Disclosed is a method of improving the effectiveness of an oxygen removal unit for a fuel supply system. The method includes contacting a tube bundle with a repair liquid at 20 to 40° C. for less than two hours. The tube bundle includes tubes having an air permeable, non-porous polymer layer with discontinuities. The repair liquid includes a solvent and a curable thermoset material. The curable thermoset material is deposited in the discontinuities of the air permeable, non-porous polymer layer and cured. Also disclosed is a fuel system oxygen removal unit including a tubular bundle formed of tubes having an air permeable, non-porous polymer layer disposed on a microporous support wherein the air permeable, non-porous polymer layer includes discrete segments of a cured thermoset material.

A hydrogen-selective membrane including a metal leaf applied to a substrate. A system and method for fabricating a hydrogen-selective membrane, including applying a metal leaf to a substrate, annealing the metal leaf, applying a hydrogen-permeable metal to the annealed metal leaf on the substrate, and annealing the hydrogen-permeable metal and the annealed metal leaf to give an alloy of the hydrogen-permeable metal and the metal leaf. A system and method for repairing a hydrogen-selective membrane having defects including applying a metal leaf to an external surface of membrane material of the hydrogen-selective membrane, annealing the metal leaf and metal of the membrane material to form an alloy of the metal leaf and the metal to repair the defects.

Disclosed is a method of improving the effectiveness of an oxygen removal unit for a fuel supply system. The method includes contacting a tube bundle with a repair liquid at 20 to 40° C. for less than two hours. The tube bundle includes tubes having an air permeable, non-porous polymer layer with discontinuities. The repair liquid includes a solvent and a curable thermoset material. The curable thermoset material is deposited in the discontinuities of the air permeable, non-porous polymer layer and cured. Also disclosed is a fuel system oxygen removal unit including a tubular bundle formed of tubes having an air permeable, non-porous polymer layer disposed on a microporous support wherein the air permeable, non-porous polymer layer includes discrete segments of a cured thermoset material.

A method for healing a damaged separation membrane for water treatment uses silica microparticles surface-functionalized with polyethyleneimine. The method can be applied to actual water treatment processes because the particle size and chemical stability of the silica microparticles surface-functionalized with polyethyleneimine are maintained under various operation conditions are used. A separation membrane for water treatment healed exhibits superior healing performance, with water permeability and rejection rate being healed to 90% or higher as compared to the pristine separation membrane, and maintains physical and chemical stability for a long time. Moreover, the method is advantageous in that flux does not declines after the healing because the silica microparticles surface-functionalized with polyethyleneimine are selectively deposited on the damaged part. In addition, it is advantageous in terms of economy in that silica microparticles commercially available at low cost are used.

A method for the repair of defects in a graphene or other two-dimensional material through interfacial polymerization.

This repair method for a hollow fiber membrane module is a method for repairing a leaking section occurring in the hollow fiber membrane module, the repair method having a repair step for using a repair adhesive that hardens due to a composite curing function that comprises a moisture-curing function and a photo-curing function, to repair the leaking section.

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material.

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material.

A method for manufacturing a self-healing hydrogel-filled separation membrane for water treatment includes soaking a porous support comprising pores in a monomer solution to fill the pores with the solution, removing the excessively filled monomer solution from the porous support, and forming a hydrogel in the pores by crosslinking the monomer. The separation membrane does not require an additional repair process when damage occurs to the separation membrane and can exhibit superior self-healing effect and physical stability.

A method for repairing a membrane filtration module in fluid communication with a plurality of additional membrane filtration modules includes fluidly connecting a fluid transfer assembly to the membrane filtration module, fluidly isolating the membrane filtration module from the plurality of additional membrane filtration modules, forcing liquid within the membrane filtration module into the fluid transfer assembly by introducing a pressurized gas into the membrane filtration module, releasing the pressurized gas from the membrane filtration module, fluidly disconnecting the fluid transfer assembly from the membrane filtration module, repairing one or more damaged membranes in the membrane filtration module, and fluidly reconnecting the membrane filtration module to the plurality of additional membrane filtration modules.