; Nuclear energy; Nuclear fuel cycle; Phosphates; Phosphoric acid; Radiation; Reaction kinetics; Soil Science & Conservation; Temperature; Thermodynamics; Three dimensional flow; Titanium; Wastewater; Water Quality/Water Pollution
• ISSN: 0049-6979; 1573-2932
• DOI: 10.1007/s11270-020-04817-2

In the present work, 3D flower-like nanostructure titanium phosphates (F-TiP/T; T is the temperature of preparation in Celsius) were prepared through the reaction of tetrabutyl titanate (TBOT) with concentrated phosphoric acid. And F-TiP/T were applied to remove of U(VI). Furthermore, the effects of the preparation temperature, initial solution pH, and the kinetics and thermodynamics of U(VI) adsorbed by F-TiP/T were comprehensively explored. The characterization results of SEM and XRD indicated that the morphology of F-TiP/T was flower-like with a phase of Ti(HPO 4 ) 2 •2H 2 O. Moreover, the adsorption results indicated that the processes were fitting to pseudo-first-order and Sips models and the saturated adsorption capacity was recorded as 295.13 mg·g −1 . The extraction of U(VI) on F-TiP/T was dominated by ion exchange. The results above indicate that F-TiP/T is a potentially efficient U(VI) adsorbent, which could be utilized in the removal and immobilization of U(VI) in wastewater.