Biosorption characteristics of uranium(VI) from aqueous solution by pummelo peel
Biosorption characteristics of uranium(VI) from aqueous solution by pummelo peel
复制标题
柚皮对水溶液中铀(VI)的生物吸附特性
DOI：
10.1007/s10967-012-1720-3
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发表时间：
2012-07-01
影响因子：
1.6
通讯作者：
Hua, Ming
中科院分区：
文献类型：
--
作者：
Li, Qin;Liu, Yunhai;Hua, Ming
选择生物质柚皮作为生物吸附剂，用于从水溶液中去除铀（VI）。通过批量吸附实验研究了柚皮吸附U(VI)的可行性。详细研究了接触时间、生物吸附剂用量和pH值对吸附能力的影响。在初始pH 5.5、浓度50 μg/mL、温度303 K、接触时间7 h时，柚皮表现出最高的U(VI)吸附容量，为270.71 mg/g。 U(VI)的吸附过程符合准二级动力学方程。吸附等温线研究表明其同时遵循Langmuir吸附等温线和Freundlich吸附等温线。计算的热力学参数值清楚地表明吸附过程是可行的、自发的和吸热的。这些特性表明柚子皮在去除放射性废水中的铀（VI）方面具有潜在的应用前景。
The biomass pummelo peel was chosen as a biosorbent for removal of uranium(VI) from aqueous solution. The feasibility of adsorption of U(VI) by Pummelo peel was studied with batch adsorption experiments. The effects of contact time, biosorbent dosage and pH on adsorption capacity were investigated in detail. The pummelo peel exhibited the highest U(VI) sorption capacity 270.71 mg/g at an initial pH of 5.5, concentration of 50 mu g/mL, temperature 303 K and contacting time 7 h. The adsorption process of U(VI) was found to follow the pseudo-second-order kinetic equation. The adsorption isotherm study indicated that it followed both the Langmuir adsorption isotherm and the Freundlich adsorption isotherm. The thermodynamic parameters values calculated clearly indicated that the adsorption process was feasible, spontaneous and endothermic in nature. These properties show that the pummelo peel has potential application in the removal of the uranium(VI) from the radioactive waste water.