Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 319, Issue 1, Pages 437-446Publisher
SPRINGER
DOI: 10.1007/s10967-018-6357-4
Keywords
Hydroxyapatite; Amino modified; Uranium; Adsorption
Funding
- National Natural Science Foundation of China [51702189, 51802176, 51472146]
- Shandong Provincial Natural Science Foundation [ZR2017BEM033, ZR2017QEM002]
- Science and Technology Development Project of Shandong Province [2014GZX201008]
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The amino-hydroxyapatite (HAP-NH2) was synthesized by grafted amino functional groups onto hydroxyapatite. The uranium adsorption performance of HAP-NH2 was studied under different conditions. The results indicated that HAP-NH2 possessed high adsorption capacity (96mgg(-1)), wide pH values range (2-8) and fast adsorption rate (20min). The adsorption kinetic and adsorption isotherm models of HAP-NH2 revealed that the uranium adsorption process was belonged to chemical adsorption. Furthermore, the main forces between uranium ions and HAP-NH2 were attributed to hydroxyl, amino and phosphorous functional groups.
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