• 专利标题:   Preparing sludge biological adsorption material useful for removing fluorine comprises pyrolyzing dried sludge powder, mixing sludge biological carbon and potassium acetate, mixing aluminum chloride and cerium chloride, dropping sodium hydroxide solution, drying and crushing.
  • 专利号:   CN113750966-A, CN113750966-B
  • 发明人:   TONG L, SONG M, LI S, YE C
  • 专利权人:   UNIV NANTONG
  • 国际专利分类:   B01J020/20, B01J020/30, C02F001/28, C02F101/14
  • 专利详细信息:   CN113750966-A 07 Dec 2021 B01J-020/20 202244 Chinese
  • 申请详细信息:   CN113750966-A CN11164459 30 Sep 2021
  • 优先权号:   CN11164459

▎ 摘  要

NOVELTY - Preparing sludge biological adsorption material comprises (a) pyrolyzing the dried sludge powder for 40-60 minutes at 600-650degrees Celsius to obtain the sludge biological carbon, (b) mixing the sludge biological carbon and potassium acetate in a mass ratio of 1:0.5-2, pyrolyzing for 40-60 minutes under 600-650degrees Celsius, centrifuging, washing, drying, crushing to obtain the sludge-based biological carbon, (c) dissolving the aluminum chloride and cerium chloride in the deionized water to obtain the mixed solution, mixing with the sludge-based biological carbon and (d) dropping sodium hydroxide solution into the mixed solution, adjusting the pH value of the solution to 7-7.5, stirring for 10-12 hours, centrifuging, washing, drying and crushing to obtain the sludge biological absorbing material. USE - The material is useful for removing fluorine (claimed). ADVANTAGE - The material has removal efficiency more than 80% and the adsorption capacity of 80-110 mg/g, when fluoride is adsorbed. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a sludge biological absorbing material for removing fluorine prepared by the above preparation method.