Sorption of Uranium on a Bifunctional Polymer of Diethylenetriaminepentaacetic Acid Cross-Linked β-Cyclodextrin in the Presence of Humic Acid: Kinetics, Isotherms, and Thermodynamics
Humic acid (HA) plays an important role in the migration and transformation of uranium in natural waters. To effectively remove uranium in the presence of HA, a bifunctional polymer, diethylenetriaminepentaacetic acid cross-linked β-cyclodextrin (DTPA-β-CD), was synthesized by polycondensation reaction. The sorption performance of DTPA-β-CD in functions of pH, ionic strength, contact time, initial time, and temperature were explored batch wise. Experimental results showed that DTPA-β-CD could concurrently sorb uranium and HA around pH of 3.0. The sorption strongly depended on pH and on ionic strength, demonstrating outer-sphere surface complex in nature. Two sorption kinetics well followed pseudo-second-order model. Sorption isotherm accorded with Sips model. Increasing temperature facilitated uranium and restrained HA sorption. This work demonstrated that DTPA-β-CD was a promising material for sorbing uranium in the presence of HA.
KeywordsSorption Uranyl Humic acid Diethylenetriaminepentaacetic acid β-Cyclodextrin
The present work was financially supported by the National Natural Science Foundation of China (Nos. 11605027, 11705060, 41361088), the Project of the Jiangxi Provincial Department of Education (No. GJJ150560), and the Open Fund Project of State Key Laboratory of Nuclear Resources and Environment of East China Institute of Technology (NRE1512, NRE1410).
- Bugter, M., & Reichwein, A. M. A. (2005). pH stability of Fe-chelates in soilless culture. International Conference and Exhibition on Soilless Culture, ICESC, 742, 61–66.Google Scholar
- Chen, L., Bai, Z., Zhu, L., Zhang, L., Cai, Y., Li, Y., Liu, W., Wang, Y. L., Chen, L. H., Diwu, J., Wang, J. Q., Chai, Z. F., & Wang, S. A. (2017a). Ultrafast and efficient extraction of uranium from seawater using an amidoxime appended metal-organic framework. ACS Applied Materials & Interfaces, 9(38), 32446–32451.CrossRefGoogle Scholar
- Galvão, J. G., Silva, V. F., Ferreira, S. G., França, F. R. M., Santos, D., Freitas, L. S., Alves, P. B., Araújo, A. A. S., Cavacanti, S. C. H., & Nunes, R. S. (2015). β-cyclodextrin inclusion complexes containing Citrus sinensis (L.) Osbeck essential oil: an alternative to control Aedes aegypti larvae. Thermochimica Acta, 608, 14–19.CrossRefGoogle Scholar
- Hou, Y. N., Xing, Y. H., Bai, F. Y., Guan, Q. L., Wang, X., Zhang, R., & Shi, Z. (2014). Synthesis, crystal structure, photoluminescence property and photoelectronic behavior of two uranyl-organic frameworks constructed from 1, 2, 4, 5-benzenetetracarboxylic acid as ligand. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 123, 267–272.CrossRefGoogle Scholar
- Huang, Z., Li, Z., Zheng, L., Zhou, L., Chai, Z., Wang, X., & Shi, W. (2017). Interaction mechanism of uranium (VI) with three-dimensional graphene oxide-chitosan composite: insights from batch experiments, IR, XPS, and EXAFS spectroscopy. Chemical Engineering Journal, 328, 1066–1074.CrossRefGoogle Scholar
- Li, X., Wang, S., Liu, Y., Jiang, L., Song, B., Li, M., Zeng, G., Tan, X., Cai, X., & Ding, Y. (2017). Adsorption of Cu(II), Pb(II), and Cd(II) ions from acidic aqueous solutions by diethylenetriaminepentaacetic acid-modified magnetic graphene oxide. Journal Chemical Engineering Data, 62(1), 407–416.CrossRefGoogle Scholar
- Nelson, A.W., Knight, A.W., May, D., Eitrheim, E.S., Schultz, M.K. (2015). Naturally-occurring radioactive materials (NORM) associated with unconventional drilling for shale gas. In Hydraulic fracturing: environmental issues (pp. 89–128). American Chemical Society.Google Scholar
- Okoshi, M., & Nakayama, S. (2015). Generation and characteristics of radioactive wastes. Radioactive Waste Engineering and Management. Springer Japan, 17–46.Google Scholar