• 专利标题:   Preparation of icroalgae-based magnetic graphene and biochar used for removing heavy metal ions in waste water involves preparing magnetic graphene, adding biochar, pyrolyzing, washing, drying, mixing with cultured microalgae, and standing.
  • 专利号:   CN110947369-A
  • 发明人:   LU Y, WANG Y, ZHOU M, LIU C, WANG S
  • 专利权人:   HENAN YONGZE ENVIRONMENTAL TECHNOLOGY CO
  • 国际专利分类:   B01J020/24, B01J020/28, B01J020/30, C02F001/28, C02F101/20, C02F003/32
  • 专利详细信息:   CN110947369-A 03 Apr 2020 B01J-020/24 202034 Pages: 6 Chinese
  • 申请详细信息:   CN110947369-A CN11211439 30 Nov 2019
  • 优先权号:   CN11211439

▎ 摘  要

NOVELTY - Preparation of microalgae-based magnetic graphene and biochar comprises ultrasonically dispersing graphene in distilled water, adding iron(III) ion salt containing solution at room temperature, stirring for 45-60 minutes, adding iron(II) ion salt containing solution at 60-80 degrees C, stirring, reacting for 60-90 minutes, adding aqueous ammonia solution, stirring for 2 hours to adjust pH to not greater than 10, washing to neutrality, and vacuum-drying to obtain magnetic graphene; dispersing magnetic graphene, reducing agent and coupling agent in an organic alcohol aqueous solution, adding biochar, magnetic stirring for 1.5-2 hours, vacuum drying, pyrolyzing under nitrogen atmosphere at 500-700 degrees C for 1-2 hours, washing, and vacuum drying; and mixing with cultured microalgae and standing for 3-8 hours under light and nutrients conditions. USE - The method is used for preparing microalgae-based magnetic graphene and biochar for removing heavy metal ions in waste water (claimed).