Lanfang Hua, Yingying Zhan, Huiqi Fan, Jie Fang, Guangtuan Huang
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Abstract
In this study, the in-situ synthesis of birnessite successfully removed Co2+ from simulated radioactive wastewater. The optimal reaction conditions were determined by single-factor experiments: a reaction time of 60 min, a pH of 11, a reaction temperature of 50°C and a Mn2+/Co2+ molar ratio of 7:1. The removal rate of Co2+ reached 99.97%. XRD confirmed birnessite as the precipitate. FTIR, precipitate dissolution and XPS analyses indicated that the removal mechanisms of Co2+ included hydroxide precipitation (0.36%), adsorption (4.70%) and ion exchange (94.94%). In conclusion, the in-situ synthesis of birnessite for Co2+ removal is promising for the treatment of radioactive wastewater.
期刊介绍：
An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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