Abstract: A pair of waveform disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid into an expansion chamber and then through at least a portion of a waveform pattern present between at least two disks. The disks having waveform patterns on at least one side.

Abstract: An underwater debris suction apparatus includes a power device and a filter device. The power device includes a suction component and a power drive device configured to provide power for the suction component. The underwater debris suction apparatus further includes a collection device, and the upper end of the collection device is provided with an opening. The suction component is at least partially located above the filter device or is entirely located in the space of the filter device. During operation of the suction component, unfiltered pool water enters the filter device through a water inlet channel and flows to the side wall of the filter device, so that the filtered water is discharged from the side wall of the filter device, and the debris that cannot be discharged from the side wall of the filter device falls into the collection device.

Abstract: A reverse osmosis (1) system having a first membrane unit (2) and at least a second membrane unit (3), the membrane units (2, 3) forming a chain of membrane units, the first membrane unit (2) having a first membrane (4) separating a first feed chamber (5) and a first permeate chamber (6), a first inlet (7) connected to the first feed chamber (5), a first permeate outlet (9) connected to the first permeate chamber (6), and a first concentrate outlet (8) connected to the first feed chamber (5), the second membrane unit (3) having a second membrane (10) separating a second feed chamber (11) and a second permeate chamber (12), a second inlet (13) connected to the second feed chamber (11), a second permeate outlet (15) connected to the second permeate chamber (12), and a second concentrate outlet (14) connected to the second feed chamber (11), wherein the concentrate outlet (8) of a membrane unit (2) in the chain of membrane units is connected to an inlet (13) of a following membrane unit (3) and a concentrate out

Abstract: Methods and systems of lowering a concentration of divalent cations in lithium-containing brines are described. A method includes diluting saturated salar brine such that sodium chloride concentration is at most about 80% of saturation. The method also includes feeding the diluted salar brine to a high pressure nanofiltration system operating at pressure above about 60 bar effective to form a permeate and a concentrate. The method also includes collecting the permeate having a lower concentration of divalent cations relative to the saturated salar brine.

Abstract: A mixing aerator is disclosed that includes a housing defining a chamber having a bottom end and a top end, the housing having at least one inlet and at least one outlet; and a longitudinally extending diffuser disposed within the chamber and configured to deliver air bubbles into the chamber when the chamber is filled with liquid. The diffuser includes (a) a tubular elastomeric membrane having a plurality of perforations and, within the tubular elastomeric membrane, (b) an air pipe having a plurality of openings, the openings being larger and fewer than the perforations, and the tubular membrane having upper and lower ends that are sealed against an outer surface of the air pipe.

Abstract: Blood is conveyed from a source into a separator, which separates at least one target blood component from the blood. The target blood component is then conveyed out of the separator, with the procedure continuing until an initial target amount of blood to be processed has been conveyed from the source into the separator and the target blood component separated from the initial target amount of blood to be processed has been conveyed out of the separator as an actual yield of the target blood component. An adjusted target amount of blood to be processed is then determined based at least in part on the difference between a target yield of the target blood component and the actual yield. The initial target amount of blood to be processed is then replaced with the adjusted target amount of blood to be processed when next executing the procedure.

Abstract: A method for preparing a plant derived product or a process intermediate or a process input, the method comprising the steps of providing a plant derived starting material, subjecting the starting material to a forward osmosis step against a draw solution so as to produce a plant material concentrate, and subjecting the draw solution to a water removal step. The water removal step may include further forward osmosis in combination with an evaporator system.

Abstract: Droplet-interface bilayer and lipid bilayer membrane compositions stabilized with an amphiphilic polymer are disclosed. Methods of making and using the compositions are also disclosed.

Abstract: A lamella for a clarifier, including a plate provided with longitudinal straight ribs extending from the top part of the plate to the bottom edge, and longitudinal straight folds provided with wings and which are interposed between each pair of ribs to form projections with V-shaped walls that project in the sagittal direction. A top transverse fold provided in the top part, which defines a flat portion extending backwards towards a top edge. A bottom transverse fold that curves the bottom part backwards.

Abstract: A portable filtration system is described. The system may comprise: a mixing portion, comprising: a pump adaptor and a contaminant regulator. The pump adaptor may comprise: an upper plate, a lower plate, and a screen. The screen may axially extend between the upper and lower plates, wherein the upper plate, the lower plate, and the screen define a channel of a mixing chamber. The contaminant regulator may comprise a through-passage coupled to the upper plate, wherein the through-passage is in fluid communication with the mixing chamber.

Abstract: A sealing element (5) for a filter element (2) in a housing body (1) of a filtration device, preferably in a cross-flow filtration device. The sealing element (5) is of one-piece annular design and comprises a section for the sealing arrangement of the filter element (2) in the housing body (1) and a section for stop damping the filter element (2).

