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US 12,465,894 B2Granted
Method for cleaning a fouled water purification membrane
AssigneeKing Fahd University of Petroleum and Minerals
InventorsUmair Baig, Abdul Waheed
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Abstract
A membrane including a polysulfone/polyethylene terephthalate (PSf/PET) support and an active layer on an outer surface of the PSf/PET support. The active layer comprises reacted units of a diacyl chloride compound, a tetra-amine compound, and a nanocomposite including graphitic carbon nitride and polypyrrole. The membrane of the present disclosure is self-cleaning following exposure to radiation and finds application in water decontamination and de-salination.
Claims16
A method for cleaning a fouled water purification membrane, comprising:
- irradiating the fouled water purification membrane with light having a wavelength of 400-700 nm to chemically degrade a pollutant present on the fouled water purification membrane and thereby form a photocatalytically active membrane;
- wherein the photocatalytically active membrane comprises a polysulfone/polyethylene terephthalate (PSf/PET) support;
- and
- an active layer on an outer surface of the PSf/PET support,
- wherein the active layer comprises reacted units of:
- a diacyl chloride compound;
- a tetra-amine compound;
- and
- a nanocomposite comprising a mixture of graphitic carbon nitride in the form of nanosheets and having triazine and heptazine rings and polypyrrole,
- wherein the photocatalytically active membrane has pores with an average diameter of less than 1 nm.
7 more elements
Dependencies are inferred from the claim text.