• 专利标题:   Manufacture of ion exchange membrane used in electrodialysis cell, involves dissolving polymer with solvent, placing solution in ultrasonic shaker, adding exchange resin, scattering solution on glass plate and phase inversion processing.
  • 专利号:   BR102020021119-A2
  • 发明人:   DE RESENDE M M, CARDOSO V L, SILVA RODRIGUES M, SANTOS MOREIRA F
  • 专利权人:   UNIV FEDERAL UBERLANDIA
  • 国际专利分类:   B01D061/42, B01D067/00, B01D071/16, B01D071/34, B01D071/48, B01D071/68
  • 专利详细信息:   BR102020021119-A2 26 Apr 2022 B01D-067/00 202252 Pages: 16
  • 申请详细信息:   BR102020021119-A2 BR10021119 15 Oct 2020
  • 优先权号:   BR10021119

▎ 摘  要

NOVELTY - Manufacture of ion exchange membrane involves dissolving 15-25% (w/w) polymer with 75-85% (w/w) solvent under mechanical stirring at room temperature, placing the solution in an ultrasonic shaker for 30 minutes, incorporating 3-6 %mass exchange resin, scattering the resultant solution on a glass plate and carrying out phase inversion process to obtain films. USE - Manufacture of ion exchange membrane used in electrodialysis cell for removing heavy metals in contaminated effluents. ADVANTAGE - The method produces ion exchange membrane having excellent surface charge density, selectivity, electrical resistance, mechanical and dimensional stability, high permeability to counter-ion and high chemical stability.