9 results about "Permselective membrane" patented technology

The utility model discloses a device for optimizing recovery solvent separation by analyzing tail gas V0Cs component change in the technical field of industrial waste gas treatment, which comprises an adsorption tower main body and a spray tower main body, one side of the adsorption tower main body is provided with a first connecting pipe, one side of the spray tower main body is provided with a second connecting pipe, and the first connecting pipe is connected with the second connecting pipe. A main pipe is arranged on one side of the first connecting pipe and the second connecting pipe, a filter and an infrared spectrometer are arranged on the surface of the main pipe, a water distribution pipe is arranged on the inner side of the spray tower main body, and by means of the arranged infrared spectrometer, when the concentration of VOCs in tail gas is detected to be high, an adsorption structure and a spray structure in the spray tower main body can be automatically started; the effect of separating VOCs in the tail gas is achieved, when the infrared spectrometer detects that the concentration of VOCs in the tail gas in the main pipe is low, the VOCs are introduced into the adsorption tower body, selective separation is conducted through the selective permeable membrane according to the polarity difference of the VOCs, and the solvent recovery effect is improved.

The present invention provides, inter alia, a lithium-selective transmission membrane with which it is possible to recover lithium ions without implementing a complicated process on the lithium-selective transmission membrane and to reduce the time and cost required for recovering the lithium ions. A lithium-selective transmission membrane 10 according to the present invention includes a sintered body of a lithium-ion conductor. The present invention is characterized in that at least some regions on the outer surface of the lithium-selective transmission membrane 10 are configured from surface-roughened processed surfaces 101.

What is provided is a metal ion recovery device including: a raw solution tank that is configured to store a metal ion containing raw solution including metal ions; a recovery liquid tank that is configured to store a metal ion recovery liquid including metal ions recovered from the metal ion containing raw solution; a metal ion selective permeable membrane that separates the raw solution tank and the recovery liquid tank and selectively transmits the metal ions; an anode that is arranged on a side of the metal ion selective permeable membrane close to the raw solution tank; a cathode that is arranged on a side of the metal ion selective permeable membrane close to the recovery liquid tank; a porous current collector that is formed of a conductive material; a first spacer that is configured to maintain a gap between the metal ion selective permeable membrane and the anode; and a second spacer that is configured to maintain a gap between the metal ion selective permeable membrane and the cathode, in which the anode is arranged to be electrically connected to the metal ion selective permeable membrane through the porous current collector, and the cathode is arranged to be electrically connected to the metal ion selective permeable membrane through the porous current collector, and two or more of at least one of the raw solution tank and the recovery liquid tank are provided.

The present application provides an electrochemical sensor and a method for testing metal ions by using the same, and relates to the technical field of water quality testing. The electrochemical sensor provided by the present application includes: a sensor body; sensing electrodes arranged on a surface of the sensor body, the sensing electrodes including a testing electrode, a reference electrode and a hydrogen ion indication electrode; an ion permselective membrane covering a surface of at least one of the testing electrode and the hydrogen ion indication electrode. According to the present application, the ion permselective membrane on the sensor body filters corresponding target hydrogen or metal ions in a solution. The hydrogen ion indication electrode measures a pH value of the solution and calibrate the concentration of tested ions based on the pH value, to reduce the interference of the pH value of the solution on measurement. The testing electrode tests the concentration of metal ions and calibrates the concentration of tested ions, to reduce the interference of interference ions on the tested ions, thereby enhancing the testing accuracy and stability.

A co-culture bioreactor is provided and comprises at least two chambers, each configured to house a distinct cell type in a shared culture medium and each having an inlet and an outlet for the shared culture medium. A selectively permeable membrane is associated with each of the at least two chambers and in fluid communication with the outlet of one chamber and an inlet of one or more other chambers. Each of the selectively permeable membranes is individually configured to prevent permeation of cells from the chamber it is associated with into the one or more other chambers whilst allowing culture medium and selected biomolecules to permeate therethrough. A pump is associated with each of the at least two chambers and is configured to circulate culture medium through the selectively permeable membrane and between the at least two chambers.

The application discloses a kind of local space oxygen-enriched control system and control method based on oxygen selective permeation membrane, belongs to air purification, environmental control and membrane separation technical field, for the problem that prior art cannot actively and efficiently improve indoor oxygen concentration and is difficult to compact integration.The system of the present application integrates outdoor fresh air fan, switching valve, oxygen-enriched membrane device, air pump, indoor return air and air supply fan, gas monitoring control unit, outdoor exhaust fan and other components, the control unit is based on the difference between oxygen sensor data and preset target oxygen concentration, dynamically regulates and controls switching valve passage, fan speed and air pump start-stop, selectively makes air through oxygen-enriched membrane device to produce oxygen-enriched air or through bypass air path into indoor, actively stabilizes indoor oxygen concentration at 21% to 26%.The system is suitable for residential, office and other local space, can realize active oxygen-enriched and environmental control, improve air quality while taking into account low energy consumption and safety and comfort.

Disclosed are systems for and methods of gas separation using selective permeability, including dehumidification. Envelopes and membranous partitions for use in such systems and methods are also disclosed. A dehumidifying system for a building is further disclosed having a membrane separation unit. The membrane separation unit has a membranous partition, with a selectively permeable membrane (12). Air is supplied along ducting from the building interior to a feed gas inlet on one side of the membrane; and retentate air is recirculated to the building interior. Outside air is supplied to the other side of the membrane, or a vacuum is applied.

The invention relates to the technical field of gas detection, in particular to a gas detection device and a detection method. Comprising a sample injection cavity provided with a selective permeable membrane which divides the sample injection cavity into a membrane inner cavity and a sample cavity; the sample inlet pipe is respectively communicated with the membrane inner cavity and the sample cavity, and the sample outlet pipe is communicated with the sample cavity; and the air outlet pipe is communicated with the membrane inner cavity, and a valve is arranged on the air outlet pipe. In the application, the sample injection cavity with the selective permeable membrane is arranged, the cavity is divided into the membrane inner cavity and the sample cavity, and the sample injection pipe, the sample outlet pipe, the gas outlet pipe, the circulating gas circuit and the controller are matched, so that the structural integration of membrane sample injection and membrane-free sample injection functions can be realized. The device can be in a membrane mode when the valve is closed, and can be in a membrane-free mode when the valve is opened. The air filtering equipment can filter the detected gas in the circulating gas path, so that the influence of the circulating gas on the detection result is prevented.