• 专利标题:   Filtration apparatus for processing black liquor feed, comprises graphene oxide film provided on support substrate, where graphene oxide film including graphene oxide sheets, where each of graphene oxide sheets covalently coupled to chemical spacer.
  • 专利号:   US2023173435-A1
  • 发明人:   KELLER B, ORTIZ R L, MACDONALD B I, MACLEOD M, FRAYNE S
  • 专利权人:   VIA SEPARATIONS INC
  • 国际专利分类:   B01D067/00, B01D069/10, B01D071/02
  • 专利详细信息:   US2023173435-A1 08 Jun 2023 B01D-071/02 202349 English
  • 申请详细信息:   US2023173435-A1 US960440 05 Oct 2022
  • 优先权号:   US848014P, US960440

▎ 摘  要

NOVELTY - Filtration apparatus comprises a support substrate, and a graphene oxide film provided on the support substrate, where the graphene oxide film including graphene oxide sheets, where each of the graphene oxide sheets covalently coupled to a chemical spacer (120), each of the graphene oxide sheets is not covalently crosslinked to other graphene oxide sheets form graphene oxide sheets, the graphene oxide film has a lignin rejection rate of 50% with a black liquor feed containing 10 wt.% total dissolved solids at a temperature of 50℃ and a pressure of 200 psi. USE - Filtration apparatus used for processing black liquor feed. ADVANTAGE - The filtration apparatus improves flux and/or rejection rate of the graphene oxide film as compared to a rough support substrate. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a filtration apparatus. 100Graphene oxide film 110Graphene oxide sheets 120Chemical spacers