Removal of uranium from aqueous solution by phosphate functionalized superparamagnetic polymer microspheres Fe 3 O 4 /P(GMA–AA–MMA)
作者： Dingzhong Yuan , Xin Xiong , Long Chen , Yuan Lv , Yun Wang
DOI: 10.1007/S10967-015-4682-4
关键词: Langmuir adsorption model 、 Aqueous solution 、 Adsorption 、 Monolayer 、 Superparamagnetism 、 Emulsion polymerization 、 Inorganic chemistry 、 Polymer 、 Sorbent 、 Chemistry
摘要: A new phosphate functionalized superparamagnetic polymer sorbent Fe3O4/P(GMA–AA–MMA)-PO4 was developed by functionalizing Fe3O4/P(GMA–AA–MMA) prepared soap free emulsion polymerization with o-phosphoethanolamine. The adsorption process spontaneous and endothermic in nature kinetically followed pseudo second-order model. maximum monolayer capacity obtained from the Langmuir model 274.7 mg g−1 at 298 K. could selectively adsorb U(VI) aqueous solution containing co-existing ions selectivity of reach up to 77 % pH 4.5. Furthermore, novel magnetic also be easily separated recovered solutions an external field.
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