Adsorption of cadmium on cerium oxide nanoparticles and oyster shells

3rd International Conference on Energy Equipment Science and Engineering

Ji, Yongbo^1 ; Liu, Zhuomiao^1 ; Dang, Yonghui^1 ; Xu, Lina^1 ; Ning, Fangyuan^1 ; Xue, Yinhao^1 ; Wei, Yongpeng^1 ; Dai, Yanhui^1

Key Laboratory of Marine Environment and Ecology, Ministry of Education and College of Environmental Science and Engineering, Ocean University of China, Qingdao

266100, China^1

关键词: Cerium oxide nanoparticle;    Negative charge;    Oyster shell;    Positive charges;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012179/pdf
DOI  :  10.1088/1755-1315/128/1/012179

来源: IOP

【 摘 要 】

This study investigated the adsorption of cadmium (Cd(II)) by cerium oxide nanoparticles (CeO2NPs) and oyster shells in seawater. The results showed that the addition of Cd(II) significantly inhibited the agglomeration of CeO2NPs both in DI water and seawater, increased the positive charges of CeO2NPs in DI water and neutralized the negative charges of CeO2NPs in seawater. Additionally, CeO2NPs could adsorb Cd and the bioavailability of Cd was reduced in the presence of oyster shells. This study demonstrated that the adsorption of metals on shells should not be neglected for the accumulation of metals by shellfish.