Objective:To optimize extraction technology of shikimic acid from wastewater

which was produced after volatile oil was extracted from leaves and stems of Star Anise.Method:With the content of shikimic acid as index

orthogonal tests were adopted to optimize technology conditions for removing impurities and pigments by lime paste and powdered activated carbon

then wastewater was enriched by resin 201×7（717） anion exchange resin column

eluted by 1%HCl

collected eluate

concentrated to receive crude products;The crude products was recrystallized by acetic acid

obtained shikimic acid products.Result:Optimum impurity removal process of lime paste was as following:added 5% lime paste as per the westewater volum

incubated for 20 min at 60 ℃ after mixing;Optimum impurity removal process of activated carbon was:added 5% as per the westewater volum incubated for 60 min at 50 ℃ after mixing

operation at any pH.The average yield and purity of shikimic acid were 37.60%

98.84%

respectively.Conclusion:This optimized technology was simple and feasible by deal with wastewater effectively

and it was suitable for industrial production.