Abstract:
A desalination system comprises a silica removal apparatus configured to receive a first feed stream for silica removal. The silica removal apparatus comprises first and second electrodes, and a plurality of paired ion exchange membranes disposed between the first and second electrodes to form a plurality of alternating first and second channels. The silica removal apparatus further comprises a plurality of spacers disposed between each pair of the adjacent ion exchange membranes and between the first and second electrodes and the respective ion exchange membranes. Wherein a first member of each pair of the ion exchange membranes is an anion exchange membrane and a second member of each pair of the ion exchange membranes is an anion exchange membranes, a monovalent cation exchange membrane or a bipolar ion exchange membrane, and wherein the first members and the second members are disposed alternately within the plurality of the paired ion exchange membranes.
Abstract:
Methods for preparing an electrode comprise: providing a mixture of carbon particles and a solvent and shearing the mixture to form a dispersion of the carbon particles in the solvent; adding non-fribrillaied poly(tetrafluoroethylene) to the dispersion to provide a resultant mixture and shearing the resultant mixture until at least a portion of the poly(tetrafluoroethylene) has been fibrillated; processing the resultant mixture into a sheet; and attaching the sheet onto a current collector. Methods for preparing sheet for the electrode and composition for the sheet are also provided.
Abstract:
An electrode assembly is provided. The assembly includes a chargeable electrode configured to adsorb oppositely charged ions, where the electrode comprises a porous material. The assembly further includes an ion exchange material in contact with the porous material of the chargeable electrode, where the ion exchange material is similarly charged as the chargeable electrode, and where the ion exchange material is permeable to the oppositely charged ions and at least partially impermeable to the similarly charged ions.
Abstract:
A method comprises: positioning a first capacitive electrode and a first non- capacitive electrode in a first aqueous solution comprising at least one of sodium chloride, potassium chloride, sodium bromide and potassium bromide; applying a first electrical current on the first capacitive electrode and the first non-capacitive electrode to electrolyse the first aqueous solution to generate at least one of chlorine and bromine, while the first capacitive electrode acts as cathode and the first non- capacitive electrode acts as anode; applying a second electrical current on the first capacitive electrode and the first non-capacitive electrode to electrolyse the first aqueous solution to generate hydrogen, while the first capacitive electrode acts as anode and the first non-capacitive electrode acts as cathode; and switching polarities of the first capacitive electrode and the first non-capacitive electrode before the first capacitive electrode is fully occupied.
Abstract:
A desalination system comprises an electrical separation device configured to receive and ionize a first stream for desalination and a crystallization device. The crystallization device is configured to provide a second stream to the electrical separation device to earn- away ions from the first stream and defining a crystallization zone for facilitating precipitation of the ions and a solid-liquid separation zone in fluid communication with the crystallization zone for separation of the precipitate. A desalination method is also presented.
Abstract:
A method for removing ionic species from a desalination unit, comprises: (a) circulating a wash stream in a closed loop comprising a desalination unit (c) and a precipitation unit (3), the wash stream flowing at a linear velocity of at least 5 cm/second through the desalination unit, the wash stream becoming more saline after passage through the desalination unit; and (b) removing a portion of calcium sulfate from the wash stream by precipitation in the precipitation unit to obtain a supersaturation degree of calcium sulfate in the wash stream entering the desalination unit in a range of from about 1.0 to about 3.0. The desalination unit is either a super capacitive desalination or an electrodialysis.
Abstract:
A device includes a first electrode and a second electrode spaced from the first electrode to define a volume. An anion exchange membrane and a cation exchange membrane are disposed within the volume. A controller controls a supply of electrical current from an electrical source to the first electrode and to the second electrode. The electrical current supply is controlled to switch from a first mode of operation to a second mode of operation providing electrical current having a reverse polarity during each cycle. The electrical current is supplied at a controlled cycle rate and for a controlled duration. The cycle rate is greater than about 100 hertz and less than about 10 kilohertz.
Abstract:
The present invention relates to a hair curling iron that compresses and heats hair to create various waves or curls in hair wholly or partially and, more particularly, to a hair curling iron having a roller of various shapes, in which a plurality of heat pads may be provided inclined in a lower cover and, at the same time, a rotating roller is attached/detached or fixed to an upper cover, having various shapes such as a circle, quadrangle, hexagon, octagon, etc. so that the hair may come in contact between the heating pads and the rotating roller of various shapes, thus creating various hairstyles more effectively. Accordingly, the hair curling iron having a roller of various shapes of the present invention provides various effects in that it is possible not only for an experienced beauty artist but also for an individual to express a variety of hairstyles with various curls since the shape of the rotating roller is diversified, it provides an effect of facilitating the expression of an hairstyle in accordance with a user's taste, it prevents the hair from being damaged, and it is possible to express an exact hairstyle in accordance with the user's taste even with a weak force, thus satisfying the users' demand.
Abstract:
An apparatus for gravity separation, comprising: an inlet for receiving a separation stream (12); a separating section in communication with the inlet (10), for separating the separation stream and providing a first product stream (14) and a second product stream (17), and comprising: a first separating junction (130) comprising a first input conduit (12), a first output conduit (121) and a second output conduit (122), a second separating junction in communication with the first output conduit (131) and comprising a third output conduit (123) and a fourth output conduit (124), and a third separating junction (132) in communication with the second output conduit and comprising a fifth output conduit (125) and a sixth output conduit (126); a first outlet for outputting the first product stream (15); and a second outlet for outputting the second product stream (16). The present invention also relates to a corresponding method for gravity separation, and an oil and gas production system and method comprising the aforementioned apparatus and method.
Abstract:
An electrochemical separation device includes a pair of electrodes and at least a dilution spacer between the electrodes. The dilution spacer provides a dilute compartment having an inlet for a solution to be diluted to enter the dilute compartment, an outlet for a diluted solution to exit the dilute compartment, and a dilute flow path connecting the inlet and outlet. The dilute flow path has a width gradually decreased substantially along a flow direction from the inlet to the outlet, or in some cases, the dilute flow path includes longitudinal sections and turning sections that join the longitudinal sections to form a winding series flow path, wherein the longitudinal sections have a width gradually decreased along a flow direction from the inlet to the outlet.