Abstract: The disclosure relates to a dental debris separator having a housing in the upper region of which a drainage zone for removing particle-containing liquid from an air flow which is loaded with the liquid. The housing has an inlet for the loaded air flow, leading tangentially into the drainage zone. Downstream of the drainage zone a separation zone for removing the particles from the particle-containing liquid is provided in the housing, said separation zone descending from the drainage zone to the separation zone, the drainage zone having a curved flow path that is delimited on its lower side by a crown of baffle elements.

Abstract: Aspects of the present disclosure relate to a method of regenerating a hydrophobic interaction chromatography column to which a load mass has been applied, the method comprising passing one or more column volumes of an alkaline solution through hydrophobic interaction media within the column, wherein the alkaline solution exhibits a pH of between about 10 and about 14, and a conductivity of between 0.5 mS/cm and about 10 mS/cm, wherein material bound to the hydrophobic interaction media is removed. In some cases, the alkaline solution may include sodium hydroxide at a concentration of between, e.g., about 0.1 mM and 10 mM.

Abstract: There is provided a chromatography system comprising a first valve in fluid connection to a first chromatography column and/or a second valve; the second valve in fluid connection to a second chromatography column and the first valve; wherein the first valve and the second valve are operable to provide: a mode that selectively allows a fluid to flow from the first chromatography column to the second chromatography column; and one or more modes that selectively allows the fluid to bypass the first chromatography column and/or the second chromatography column. Also disclosed is a method of capturing and/or purifying a target from a sample thereof. In one embodiment, an acidic protein, alpha-1 anti-trypsin (A1AT), is purified by a tandem column configuration using anion exchange chromatography, whereby a first chromatography column is added in between the sample pump and an injection valve, or replaced the sample loop of AKTA system.

Abstract: A system for generating electricity and/or providing potable water. The system includes a subterranean shaft that extends into a geothermal reservoir and a volume of heat transfer fluid. Heat from the geothermal reservoir is transferred through a wall of the shaft and into the heat transfer fluid. The system includes a water intake conduit extending from the surface of the earth into the shaft interior. The water intake conduit includes proximal and distal ends and downward, return and upward portions. At least the return portion is positioned in the heat transfer fluid. Liquid water received through the proximal end of the water intake conduit moves downwardly along the downward portion and below the heat transfer fluid level. The liquid water is converted to steam via heat transfer from the heat transfer fluid through a wall of the water intake conduit. The steam moves upwardly along the upward portion of the water intake conduit and into the electrical generation stage, where electricity is generated.

Abstract: A skimmer (1) for aquariums comprises a base (10) and a container (20) which is provided with at least two lateral connectors (21, 22) which comprise a main connector (22) and an auxiliary connector (21). The skimmer further comprises a cup (30), in which the foam is collected. The base comprises at least four openings, a first opening (11) and a second opening (12) opening inside the container (20) and being connected to a third opening (13) and a fourth opening (14), respectively, so that the skimmer can operate at least in two different configurations: a first single-pump configuration and a second double-pump configuration.

Abstract: A system for separating competing anions from per- and polyfluoroalkyl substances (PFAS) in a flow of water contaminated with PFAS and elevated levels of competing anions that includes a separation subsystem which receives the flow of water contaminated with PFAS and elevated levels of competing anions and separates competing anions from the PFAS and concentrates the PFAS to produce a treated flow of water having separated competing anions therein and a flow of water having a majority of PFAS therein. At least one anion exchange vessel having an anion exchange resin therein receives the flow of water having a majority of PFAS therein and removes PFAS from the water to produce a flow of treated water having a majority of the PFAS removed. The separation of competing anions by the separation subsystem increases the treatment capacity of the anion exchange resin to remove PFAS from the contaminated water.

Abstract: Disclosed is a method of preparing a filtration membrane. The method includes providing a copolymer solution by dissolving a statistical copolymer in a mixture of a co-solvent and a first organic solvent, coating the copolymer solution onto a porous support layer to form a polymeric layer thereon, coagulating the polymeric layer on top of the support layer to form a thin film composite membrane, and immersing the thin film composite membrane into a water bath to obtain a filtration membrane. Also disclosed are a filtration membrane prepared by the method, and a process of filtering a liquid using the filtration membrane thus prepared.

Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.

Abstract: A filter cartridge, in particular gravity-operated filter cartridge, having a body portion with at least one water outlet and a head portion with at least one water inlet and at least one air outlet, the head portion being arranged on top of the body portion, the body portion and the head portion together forming a housing with an inner volume, the head portion having a lower rim defining a bottom opening of the head portion, the filter cartridge further having a mesh located in the inner volume and attached to the head portion along the lower rim, the mesh separating the inner volume into an upper volume defined by the mesh and the head portion and a lower volume defined by the mesh and the body portion, treatment media being arranged in the lower volume.