A method for recycling a scrapped polyvinylidene fluoride (PVDF) membrane through chemical cleaning-structural transformation-hydrophilicity is disclosed, which can extend the service life of scrapped PVDF membrane materials (namely, membrane at the end of service life). The method includes the following steps: cleaning a scrapped membrane with sodium hypochlorite and citric acid; treating the membrane with a structural transformation agent, where, irreversible contaminants are washed away while the PVDF membrane is subjected to pore expansion and hydrophilization; and with self-polymerization of dopamine on a membrane surface, further improving the hydrophilicity of the membrane surface, enhancing the anti-contamination performance, and repairing damaged points on the surface of the scrapped PVDF membrane produced during long-term operation.

A method for recycling a scrapped polyvinylidene fluoride (PVDF) membrane through chemical cleaning-structural transformation-hydrophilicity is disclosed, which can extend the service life of scrapped PVDF membrane materials (namely, membrane at the end of service life). The method includes the following steps: cleaning a scrapped membrane with sodium hypochlorite and citric acid; treating the membrane with a structural transformation agent, where, irreversible contaminants are washed away while the PVDF membrane is subjected to pore expansion and hydrophilization; and with self-polymerization of dopamine on a membrane surface, further improving the hydrophilicity of the membrane surface, enhancing the anti-contamination performance, and repairing damaged points on the surface of the scrapped PVDF membrane produced during long-term operation.

The present invention relates to the purification of target molecules like immunoglobulins from plasma. The use of a certain type of ion exchanger based on a crosslinked polyvinylether results in especially high yields of the target molecule.

The present invention provides a new approach to decreasing water use, energy consumption, chemical use and sewage expense in commercial kitchen operations by reusing drain water and recovering the heat energy, thereby reducing operation costs. The invention, however, is not limited to kitchen operations, it could be applied to other operations that produce greywater and could benefit from reusing water and resources.

A continuous flow nucleic acid extraction apparatus comprising a piston column apparatus for the extraction of nucleic acids from a nucleic acid sample. The disclosure also includes a method of using the continuous flow nucleic acid extraction apparatus.

Aspects of the disclosure are directed to a screen configured for use in association with a cooler of an aircraft, the screen comprising: a first portion arranged as a grid and located in a line-of-sight of the cooler with respect to a fluid inlet, and a second portion located out of the line-of-sight of the cooler with respect to the fluid inlet, wherein the second portion is grid-free.

The present disclosure provides an exemplary process for a system that may remove particulate from industrial water fluids using a Particulate Removal System (PRS). In some aspects, this system may treat water pulled from different Industrial Fluid Systems (IFS) while doing continuous monitoring and quality tests of the water. In some embodiments, the system may use sensors and other technology to allow for the system to periodically self-clean itself allowing for maximum efficiency and accuracy while also cleaning the water from the IFS. In some implementations, the water from the IFS may be filtered through a Particulate Trap Mechanism (PTM) to ensure that particulate including dissolved material has been removed from the water and separated from possible contamination throughout the system. In some aspects the system may be used for continuous and direct measurement of water quality and automatic chemical level adjustment by systems to maintain a desired range or setpoints.

A pneumatic air filter cleaning device is configured to clean an air filter, a cavity, a pair of openings, and a plurality of fibrous walls that capture contaminants. The device may comprise one or more flanged filter adapters disposed in a spaced-apart, coplanar relationship. A U-shaped tube extends between the flanged filter adapters in a rotatable relationship. The U-shaped tube has apertures offset from a radial vector configured to discharge pressurized air while rotating 360 degrees. An air tube feeds pressurized air into the U-shaped tube, creating inertia that rotates the U-shaped tube while simultaneously discharging pressurized air from the apertures. The device further comprises a flexible impermeable sleeve which interconnects a flanged filter adapter and a vacuum fixture on a vacuum. The impermeable flexible sleeve allows the device to be universally compatible with vacuums of any size. The air filter is cleaned from the inside out, and in a uniform manner. An attached container may capture dislodged contaminants.

A pneumatic air filter cleaning device is configured to clean an air filter, a cavity, a pair of openings, and a plurality of fibrous walls that capture contaminants. The device may comprise one or more flanged filter adapters disposed in a spaced-apart, coplanar relationship. A U-shaped tube extends between the flanged filter adapters in a rotatable relationship. The U-shaped tube has apertures offset from a radial vector configured to discharge pressurized air while rotating 360 degrees. An air tube feeds pressurized air into the U-shaped tube, creating inertia that rotates the U-shaped tube while simultaneously discharging pressurized air from the apertures. The device further comprises a flexible impermeable sleeve which interconnects a flanged filter adapter and a vacuum fixture on a vacuum. The impermeable flexible sleeve allows the device to be universally compatible with vacuums of any size. The air filter is cleaned from the inside out, and in a uniform manner. An attached container may capture dislodged contaminants.

A pneumatic air filter cleaning device is configured to clean an air filter, a cavity, a pair of openings, and a plurality of fibrous walls that capture contaminants. The device may comprise a first cap and a second cap disposed in a spaced-apart, coplanar relationship. A U-shaped tube extends between the caps in a rotatable relationship. The U-shaped tube has apertures offset from a radial vector configured to discharge pressurized air while rotating 360 degrees. An air tube feeds pressurized air into the U-shaped tube, creating inertia that rotates the U-shaped tube while simultaneously discharging pressurized air from the apertures. The air filter is cleaned from the inside out, and in a uniform manner. An attached container may capture dislodged contaminants.