Recycling and Refining Benzoic Acid from Wastewater of the Preparation of Peroxidate

Methods of recycling benzoic acid was studied from wastewater of preparing peroxide of tert-butyl benzoate.The optimum conditions for recycling benzoic acid are as follows: PH 3.0,the aging time 10 min and the temperature 10 ℃.After recrystallizing under these conditions,the purity of benzoic acid is above 99%.