The preparation, characterization, and uranium (VI) adsorption properties of tri-amidoxime modified marine fungus material (ZZF51-GPTS-EDA-AM/ZGEA) were investigated in this study. ZGEA was synthesized by four steps of condensation, nucleophilic substitution, electrophilic addition, and nitrile amidoxime and characterized by a series of methods containing FT-IR, TGA, SEM, and BET. Contrasted with uranium (VI) adsorption capacity of original fungus mycelium (15.46 mg g-1) that of the functional material (584.60 mg g-1) was great under the optimal factors such as uranium (VI) ion concentration 40 mg L-1, solid-liquid ratio 50 mg L-1, pH of solution 5.5, and reaction time 120 min. The above data were obtained by the orthogonal method. The cyclic tests showed that ZGEA had good regeneration performance, and it could be recycled at least five adsorption-desorption processes. The thermodynamic experimental adsorption result fitted Langmuir and Freundlich models, which explored monolayer and double layers of uranium (VI) adsorption mechanism, and the kinetic adsorption results were in better consistent with the pseudo-second-order and pseudo-first-order dynamic models (R2 > 0.999).

中文翻译：

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三-肟改性海洋真菌材料的制备及铀（VI）的生物吸附。

本研究研究了三ami肟改性海洋真菌材料（ZZF51-GPTS-EDA-AM / ZGEA）的制备，表征和铀（VI）吸附性能。ZGEA通过缩合，亲核取代，亲电加成和腈nitr肟四个步骤合成，并通过一系列包含FT-IR，TGA，SEM和BET的方法进行表征。在最佳因素如铀（VI）离子浓度40 mg L-1下，与原始真菌菌丝体（15.46 mg g-1）的铀（VI）吸附能力相比，功能材料（584.60 mg g-1）的吸附能力强。 ，固液比50 mg L-1，溶液pH 5.5和反应时间120分钟。以上数据是通过正交方法获得的。循环测试表明，ZGEA具有良好的再生性能，至少可以重复使用五个吸附-解吸过程。热力学实验吸附结果拟合了Langmuir和Freundlich模型，探索了铀（VI）的单层和双层吸附机理，动力学吸附结果与拟二阶和拟一阶动力学模型更好地吻合（ R2> 0.999）。