Study on the Recovery Efficiency of Acetic Acid in Wastewater by Different Extractants
In the process of chemical production,a large amount of acetic acid wastewater will be produced,and the direct discharge of acetic acid wastewater will pollute the environment,so it is necessary to recover the acetic acid in the wastewater to reduce environmental pollution and reduce production costs.In order to improve the efficiency of acetic acid recovery from wastewater,acetic acid wastewater with different concentrations was prepared,and three extractants,ethyl acetate,ether and petroleum ether,were used to extract acetic acid from wastewater.The efficiency of acetic acid extraction from wastewater was studied,and the effect of low content components of ethyl acetate on acetic acid extraction was also studied.The results showed that ethyl acetate had the best extraction effect on acetic acid in wastewater.When ethyl acetate was selected as extractant,the extraction temperature had little effect on acetic acid extraction in wastewater.When the initial concentration of acetic acid was 30％and the ratio of extractant to wastewater was 1.6:1,the extraction effect of ethyl acetate was the best.
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