公开(公告)号：US20240261774A1

公开(公告)日：2024-08-08

申请号：US18594586

申请日：2024-03-04

Applicant: RENSSELAER POLYTECHNIC INSTITUTE

Inventor： Sangwoo LEE ,  Chulsung BAE ,  Musashi J. BRIEM ,  Sungmin PARK

IPC: B01J41/07 ,  B01D61/44 ,  B01D71/06 ,  B01J41/14 ,  B01J47/12 ,  C02F1/469 ,  C08F212/32 ,  C08J5/22

CPC classification number: B01J41/07 ,  B01D61/44 ,  B01D71/06 ,  B01J41/14 ,  B01J47/12 ,  C02F1/469 ,  C08F212/32 ,  C08J5/2287 ,  C08F2810/00

Abstract: The anion exchange membranes exhibit enhanced chemical stability and ion conductivity when compared with traditional styrene-based alkaline anion exchange membranes. A copolymer backbone is polymerized from a reaction medium that includes a diphenylalkylene and an alkadiene. The copolymer includes a plurality of pendant phenyl groups. The diphenyl groups on the polymer backbone are functionalized with one or more haloalkylated precursor substrates. The terminal halide from the precursor substrate can then be substituted with a desired ionic group. The diphenylethylene-based alkaline anion exchange membranes lack the α-hydrogens sharing tertiary carbons with phenyl groups from polystyrene or styrene-based precursor polymers, resulting in higher chemical stability. The ionic groups are also apart from each other by about 3 to 6 carbons in the polymer backbone, enhancing ion conductivity. These membrane are advantageous for use in fuel cells, electrolyzers employing hydrogen, ion separations, etc.

公开(公告)号：US20230331593A1

公开(公告)日：2023-10-19

申请号：US18029955

申请日：2021-09-02

Applicant: ORGANO CORPORATION

Inventor： