High flux and adsorption based non-functionalized hexagonal boron nitride lamellar membrane for ultrafast water purification

Rasel Das, Pablo Solís-Fernández, Daniel Breite, Andrea Prager, Andriy Lotnyk, Agnes Schulze, Hiroki Ago

研究成果: ジャーナルへの寄稿学術誌査読

11 被引用数 (Scopus)

抄録

Water pollution has prejudicial effects on human health and ecosystems. An advanced membrane technology, which uses less energy for pollutants removal from water, is strongly desired for improving cost efficiency. This study demonstrates a high-flux enabled non-functionalized hexagonal boron nitride (h-BN) lamellar membrane, which retains pollutants through adsorption mediated filtration system–a phenomenon that is not yet studied. The membrane is found to be pH responsive, and acidic solution increases anionic methyl orange (MO) and direct red-80 (DR-80) dyes retention up to ≥90%. It also improves permeance fluxes by ~15 and 61-folds for MO and DR-80, respectively, as compared with the previous studies. Next, the membrane qualifies to be a good adsorbent for pollutants removal. The maximum adsorption capacities of this h-BN membrane for bisphenol A, MO and DR-80 are 125.7, 120.8, and 328.2 mg g−1, respectively. Furthermore, the anti-fouling performance of the membrane has been studied. The membrane exhibits normal fouling tendency, but could be recovered to 80% after washing. The membrane is very stable, and no swelling is observed even in extremely high acidic and basic conditions. The membrane could be regenerated with ethanol treatment and retained dye removal efficiency (around 90%) after four consecutive cycles test.

本文言語英語
論文番号127721
ジャーナルChemical Engineering Journal
420
DOI
出版ステータス出版済み - 9月 15 2021

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 環境化学
  • 化学工学(全般)
  • 産業および生産工学

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