期刊
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
卷 43, 期 7, 页码 3611-3620出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13369-018-3124-3
关键词
Adsorption; Mechanism; Water treatment; Ion exchange; Electrostatic attraction; Graphene oxide
资金
- College students' innovative experimental project of China [201610699222]
The excessive phosphate discharged into the environment has damaged the ecosystem seriously. In this work, a kind of 3D adsorbents, decorated graphene oxide , was synthesized to deal with phosphate-polluted water. The phosphate adsorption capacity of reached to , in phosphate solution at pH 6.0 and temperature 298 K, and the phosphate adsorption efficiency is very stable between the pH range of 2.0-10.5 and temperature range of 293-333 K. The adsorption progress is rapid, and adsorption equilibrium was reached within 5 min. The phosphate adsorption behavior of fitted the Langmuir model, and the adsorption kinetic fitted the pseudo-second-order model. Ion exchange and electrostatic attraction are the main reactions in the adsorption process. Physical adsorption and chemical adsorption both are in the adsorption process. The phosphate adsorption progress is stable and rapid; thus, it is a good choice to deal with phosphate-polluted water by .
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