State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, China.
School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, China.
Environ Sci Pollut Res Int. 2020 Dec;27(35):44306-44313. doi: 10.1007/s11356-020-10364-4. Epub 2020 Aug 6.
Anabaena flos-aquae, a typical species of cyanobacterial bloom, was employed as a useful biosorbent for uranium removal. Batch experiments were conducted to examine the effects of different parameters on the uranium uptake amount of Anabaena flos-aquae. The maximum adsorption capacity of 196.4 mg/g was obtained under the optimized experimental conditions. The calculations of kinetic and thermodynamic results proved the adsorption process was endothermic, chemisorption, and spontaneous. The adsorption of uranium onto Anabaena flos-aquae was better defined by the Langmuir model, which indicated the process was a monolayer sorption. In addition, the characterization of the biosorbent before and after uranium sorption implied that the dominant functional groups participated in the uranium adsorption process were hydroxyl, amino, and carboxyl. In conclusion, the environmentally friendly and biocompatible characteristics of Anabaena flos-aquae suggest that it can be a promising biosorbent for uranium removal.
水华鱼腥藻是一种典型的蓝藻水华物种，被用作去除铀的有用生物吸附剂。进行了批量实验，以研究不同参数对水华鱼腥藻铀吸附量的影响。在优化的实验条件下，获得了 196.4 mg/g 的最大吸附容量。动力学和热力学结果的计算证明吸附过程是吸热的、化学吸附的和自发的。铀在水华鱼腥藻上的吸附更符合朗缪尔模型，表明该过程是单层吸附。此外，铀吸附前后生物吸附剂的特性表明，参与铀吸附过程的主要官能团是羟基、氨基和羧基。总之，水华鱼腥藻具有环保和生物相容性的特点，表明它可以成为一种有前途的去除铀的生物吸附剂。
