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Adsorption of 140La and 144Ce radionuclides on ZnO nanoparticles: equilibrium and kinetics studies
Journal of Radioanalytical and Nuclear Chemistry ( IF 1.6 ) Pub Date : 2020-10-17 , DOI: 10.1007/s10967-020-07447-4
Faleh Z. Alqahtany , M. Khalil

A comparative evaluation adsorption of 140La and 144Ce from water solutions on chemical ZnO (ZnO-C) and green synthesis ZnO (ZnO-G) by Nerium oleander flowers extract. Various parameters including pH, time and concentration were optimized to achieve maximum adsorption capacity. The adsorption efficiency of 140La and 144Ce was 59 and 69 on ZnO-G and 61 and 44% on ZnO-C respectively. Langmuir and pseudo-second order kinetic models were best suited to explain the adsorption process. The amount adsorbed of 140La and 144Ce ions at equilibrium (qe) was 23.9 and 27.8 on ZnO-G and 17.8 and 24.5 mg/g on ZnO-C respectively.

中文翻译:

140La 和 144Ce 放射性核素在 ZnO 纳米颗粒上的吸附:平衡和动力学研究

夹竹桃花提取物对化学氧化锌 (ZnO-C) 和绿色合成氧化锌 (ZnO-G) 水溶液中 140La 和 144Ce 的吸附比较评价。优化各种参数,包括 pH、时间和浓度,以实现最大的吸附容量。140La和144Ce在ZnO-G上的吸附效率分别为59%和69%,在ZnO-C上的吸附效率分别为61%和44%。Langmuir 和准二级动力学模型最适合解释吸附过程。平衡时 140La 和 144Ce 离子的吸附量 (qe) 在 ZnO-G 上分别为 23.9 和 27.8,在 ZnO-C 上分别为 17.8 和 24.5 mg/g。
更新日期:2020-10-17
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