University Chemistry ›› 2020, Vol. 35 ›› Issue (12): 221-226.doi: 10.3866/PKU.DXHX201911019

• Chemistry Laboratory • Previous Articles     Next Articles

Recovery and Effect Evaluation of Laboratory Waste Liquid: Taking "Recovery and Evaluation of Chromium Waste Liquid" as an Example

Hongyu Liu1,*(), Xinhui Guo2, Juncheng Chen3, Aobo Song2, Gu Jin2, Qizhi Yao1, Jiao Li1, Lingling Li1   

  1. 1 National Demonstration Center for Experimental Chemistry Education(University of Science and Technology of China), Hefei 230026, P. R. China
    2 School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, P. R. China
    3 School of the Gifted Young, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:2019-11-12 Accepted:2019-11-18 Published:2019-11-29
  • Contact: Hongyu Liu E-mail:liuhyhx@ustc.edu.cn

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Abstract:

This paper introduces an experiment about waste liquid recovery and effect evaluation in laboratory. Through this experiment, the basic operations of crystal preparation, chemical analysis and instrumental analysis are further consolidated. At the same time, it allows students to experience a series of possible problems of condition selection and control in the process of waste liquid treatment. We hope to improve the students' ability to analyze and solve problems, enhance their interest in learning, and strengthen their humanistic education.

Key words: Waste liquid recovery, Basic operation, Enhance interest, Humanistic education