• 专利标题:   Method for removing endocrine disrupter in water, involves iron-cerium composite oxide graphene material, adjusting pH, reacting to obtain cerium-containing iron oxide graphene composite aqueous solution, filtering, and drying.
  • 专利号:   CN104667871-A, CN104667871-B
  • 发明人:   GUO H, LIU Y, YANG Y, ZHANG Y, LIANG D
  • 专利权人:   UNIV SICHUAN
  • 国际专利分类:   B01J020/20, B01J020/30, C02F001/28
  • 专利详细信息:   CN104667871-A 03 Jun 2015 B01J-020/20 201606 Pages: 10 Chinese
  • 申请详细信息:   CN104667871-A CN10073668 11 Feb 2015
  • 优先权号:   CN10073668

▎ 摘  要

NOVELTY - Method for removing endocrine disrupter in water involves mixing monopersulfate and pretreated water, stirring, adding perchlorate and sodium hydroxide solution, adjusting pH, adding graphene oxide to ethylene glycol solution, adding sodium citrate, heating, adding ferric chloride hexahydrate, urea and cerium chloride hexahydrate, reacting, cooling to obtain black suspension, centrifuging, washing, drying to obtain iron-cerium composite oxide graphene material, adjusting pH, reacting to obtain cerium-containing iron oxide graphene composite aqueous solution, filtering, and drying. USE - Method for removing endocrine disrupter in water (claimed). ADVANTAGE - The method enables efficient and economical removal of endocrine disrupter in water at a rate of 88-97%. DETAILED DESCRIPTION - Method for removing endocrine disrupter in water involves mixing monopersulfate and pretreated water at room temperature, stirring at rate of 160-250 rpm for 20-45 minutes, adding 0.1-100 mol/L perchlorate and 0.1-100 mol/L sodium hydroxide solution to the reaction mixture, adjusting pH of the mixed solution to 6.5-7.5, adding graphene oxide to 97-99 %mass ethylene glycol solution, dispersing by ultrasonic vibration analyzer for 3-4 hours, adding sodium citrate, heating at 60-75 degrees C for 20-45 minutes, adding ferric chloride hexahydrate, urea and cerium chloride hexahydrate, magnetically stirring at room temperature for 2-4 hours, adding the reaction mixture into polytetrafluoroethylene-coated stainless steel autoclave, reacting at 200-230 degrees C for 12-48 hours, cooling to room temperature to obtain black suspension, centrifuging the black suspension at a rate of 6500-8000 rpm for 10-30 minutes, washing the precipitate with methanol and deionized water, drying at -18 degrees C to 15 degrees C for 24-48 hours to obtain iron-cerium composite oxide graphene material, adjusting pH, reacting for 15-240 minutes to obtain cerium-containing iron oxide graphene composite aqueous solution, separating, recycling, filtering, and drying at 50-75 degrees C for 12-48 hours. The monopersulfate is potassium monopersulfate, ammonium monopersulfate, sodium monopersulfate and/or calcium monopersulfate. The mass ratio of monopersulfate and pretreated water is 1:1000-10000. The mass ratio of graphene oxide and ethylene glycol solution is 0.001-10 g:1 mL. The mass ratio of mixed solution of sodium citrate and ethylene glycol with respect to ferric chloride hexahydrate is 1-1000 mL:1 g. The mass ratio of ferric chloride hexahydrate and urea is 0.01-100:1. The ferric chloride hexahydrate and cerium chloride hexahydrate is 0.01-1000:1.