Biosorption characteristics of Ceratophyllum demersum biomass for removal of uranium(VI) from an aqueous solution
Biosorption characteristics of Ceratophyllum demersum biomass for removal of uranium(VI) from an aqueous solution
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DOI：
10.1007/s10967-017-5269-z
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发表时间：
2017-05
影响因子：
1.6
通讯作者：
Zheng-ji Yi;Jun Yao;Mijia Zhu;Huilun Chen;Fei Wang;Xing-yu Liu
中科院分区：
文献类型：
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作者：
Zheng-ji Yi;Jun Yao;Mijia Zhu;Huilun Chen;Fei Wang;Xing-yu Liu
采用金鱼藻对水溶液中的铀（VI）进行了去除实验。研究了pH值、振荡时间、U（VI）初始浓度和温度等吸附参数对吸附效果的影响。U（VI）去除的最适pH为5.0。吸附过程符合准一级动力学模型和Langmuir等温模型。最大单分子吸附容量为140.45mg/g。热力学计算表明，吸附U（VI）是自发的放热过程。藻类表面的氨基、羟基和羰基对U（VI）的吸附有贡献。本研究表明，C.德默西木生物质是一种有效的去除U（VI）污染物的生物吸附剂。
Ceratophyllum demersum was used to remove U(VI) from aqueous solution. Effects of various adsorption parameters such as pH, shaking time, initial U(VI) concentration, and temperature were investigated. The optimum pH for U(VI) removal was 5.0. Pseudo-first-order kinetic model and Langmuir isotherm model could best describe the adsorption process. The maximum monolayer adsorption capacity was 140.45 mg/g. Thermodynamic calculations suggested that the U(VI) adsorption process was spontaneous and exothermic. The amino, hydroxyl, and carbonyl groups on the algal surface could contribute to U(VI) adsorption. The present study suggested that C. demersum biomass could be an efficient biosorbent to remove U(VI) contaminants.