A passive device for controlling rain water runoff. The device including: an inlet for directing the rain water runoff; and a mechanism for directing a predetermined initial amount of the rain water runoff to a first outlet and passively directing a subsequent amount of the rain water runoff to a second outlet.

A composition of five parts by mass of chitosan and one part graphene oxide is suspended in water. The composition may be used to form filtration layers of any size or shape and may be reinforced by additional layers. The composition may be used to construct a large filtration apparatus of any size or shape and may be used to form highly resilient, antimicrobial structures and surfaces for a variety of applications.

A crossflow filtration unit for continuous diafiltration of a feed fluid for obtaining a retentate and a permeate, a corresponding method for diafiltration and the use of the crossflow filtration unit are provided. The crossflow filtration unit includes a diafiltration channel, a flat first filter material, a retentate channel, a flat second filter material, and a permeate collection channel, arranged such that the flat first filter material delimits the diafiltration channel and the retentate channel from one another, and the flat second filter material delimits the retentate channel and the permeate collection channel from one another. The diafiltration channel is fluidly connected to at least one inlet for the diafiltration medium, the retentate channel is fluidly connected to at least one inlet for the feed fluid and to at least one outlet for the retentate. The permeate collection channel is fluidly connected to at least one outlet for the permeate.

A panicle separation multi-membrane matrix device and method are provided. The particles isolated may comprise noun-scale particles, such extracellular membrane vesicles, having a size of about 50 to about 150 nm. The vesicles are released by many different cell types, and may be efficiently isolated at high yield and purity according to the present methods from various body fluids (e.g., blood, saliva, breast milk, serum, plasma, ascites fluid, etc.). Such isolated exosome preparations may include biomarkers, such as disease biomarkers (diagnostic markers) for various disease (early stage and late stage cancers, neurological disorders (Parkinson disease, Alzheimer disease), diabetes, pancreatic diseases, renal failure, infectious diseases (HIV, tuberculosis, malaria, hepatitis)). The present methods and devices may be used to detect and monitor animals (human, live-stock, companion animal) for infectious diseases, such as tuberculosis and other diseases. The methods and devices require minimal sample material (10 ?l), are rapid, economical, yield highly enriched small molecule (e.g., exosoines) preparations, and do not require electricity.

Systems and methods using: a membrane unit to treat fluids recovered from an oil and gas well are provided. The membrane unit may include a membrane having a porous substrate at. least partially coated with graphene oxide, making the membrane hydrophilic. The membrane separates water from other components within a fluid stream. The membrane unit may include an inlet to receive a fluid stream into the membrane unit. The fluid stream may be pretreated prior to reaching the membrane unit The membrane unit may also include a first outlet in fluid communication with one side of the membrane and a second outlet in fluid communication with the opposite side of the membrane.

An ion-exchange and ultrafiltration filter system having an exterior housing having an inlet and an outlet with an ultrafiltration membrane provided within the housing along a central axis about a central portion of the housing with an ion-exchange membrane provided within the housing between the ultrafiltration membrane and the housing. The ion-exchange and ultrafiltration filter system being capable of being configured so as to provide two-step filtration in a plurality of modes, either ion-exchange to ultrafiltration, or ultrafiltration to ion-exchange.

The present invention relates to a centrifugal force-based nanoparticle separation apparatus and method. Specifically, the present invention is based on having a low centrifugal force and a small size, and may thus separate nanovesicles unrelated to antibody specificity in a short time and without using an ultracentrifuge. Further, the present invention requires no additional professional personnel and enables accurate fluid measurement by integrating and automating all processes after sample injection, and may thus reduce the loss of nanovesicles.

The present application relates to a membrane separation device. According to the separation device of the present application, components to be separated using a separation membrane having a small area size can be separated with high selectivity and consequently processing efficiency and economical efficiency can be superbly improved; and according to a method for producing an expanded polystyrene which includes the membrane separation device, components to be separated using a separation membrane having a small area size, in particular, a volatile organic compound (VOC), can be separated with high selectivity and consequently processing efficiency and economical efficiency can be superbly improved, and also, by separating and recovering VOC, an effect in preventing environmental pollution caused by global warming is exhibited.

Disclosed are apparatus and methods for blood and other biological fluid purification using a membrane with cell containing vascular channel systems and filtration channel systems. Also disclosed are methods of making the apparatus as well as methods of making membranes.

A filter module has hollow fibers which are combined into fiber bundles having end face pottings. The pottings of the fiber bundles are received into a common end disk.