Comprehensive Experimental Design of Preparation of Modified Fly Ash and Adsorption of Congo Red
An undergraduate teaching experiment was designed for the adsorption of Congo red in wastewater by modi-fied coal fly ash.In the experiment,fly ash was modified by roasting-hydrothermal method with KOH as activator.The structure of coal fly ash before and after modification was characterized by infrared spectrum.The adsorption perfor-mance of modified coal fly ash for Congo red in wastewater was studied.The experiment solves the problem of solid waste and alleviates the problem of water environment pollution.This experiment can improve students'ability of experi-mental operation and scientific research thinking.This experiment also can cultivate students'comprehensive practical ability,green environmental awareness and the concept of development of energy conservation,which lays a solid foun-dation for students to carry out further scientific research.
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