Study on recovery P-cresol from simulated phenolic wastewater by precipitation method
P-cresol was recovered from simulated phenolic wastewater by precipitation.The effects of type of precipitants,precipitant dosage,temperature and pH value on P-cresol re-moval rate were investigated.The results showed that the best precipitant was barium chlo-ride and removal rate could reach 52.3%at 25℃and pH 14 when barium chloride dosage was 18 mL for 50 mL of 5 000 mg/L simulated phenolic wastewater.The precipitants were neutralized with dilute HCl and the free P-cresol was extracted with butyl acetate.The ex-traction efficiency reached 99.69%.The research provided ideas and methods for resource u-tilization of high concentration of phenolic wastewater.
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NSTL
万方数据
维普
