Korea Atomic Energy Research Institute, 111 Daedeok-daero, 989beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea.
Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong, Daejeon, 34114, Republic of Korea.
Environ Sci Pollut Res Int. 2021 Aug;28(31):42014-42023. doi: 10.1007/s11356-021-13342-6. Epub 2021 Apr 1.
Composite beads consisting of Ca alginate mixed with zinc ferrocyanide (ZnFC) and Cyanex 272 were synthesized in order to selectively adsorb Cs and Co from water. Their physicochemical properties of the synthesized composite beads were characterized using various techniques, including FESEM, EDX, FTIR, and TGA. The ZnFC/Cyanex 272/alginate (ZCA) composite beads were then tested as an adsorbent for the selective removal of Cs and Co from an aqueous solution. The adsorption capacity increased with increasing ZnFC and Cyanex 272 contents. The adsorption process followed the Langmuir model and pseudo-second-order kinetics. The ZCA composite beads exhibited excellent selectivity toward Cs and Co even in the presence of competitive cations (K, Na, Fe, and Ni). The adsorption capacity of the ZCA composite beads for Cs and Co was almost maintained after three times of adsorption-desorption process.
为了从水中选择性地吸附 Cs 和 Co，合成了由 Ca 藻酸盐与锌亚铁氰化物（ZnFC）和 Cyanex 272 混合而成的复合珠。使用各种技术，包括 FESEM、EDX、FTIR 和 TGA，对合成的复合珠的物理化学性质进行了表征。然后，将 ZnFC/Cyanex 272/藻酸盐（ZCA）复合珠用作吸附剂，从水溶液中选择性地去除 Cs 和 Co。吸附容量随 ZnFC 和 Cyanex 272 含量的增加而增加。吸附过程遵循 Langmuir 模型和准二级动力学。即使存在竞争阳离子（K、Na、Fe 和 Ni），ZCA 复合珠对 Cs 和 Co 也表现出优异的选择性。ZCA 复合珠对 Cs 和 Co 的吸附容量在三次吸附-解吸过程后几乎保持不变。
