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公开(公告)号：US20220380235A1
公开(公告)日：2022-12-01
申请号：US17646829
申请日：2022-01-03
发明人： George Y. Gu
摘要： Systems and methods for treating water may involve a first electrochemical separation module that includes at least one ion exchange membrane having a first set of performance characteristics, and a second electrochemical separation module that includes at least one ion exchange membrane having a second set of performance characteristics that is different than the first set of performance characteristics. Performance characteristics may relate to at least one of water loss, electrical resistance, and permselectivity. Staged treatment systems and methods may provide improved efficiency.
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公开(公告)号：US20220227649A1
公开(公告)日：2022-07-21
申请号：US17612366
申请日：2020-06-17
申请人： UNIVERSITY OF MIAMI
摘要： A system for electrohydromodulation of wastewater. In an embodiment, the system comprises an anode in contact with at least one anodic chamber and a cathode in contact with a cathodic chamber. Each anodic chamber and the cathodic chamber are configured to receive a flow of wastewater. A first multivalent cation exchange membrane, between each anodic chamber and the cathodic chamber, allows multivalent cations to pass therethrough while preventing monovalent ions to pass therethrough. A power source is electrically coupled to each anode and the cathode, and is configured to apply a voltage across wastewater in the anodic chamber and the cathodic chamber, to thereby cause multivalent cations in the wastewater to pass through the multivalent cation exchange membrane.
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公开(公告)号：US11318416B2
公开(公告)日：2022-05-03
申请号：US15301241
申请日：2015-04-02
IPC分类号： C25B1/04 , B01D53/32 , B01D61/46 , B01D61/54 , C02F1/469 , B01D61/42 , C02F103/08 , C02F103/18 , C02F1/461 , B01D53/14
摘要： A method and system for reducing ion concentration of a solution and converting gas. The system comprising a multi-chamber unitary dialysis cell comprising a gas chamber, a product chamber, and an acid chamber. Ion exchange barriers separate the chambers of the dialysis cell. A first anion exchange barrier is positioned between the product chamber and the acid chamber and a first cation exchange barrier is positioned between the product chamber and the gas chamber. Anions from the solution being treated associate with cations from the acid chamber to form an acid solution in the acid chamber, and cations from the solution being treated associate with anions from the fluid comprising gas to form salt, thereby reducing the ion concentration of the solution being treated and converting at least a portion of the gas into salt.
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公开(公告)号：US20210340033A1
公开(公告)日：2021-11-04
申请号：US17168112
申请日：2021-02-04
摘要： The present disclosure relates to methods and systems for algae cultivation including the integration of electrochemical carbonate production for enhancing algae growth. More particularly, the present disclosure relates to methods and systems for producing a sodium hydroxide from brine using an electrochemical cell, contacting the sodium hydroxide stream with a CO2 gas sweep and producing a carbonate stream, and cultivating an algae slurry in a cultivation vessel comprising at least a portion of the carbonate stream.
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公开(公告)号：US20210308347A1
公开(公告)日：2021-10-07
申请号：US17350754
申请日：2021-06-17
IPC分类号： A61M1/16 , B01D61/42 , C02F1/469 , C02F1/467 , C02F1/461 , B01D61/44 , C25B3/23 , C25B9/17 , B01D61/46
摘要： The present disclosure provides devices and methods of using same for cleansing a solution (e.g., a salt or used dialysis solution) of urea via electrooxidation, and more specifically to cleansing a renal therapy solution/dialysis solution of urea via electrooxidation so that the renal therapy solution/dialysis solution can be used or reused for treatment of a patient. In an embodiment, a device for the removal of urea from a fluid having urea to produce a cleansed fluid includes a urea decomposition unit and an electrodialysis unit.
