铀
吸附
吸附
化学
朗缪尔吸附模型
核化学
废水
磷酸盐
双酚A
选择性
朗缪尔
螯合作用
无机化学
材料科学
有机化学
催化作用
废物管理
冶金
环氧树脂
工程类
作者
Yao Tian,Yudan Wang,Chao Wang,Guo Ping Zhu,Lijia Liu,Fuqiu Ma,Hongxing Dong,W. Zhang
标识
DOI:10.1016/j.molliq.2023.122431
摘要
There is a strong need for the development of effective uranium sorbents. Here, the Friedel-Crafts reaction was performed in a simple one-step manner followed by phosphate esterification to prepare porous hyper-cross-linked Bisphenol F (PHCP-BF) for prospective utilization in the removal of U(VI) from wastewater. PHCP-BF has pores with a size of 2.6 nm and a significant BET surface area (up to 387.31 m2/g). It was extensively investigated how a variety of environmental conditions (e.g., pH, contact time, temperature, etc.) affected the treatment results. In terms of adsorption capacity, uranium possessed a maximum of 120 mg/g (pH = 7), which is twice that of the original material HCP-BF (59.39 mg/g). According to the modeling results, with the Langmuir isotherm and a pseudo-second-order kinetic model, the data matched the sorption data very well. It was found that PHCP-BF possessed good selectivity for uranium, which was considerably greater than that of other co-existing metals. After three cycles, PHCP-BF still maintained a certain adsorption capacity. In light of several spectroscopic examinations, the mechanism of uranium removal by PHCP-BF is the chelated of P = O with U (VI). The results obtained suggest that PHCP-BF can be used effectively to remove uranium from water.
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