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Issue
Korean Journal of Chemical Engineering,
Vol.33, No.11, 3251-3257, 2016
Optimization of operating conditions in the purification of graphite oxide dispersions
Tan W, Liu Y, Liu L, Xing R, Zhu G
In the graphite oxide (GO) suspension purification process, some metallic impurities in GO cannot be separated. The residual metallic impurities dominate graphite oxide properties and have a negative influence on applications. Therefore, the removal of metallic impurities from graphite oxide has been brought into focus now. Single factor experiments and orthogonal experiments are used to get the optimal purification condition. The results show that purification agent, temperature, stirring intensity and contact time affect the purification degree, and the purification agent is the most important element for the purification efficiency. The optimal purification condition is 10% hydrochloric acid (H10), 20 ℃, 0 rpm and 60 min. Besides, the theoretical stage is calculated by the mass conservation equation and distribution balance equation and the minimum stage is 3 under the optimal purification condition.
Keywords: Graphite Oxide; Purification; Metal ions; Theoretical Stage; Orthogonal Experiment
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[Cited By]
  1. Liu L, You J, Zhu H, Tan W, Korean Journal of Chemical Engineering, 39(7), 1927, 2022
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