A skin cleaning device includes a body, the body is provided with a water storage tank, the water storage tank includes a clean water tank and a waste water tank, the body is provided with an electrolytic device, the water inlet of the electrolytic device is connected with the clean water tank, the water outlet of the electrolytic device is connected with a suction nozzle capable of contacting with the skin, the suction nozzle is also connected with a pump body, and the water outlet end of the pump body is connected with the waste water tank. The device can immediately generate hydrogen rich water with high efficiency and avoid wasting waiting time for electrolysis.

A method for reducing nitrates, nitrites, and/or hydroxylamine in water using a homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex. The method includes dissolving a copper(II) tetra-substituted fluorinated pinacolate ligand pre-catalyst complex in water having an excess amount of nitrates, nitrites, and/or hydroxylamine therein. The dissolved copper(II) tetra-substituted fluorinated pinacolate ligand pre-catalyst complex in the water is subjected to electrochemical reduction to form a homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex. The homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex reduces the nitrates, nitrites, and/or hydroxylamine in the water to compounds with nitrogen in a lower oxidation state with the homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex.

A flexible electrocatalytic membrane for removing nitrate from water, a preparation method and use thereof are provided. The method of the present invention includes dropwise adding an aramid fiber solution into deionized water to prepare an aramid nanofiber sol, then reacting an ethanol solution containing 3,4-ethylenedioxythiophene and ferric nitrate with the aramid nanofiber sol to prepare a conductive aramid nanofiber sol, and finally dropwise adding MXene nanosheets ultrasonically pretreated by a tetramethylammonium hydroxide solution into the conductive aramid nanofiber sol to prepare the flexible electrocatalytic membrane. The prepared flexible electrocatalytic membrane possesses good mechanical strength and flexibility, and can not only effectively remove nitrate but also avoid failure of electrocatalytic materials due to surface fouling in the process of electrocatalytic reduction of nitrate, and thus has a long service life.

A system and a method for separation of ions from ions-containing medium is disclosed herein, that utilizes capacitive-faradaic fuel cells (CFFC) particles coated at least partially with catalysts capable of catalyzing redox reactions provided a reductant (fuel) and/or an oxidant, thereby polarizing the particles to more effectively absorb charged species (ions) from the water upon introducing, e.g., H.sub.2 gas or O.sub.2 gas, in the medium during the adsorption or regeneration. The same concept is utilized in a hybrid electrochemical cell for providing a system and a method for generating and converting electrochemical energy.

An apparatus for manufacturing hydrogen containing water is disclosed. An aspect of the present disclosure may provide an apparatus for manufacturing hydrogen containing water, comprising: housing having first receiving space formed therein; cylinder coupled to the housing to form second receiving space; connecting passage penetrating the housing to interconnect the first receiving space and the second receiving space; ion exchange membrane closing the connecting passage; electrolysis part comprising an anode and a cathode, the anode being disposed in the first receiving space and the cathode being disposed in the second receiving space; exhaust pipe penetrating the housing to interconnect the first receiving space and an external space; and first waterproof membrane closing the exhaust pipe and inhibiting water from being discharged while allowing gas to be discharged.

An apparatus for manufacturing hydrogen-containing water is disclosed. In one aspect, the apparatus includes a container part formed with a upper space and a lower space positioned vertically from each other around a connecting passage therein. The apparatus also includes an ion exchange membrane configured to close the connecting passage and an electrolytic part comprising a cathode disposed on the upper space and a cathode an anode disposed on the lower space. The apparatus further includes a handle part configured to couple to the container part and to provide a supply passage for water to be supplied to the lower space and a discharge passage to discharge oxygen and ozone generated from the lower space.

The primary object of the present invention is directed to a High Flow Venturi Nozzle capable of diffusing gas into a large quantity of fast-moving liquid. A secondary object of the present invention is directed to a two-piece High Flow Venturi Nozzle assembly. Lastly, a third object of the present invention is directed to a method of manufacturing and using the two embodiments noted above.

A water treatment device includes: a water electrolyzer configured to produce oxygen gas by electrolyzing water; a pressurization mechanism pressurizing raw water by being supplied with the oxygen gas produced in the water electrolyzer; and a processor to which the raw water pressurized by the pressurization mechanism is supplied, the processor including a reverse osmosis membrane.

There is disclosed a method of making an electrode for an electrochemical reactor including the steps of providing a template and depositing electrode material such that the electrode material is in contact with the template. This template is provided in a form that produces channels in the electrode material. There is also disclosed an electrode for an electrochemical reactor which includes electrode material and a template, with the template occupying channels in the electrode material.

An electrochemical dechlorination of water method is provided. Dechlorination of water, containing chlorine or chloramine, is performed in an electrochemical reactor by passing electrons directly from an electrical grid to the chlorine or the chloramine via a cathode, where the dechlorination for the chlorine is defined by HOCl+2e.sup.−.fwdarw.Cl.sup.−+OH.sup.31, and wherein the dechlorination for the chloramine is defined by NH.sub.2Cl+H.sup.++2e.sup.−.fwdarw.Cl.sup.−+NH.sub.3. The cathode can be a stainless steel cathode. In one variation, the cathode and the anode are separated by a cation-exchange membrane. By means of this method, wastewater can be dechlorinated using power from the electric grid without the addition of external chemicals, thereby avoiding the cost of the chemicals, their transport, and the presence of their degradation products in the effluent water.