Abstract:
A dip coating apparatus includes a sealed case assembly for containing at least one workpiece to be coated; an air pump communicated with the sealed case assembly, for pumping air from the sealed case assembly and injecting air into the sealed case assembly; and a coating solution container containing a coating solution and communicated with the sealed case assembly, for injecting the coating solution to the sealed case assembly and retrieving the coating solution from the sealed case assembly.
Abstract:
An apparatus for recovering acid includes: a cathode; an anode; a plurality of anion exchange membranes disposed between the cathode and the anode; a plurality of proton selective membranes alternately arranged with the plurality of anion exchange membranes; a plurality of first compartments for accommodating an aqueous stream comprising anions and protons; and a plurality of second compartments alternately arranged with the plurality of first compartments for accommodating a recovery stream receiving from the first compartments anions through the anion exchange membranes and mainly protons through the proton selective membranes. An associated method is also described.
Abstract:
A method and system for reducing a water content in a substance, comprising: mixing a water-and-solid-containing substance with a liquefied gas solvent creating a mixture and at least part of water in the water-and-solid-containing substance to be extracted into the liquefied gas solvent; separating the mixture into a substance with a decreased water content and a solvent with an increased water content, comprising the liquefied gas solvent and water extracted from the water-and-solid-containing substance; separating the solvent with an increased water content into a liquefied-gas-solvent-rich phase and a water-rich phase by changing a temperature of the solvent with an increased water content, and in a process of changing the temperature, keeping the temperature to be lower than a boiling point of the liquefied gas solvent under a pressure in the process; and returning at least part of the liquefied-gas-solvent-rich phase to be used as a solvent in creating the mixture.
Abstract:
A method for decomposing nitrogen oxide includes: contacting a gas stream comprising nitrogen oxide with a device, the device comprising: a first electrode, an opposite second electrode, an electrolyte between the first and the second electrodes, and a power supply; and applying in a pulse mode an electrical current from the power supply to the first and the second electrodes to decompose nitrogen oxide. An associated apparatus is also described.
Abstract:
An electrode composition for removing nitrogen oxide, includes: a catalytic material and an adsorption material, wherein the adsorption material is a perovskite material of formula AaBbO3-δ, wherein 0.9