化学反应速率与平衡实验中碘的回收

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

对化学反应速率与化学平衡实验中碘废液的回收处理进行了研究。经分析发现,放置过一段时间的碘废液中碘的存在形式较简单,没有I-存在。对含碘溶液进行预处理后可直接选择升华方法进行碘的回收。该回收方法步骤简洁,操作方便,涉及仪器少,选择试剂价廉易得,绿色环保,所得碘单质回收率为96.1%,纯度达到98.9%。该实验可以作为教学实验或兴趣实验推广应用。

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.