The invention relates to a continuous method for removing a solvent from a suspension or solution comprising a target polymer, wherein the method comprises the steps of delivering said suspension or solution to an extruder, wherein said extruder comprises a size classification unit that is designed to be permeable for the solvent and impermeable for the target polymer; and filtration and extrusion of said suspension or solution in said extruder. The invention also relates to a plastic waste recycling system for recycling a target polymer. Furthermore, the invention also relates to a polymer material obtained by this recycling method.

Apparatus, methods, systems, etc., for the tangential flow filtration (TFF) of viscous compositions including viscous fluids, solutions, gels, pastes, creams and suspensions with viscosities greater than 10 cP, 20 cP, 50 cP or 100 cP. The methods, etc., provide enhanced mixing of the viscous compositions in their storage vessels by extracting the input composition from different depths in the storage vessels to reduce or eliminate vertical concentration gradients.

A device, system and method for the detection and screening of plastic microparticles in a sample is disclosed. A nanoporous silicon nitride membrane is used to entrap plastic microparticles contained in the sample. The sample may be a water sample, an air sample, or other liquid or gas sample. The entrapped plastic microparticles are then heated or otherwise processed on the nanoporous silicon nitride membrane. An imaging system observes the nanoporous silicon nitride membrane with tic entrapped plastic microparticles to determine the type and quantity of the various plastic microparticles that are entrapped on the membrane.

A device, system and method for the detection and screening of plastic microparticles in a sample is disclosed. A nanoporous silicon nitride membrane is used to entrap plastic microparticles contained in the sample. The sample may be a water sample, an air sample, or other liquid or gas sample. The entrapped plastic microparticles are then heated or otherwise processed on the nanoporous silicon nitride membrane. An imaging system observes the nanoporous silicon nitride membrane with tic entrapped plastic microparticles to determine the type and quantity of the various plastic microparticles that are entrapped on the membrane.

The filter system having a filter and a filter holder, wherein the filter is connected to an upper and a lower filter cap, wherein on the circumference of the filter caps a cross-sectionally T-shaped fixing aid is respectively mounted, having a laterally projecting transverse web, which are vertically aligned with each other, wherein on an outer side of the housing of the filter holder two filter fixings are mounted with grooves in which the transverse webs can be suspended, is characterized in that four hydraulic ports project laterally from the filter and/or the filter caps, which are vertically aligned with each other, and that the filter holder has four connection connectors, which can be advanced by an upper and a lower closure mechanism against spring force until they engage in an end position in which the connection connectors are tightly connected to the hydraulic connections.

A membrane separation pretreatment apparatus including a membrane separation unit and a first underwater plasma discharge unit disposed in front of the membrane separation unit is provided. The membrane separation pretreatment apparatus includes a membrane separation unit configured to remove particulate matter contained in raw water, and a first underwater plasma discharge unit disposed in front of the membrane separation unit and configured to cause a portion of the raw water to be introduced into the membrane separation unit to perform underwater plasma discharging.

Processes for the production of bags containing saline solution. The processes include sealing bags with crystalline components and then sterilizing the sealed bags with crystalline components. The bags may be sterilized in an autoclave and then transported to a consumption site which produces water-for-injection (WFI) suitable for use in an IV bag. The WFI is added to the sterilized bags, dissolving the solid salt (USP-grade sodium chloride), to produce a bag with a 0.9 w/v % normal saline solution.

Processes for the production of bags containing saline solution. The processes include sealing bags with crystalline components and then sterilizing the sealed bags with crystalline components. The bags may be sterilized in an autoclave and then transported to a consumption site which produces water-for-injection (WFI) suitable for use in an IV bag. The WFI is added to the sterilized bags, dissolving the solid salt (USP-grade sodium chloride), to produce a bag with a 0.9 w/v % normal saline solution.

A conventional media filter such as a gravity sand filter is converted into a membrane filter. The media is removed and replaced by immersed membrane modules. Transmembrane pressure is created by a static head pressure differential, without a suction pump, thereby creating a membrane gravity filter (MGF). Preferred operating parameters include transmembrane pressure of 5-20 kPa, 1-3 backwashes per day, and a flux of 10-20 L/m.sup.2/h. The membranes are dosed with chlorine or another oxidant, preferably at 700 minutes*mg/L as Cl.sub.2 equivalent per week or less. The small oxidant does is believed to provide a porous biofilm or fouling layer without substantially removing the layer. The media filter may be modified so that backwash wastewater is removed from near the bottom of the tank rather than through backwash troughs above the membrane modules. Membrane integrity testing may be done while the tank is emptied after a backwash.

A conventional media filter such as a gravity sand filter is converted into a membrane filter. The media is removed and replaced by immersed membrane modules. Transmembrane pressure is created by a static head pressure differential, without a suction pump, thereby creating a membrane gravity filter (MGF). Preferred operating parameters include transmembrane pressure of 5-20 kPa, 1-3 backwashes per day, and a flux of 10-20 L/m.sup.2/h. The membranes are dosed with chlorine or another oxidant, preferably at 700 minutes*mg/L as Cl.sub.2 equivalent per week or less. The small oxidant does is believed to provide a porous biofilm or fouling layer without substantially removing the layer. The media filter may be modified so that backwash wastewater is removed from near the bottom of the tank rather than through backwash troughs above the membrane modules. Membrane integrity testing may be done while the tank is emptied after a backwash.