Activated carbon from <i>Camellia oleifera</i> shells for adsorption of Y(<scp>iii</scp>): experimental and DFT studies
Bin Zeng, Xiangrong Zeng, Lianghui Hu, Lijinhong Huang, Yuxiang Huang, Yi Zhou, Guoliang Liu, Wanfu Huang
Abstract
, indicating significant potential for recovery of yttrium ions. The adsorption of Y(iii) by the activated carbon prepared from COS was consistent with the Langmuir model, and the adsorption data were consistent with the pseudo second-order kinetic model, indicating that the adsorption process was primarily chemical adsorption. After adsorption, the surface of the activated carbon contained large amounts of N, O, and Y, indicating that Y(iii) was stably adsorbed. The mechanisms for adsorption of Y(iii) on three types of activated carbon were studied through DFT calculations. The results showed that Y(iii) interacted with the carbon atoms on the surfaces to form new chemical bonds. The yttrium ion adsorption capacities for the three different activated carbons decreased in the order C I > C II > C.