4 results about "Permselective membrane" patented technology

The application provides a method for white smoke elimination by carbon enrichment and coupling of a membrane method, and relates to the technical field of steel industrial solid waste resource utilization and flue gas purification, and comprises the following steps: S1, flue gas pretreatment: after original flue gas discharged by an industrial kiln is treated by dust removal, desulfurization and denitration, clean flue gas is obtained; S2, flue gas pressurization: the clean flue gas is sent into a pressurizing device and pressurized to 0.3-1.2 MPa, so that the partial pressure of CO2 and water vapor in the flue gas is increased, thereby providing driving force for subsequent membrane separation; S3, membrane method for water removal and carbon enrichment: the pressurized clean flue gas is sent into a membrane method for dehumidification and carbon enrichment system, and selective permeation membranes are used to realize the separation of CO2 and H2O in the flue gas from the flue gas, so that dry flue gas that does not permeate the membranes is directly discharged, and white smoke elimination is realized. Through the integrated process of 'pressurization-membrane separation-carbon sequestration by absorption', permanent fixation of CO2 is realized, and modification of steel slag is simultaneously completed; oxygen-rich residual gas generated in the absorption process is sent back to a combustion system as combustion air, and resource recycling is realized.

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.