University Chemistry ›› 2018, Vol. 33 ›› Issue (12): 71-75.doi: 10.3866/PKU.DXHX201805044

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Recycling Iodine in Waste Liquid from Chemical Reaction Rate and Equilibrium Experiment

Xiaoqin WANG*(),Xiao ZHANG,Ying YU,Xin YU   

  • Received:2018-05-29 Published:2018-12-14
  • Contact: Xiaoqin WANG E-mail:2215715281@qq.com
  • Supported by:
    中国石油大学(北京)"化学反应速率与化学平衡实验中碘的回收利用"及"大学化学(I)课程教学设计与改革"项目资助

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Abstract:

In this paper, the recovery of iodine effluent in chemical reaction rate and equilibrium experiment was studied. From the analysis, it could be found that the presence of iodine in the wastewater was relatively simple after three months and there was no I-. A sublimation method could be chosen directly to recycle the iodine after the pretreatment of the wastewater. The recycling method had simple steps and was easy to operate. It involved less equipment, is low cost, and more environmental friendly. The recovery rate of the obtained iodine element was 96.1% and the purity reached 98.9%. It can be used as a teaching experiment or interest experiment to promote applications.

Key words: Green chemistry, Chemical reaction rate, Wastewater containing iodine, Recovery of iodine