Sub-4 nanometer porous membrane enables highly efficient electrodialytic fractionation of dyes and inorganic salts.

ABSTRACT: During the synthesis of dyes, desalination of high-salinity dye-containing waste liquor is a critical premise for high-quality, clean dye production. Conventional membrane processes, such as electrodialysis, nanofiltration and ultrafiltration, are inevitably subjected to serious membrane fouling, deteriorating the dye/salt fractionation efficacy. Integrating the technical merits of electrodialysis and pressure-driven membrane separation, we devise an electro-driven filtration process using a tight ultrafiltration membrane as alternative to conventional anion exchange membrane for rapid anion transfer, in view of dye desalination and purification. By employing a sub-4 nanometer tight ultrafiltration membrane as anion conducting membrane, the electro-driven filtration process achieves 98.15%

SUBMITTER: Lin J 

PROVIDER: S-EPMC12006429 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature