1. Study on adsorption capacity of uranium tailings-based porous ceramisite for hydroquinone.
- Author
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WU Zhaoyang, GU Yiming, HE Yu, DING Zhoule, SHI Ziehen, LI Mengyu, and GAO Ruqin
- Abstract
Taking uranium tailings treated to hazard-free as the main raw material, a new type of environment functional material-uranium tailings-based porous ceramisite was prepared. The adsorption capacity of uranium tailings porous ceramisite for hydroquinone were investigated. The results indicated that, the removal rate and adsorption capacity of uranium tailings-based porous ceramisite for hydroquinone uranium tailings were 91.2% and 4.56 mg/g respectively with a pH value of 7. During the adsorption of the uranium tailing-based porous ceramsite for hydroquinone, the liquid film diffusion dominated and was more accurately described by the pseudo-first-order kinetic equation. Data fitting degree of Langmuir equation and Koble-Corrigan equation of adsorption isotherm was higher. The adsorption properties of uranium tailings-based porous ceramsite were fixed at a fixed site by a single layer molecular layer, and it was a non-uniform composite adsorption system. The adsorption process of uranium tailings porous ceramisite for hydroquinone was a high fitting for the liquid film diiffusion model. The R² and k value were 0.847 8 and 0.041 7 respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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