A water filtration device is provided including a pressurized gas chamber receiving a pressurized gas; an open flow chamber receiving a colloidal suspension including water and colloidal particles, the open flow chamber having an inlet and an outlet, the colloidal suspension flowing between the inlet and at least one outlet in a flow direction; and a gas permeable membrane separating the gas chamber and the flow chamber, the gas capable of permeating the membrane, the membrane being water impermeable, the gas permeating the membrane in a direction normal to the membrane so as to induce diffusiophoretic motion on at least some of the colloidal particles opposite to or in a direction normal to the membrane; the at least one outlet having a first outlet with water having a higher concentration of the colloidal particles than a second outlet. Other devices and methods are also provided.

A bag filter arrangement for being arranged in a bag filter holder, comprising a bag filter having an end portion encompassing an open end of the bag filter, a bag filter seal for sealing against the bag filter holder, the bag filter seal being arranged to hold the bag filter, the bag filter seal comprising a bag filter facing surface, and wherein the bag filter seal comprises a recess on the bag filter facing surface, the recess being arranged to receive the open end portion of the bag filter.

An environmental control assembly includes a housing including a base layer, a diffusor layer, and an interior space at least partially formed by the base layer and the diffusor layer. The environmental control assembly further includes a desiccant positioned within the interior space and an inlet filter that is formed from a cutout in the base layer that is covered by the diffusor layer.

A mixed powder and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320 C. that is not fibrillated. The non-hot melt processable component that is not fibrillated is contained in a range of 20 to 40% by weight of the total weight. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of the total weight. A drawn porous body includes a plurality of fibrils, and a plurality of knotted portions that are connected to each other by the fibrils.

A filtering medium includes first and second porous membranes mainly composed of fluororesin, and a plurality of air permeable supports to support the first and second membranes. The second membrane is disposed downstream of the first membrane. When air containing polyalphaolefin particles with a count median diameter of 0.25 ?m is continuously passed through at a flow rate of 5.3 cm/sec and pressure loss is increased by 250 Pa, the first membrane has a dust retention amount larger than the second membrane. The filtering medium has a pressure loss of less than 200 Pa when air is passed through at a flow rate of 5.3 cm/sec. A collecting efficiency of NaCl particles with a particle diameter of 0.3 ?m is 99.97% or more when air containing the NaCl particles is passed through at a flow rate of 5.3 cm/sec. The dust retention amount is 25 g/m.sup.2 or more.

A system for a vehicle includes a water separator and a particulate filter. The vehicle includes an engine that emits exhaust, and the water separator and the particulate filter are disposed downstream of the engine and receives at least a portion of the exhaust. The water separator separates water from the exhaust, and the particulate filter filters particulates of the exhaust such that the water may be subsequently used, e.g., for potable uses, operation of the engine, etc.

A filter baffle assembly, including a filter cap engageable to a mouth of a container, the filter cap including a filter vent operatively attached to a liner situated within an inner space of the filter cap, and a gas permeable baffle disposed between a mouth of the container and the filter vent, covering the filter vent, the baffle including a single perforation to permit gas exchange between an interior of the container and the filter vent, and to protect the filter vent from contact with contents housed in the interior of the container. A gas permeable point baffle for protecting a filter vent from contact with the contents of a container, including a single perforation, the point baffle being welded to a liner and covering a filter vent operatively attached to the liner, housed within a cap engageable to the mouth of the container. A method for protecting a filter vent from the contents of a container.

A scent releasing filter assembly for enhancing an odor of a building includes a filter that may be positioned in an air supply of an HVAC system to filter air that is urged through the air supply. A chemical scent is infused into the filter. The chemical scent is released into the air urged by the HVAC system thereby enhancing an odor of a building.

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.

The present disclosure is directed at a vehicular air filter with relatively high efficiency particle arresting performance along with removal of volatile organic and/or inorganic contaminants. The filter is particularly suitable for hybrid type vehicles.