Each cell is pressurized with gas from outside of the cell, the amount of permeation of the gas permeated into each cell is measured, and a cell having the amount of permeation greater than (average value of all cells+A) (wherein A is a predetermined value of ? to 6?, where ? is the standard deviation) is considered to be defective. Alternatively, pressure is reduced for each cell, the degree of vacuum in each cell is measured, and a cell having the degree of vacuum worse than (average value of all cells+A) is considered to be defective. Then, a polymer compound is poured into the defective cells of the monolithic separation membrane structure and cured so that the defective cells are sealed. Alternatively, the polymer compound formed in advance as the sealing member is inserted into the defective cells to seal the defective cells.

A crossflow filter device for filtering a pressurised feed liquid is provided. The crossflow filter device comprises: a filter membrane; a flow channel for the pressurised feed liquid which extends in a path over a retentate surface of the membrane such that the direction of flow in the channel is tangential to the retentate surface, and a filtrate derived from the feed liquid passes through the membrane leaving retentate liquid in the flow channel; and a collection chamber for the filtrate formed on an opposite, filtrate surface of the membrane. The crossflow filter device further comprises a sealed housing having a retentate side and a filtrate side which enclose therebetween the flow channel, the filter membrane and the collection chamber. The crossflow filter device further comprises, flow channel guide walls provided at an inner surface of the retentate side of the housing. The guide walls are configured to form a fluid tight seal with the filter membrane, and thereby define the path of the flow channel over the retentate surface of the membrane.

The invention relates to a method for producing a membrane module, comprising a plurality of elongated filter elements disposed in parallel adjacent to one another, each element comprising a longitudinal channel, a housing enclosing the filter elements, and a collector chamber between the housing and the filter elements.

This disclosure provides, among other things, a filtration device comprising an open bottomed multi-well plate, a planar spacer that comprises apertures, and a porous capillary membrane. In the device, the planar spacer is sandwiched between the multi-well plate and the porous capillary membrane and the planar spacer is bonded to both the multi-well plate and the porous capillary membrane via an adhesive. Kits and methods of making the device are also provide.

A separation membrane structure comprising a porous support, a first glass seal, and a separation membrane. The porous support includes through-holes which connect a first end surface and a second end surface. The first glass seal is configured to cover the first end surface. The separation membrane is formed on an inner surface of the through-holes. The first glass seal has a first seal body part and a first extension part. The first seal body part is disposed on the first end surface. The first extension part is connected to the first seal body part and disposed on the inner surface of the through-holes. The separation membrane has a first connection part connected to the first extension part of the first glass seal. A first thickness of the first connection part is less than or equal to 10 microns, and less than or equal to 3.2 times a center thickness at a longitudinal center of the separation membrane.

A method for forming a ceramic membrane module system includes disposing at least one membrane within a housing, disposing at least one sealing pad adjacent to the membrane, and disposing at least one drive plate assembly adjacent to the at least one sealing pad. The method further includes coupling the at least one drive plate assembly with the housing, applying force to the sealing pad with the drive plate assembly, sealing the capillaries of a membrane end with the at least one sealing pad and forming a seal between the at least one sealing pad and the membrane, and disposing potting material into the housing without plugging more than 15% of the capillaries with the potting material.

A method for forming a ceramic membrane module system includes disposing at least one membrane within a housing, where the membrane has capillaries therein. The method includes sealing the first housing end and capillaries, applying force to the removable gasket with an inflatable bladder assembly or piston assembly, and disposing potting material into the housing without plugging the capillaries with the potting material.

A filter assembly adapted for insertion into an inner chamber of a pressure vessel, wherein the assembly includes: a spiral wound membrane module (2) comprising at least one membrane envelope (4) and feed spacer sheet (6) concentrically wound about a central permeate tube (8) extending along an axis (X) forming an inlet scroll face (30) and outlet scroll face (32) and a cylindrical outer peripheral surface (38), an end cap (33) having a surface (72) covering a portion of the inlet scroll face (30) and at least one opening (76) in the end cap surface (72) near the permeate tube for permitting fluid to flow through the inlet scroll face (30) and into the feed spacer sheet (6) of the module (2), and a brine seal (65) having a radially extending flexible lip (70) defining a maximum outer diameter adapted to engage the inner chamber of the pressure vessel; wherein the brine seal is sealed to the end cap (33).

A process for preparing a membrane stack comprising the steps of: (i) interposing a curable adhesive between alternate anion exchange membranes and cation exchange; and (ii) curing the adhesive; CHARACTERIZED IN THAT said adhesive, when cured, has a Shore A hardness of less than 70 and an elongation at break of at least 50%.

A membrane assembly for the permeative separation of a fluid from fluid mixtures includes a porous, fluid-permeable, metallic support substrate, a membrane that is disposed on the support substrate and is selectively permeable to the fluid to be separated off, and a connecting part which is formed, at least on the surface, of a fluid-tight, metallic material. The support substrate is cohesively bonded along a peripheral section thereof to the connecting part. A ceramic, fluid-permeable, porous, first intermediate layer is disposed between the support substrate and the membrane. At least one ceramic bonding layer is disposed directly on the connecting part and the material bond and extends at least over the cohesive material bond and an adjoining section of the connecting part. The first intermediate layer ends on the bonding layer and has a greater average pore size than the bonding layer.