• 专利标题:   Membrane system for concentrating black liquor, has nanofiltration membrane removing lignin from black liquor and first polymer substrate and first graphene oxide membrane covering first polymer substrate respectively.
  • 专利号:   US2018071684-A1
  • 发明人:   NAIR S, KEVLICH N, RASHIDI F, SHOFNER M, SINQUEFIELD S, WANG Z
  • 专利权人:   GEORGIA TECH RES CORP
  • 国际专利分类:   B01D061/02, B01D063/06, B01D063/10, B01D071/02, D21C011/00
  • 专利详细信息:   US2018071684-A1 15 Mar 2018 B01D-061/02 201820 Pages: 17 English
  • 申请详细信息:   US2018071684-A1 US702536 12 Sep 2017
  • 优先权号:   US393226P, US702536

▎ 摘  要

NOVELTY - The membrane system has a nanofiltration membrane removing lignin from black liquor. The nanofiltration membrane has a first macroporous polymer substrate and a first graphene oxide membrane covering the first macroporous polymer substrate. The first macroporous polymer substrate has a polymer with aryl groups. The first macroporous polymer substrate comprises one of poly (sulfone) and poly (ethersulfone). USE - Membrane system for concentrating black liquor to remove lignin. ADVANTAGE - The membrane system can be resistant to high pH as well as resistance to fouling at transmembrane pressures of about specific bar. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for processing black liquor; and (2) a method for manufacturing a membrane system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of membrane system for fabricating a graphene oxide membrane.