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公开(公告)号：US20210290830A1
公开(公告)日：2021-09-23
申请号：US17343190
申请日：2021-06-09
摘要： A method of cleaning used dialysis fluid having urea to produce a cleaned dialysis fluid, the method including passing the used dialysis fluid having urea through a combination electrodialysis and urea oxidation cell, the cell including (i) a first set of electrodes for separation of the used dialysis fluid having urea into an acid stream and a basic stream, wherein the first set of electrodes includes an anode and a cathode; (ii) one or more second set of electrodes positioned to contact the basic stream with an electrocatalytic surface for decomposition of urea via electrooxidation, wherein the one or more second set of electrodes includes an anode and a cathode; and (iii) at least one power source to provide the first and second sets of electrodes with an electrical charge to activate the electrocatalytic surface.
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公开(公告)号：US11033669B2
公开(公告)日：2021-06-15
申请号：US16535906
申请日：2019-08-08
IPC分类号： A61M1/16 , B01D61/44 , B01D61/46 , C02F1/469 , C02F1/467 , C02F101/16 , C02F1/461 , B01D61/48 , C25F1/00 , C25F7/00
摘要： A method of cleaning used dialysis fluid having urea to produce a cleaned dialysis fluid, the method including passing the used dialysis fluid having urea through a combination electrodialysis and urea oxidation cell, the cell including (i) a first set of electrodes for separation of the used dialysis fluid having urea into an acid stream and a basic stream, wherein the first set of electrodes includes an anode and a cathode; (ii) one or more second set of electrodes positioned to contact the basic stream with an electrocatalytic surface for decomposition of urea via electrooxidation, wherein the one or more second set of electrodes includes an anode and a cathode; and (iii) at least one power source to provide the first and second sets of electrodes with an electrical charge to activate the electrocatalytic surface.
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公开(公告)号：US10815134B2
公开(公告)日：2020-10-27
申请号：US16087469
申请日：2017-04-24
发明人： Shigeru Sasabe , Tomoko Tani , Noriyoshi Ueya , Kazuo Imai , Hiroaki Kitagawa
IPC分类号： C02F1/46 , C02F1/461 , B01D61/46 , B01D65/02 , B01D61/50 , B01D61/44 , B01D61/54 , C02F5/10 , C02F1/469
摘要： The water treatment device according to the present disclosure includes: an electrochemical cell having electrodes including a positive electrode and a negative electrode, and a bipolar membrane; a tank; a power supply configured to apply power to the electrodes; a water circulation flow path having at least the tank and the electrochemical cell and through which water circulates; a circulation device configured to circulate water in the water circulation flow path; a raw water supply path configured to supply raw water to the water circulation flow path; and a control device. In performing water softening treatment in the electrochemical cell where power is applied to the electrodes so as to remove ions from raw water and soft water is produced, the control device drives the circulation device so as to circulate water in the water circulation flow path.
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公开(公告)号：US10661227B2
公开(公告)日：2020-05-26
申请号：US15573523
申请日：2016-05-11
发明人： Sung Kook Park , Kwang Seok Park , Sang Gil Lee , Woo Chul Jung , Ki Young Kim , Hyun Woo Lee
摘要： The present invention relates to a method for producing lithium hydroxide and lithium carbonate, wherein the lithium hydroxide and the lithium carbonate can be produced by a series of steps of: performing bipolar electrodialysis of a lithium-containing solution from which divalent ion impurities have been removed; concentrating lithium in the lithium-containing solution and at the same time, converting the lithium to lithium hydroxide; and carbonating the lithium hydroxide to obtain lithium carbonate.
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公开(公告)号：US20200147518A1
公开(公告)日：2020-05-14
申请号：US16629385
申请日：2017-07-24
申请人： Shimadzu Corporation
发明人： Katsumasa SAKAMOTO
摘要： An ion suppressor includes ion exchange membranes between a pair of electrodes. Regeneration liquid channels are provided in the spaces between the electrodes and the ion exchange membranes, and an eluent channel is provided between the ion exchange membranes. Ion re-exchange in the eluent on the downstream side of the eluent channel is suppressed, thereby making it possible to improve the detection sensitivity for the ion to be measured. For example, the eluent channel has a folded structure, thereby increasing the amount of current on the downstream side of the eluent channel, and thus, the accumulation of ions is suppressed, and accordingly, ion re-exchange in the eluent can be suppressed.
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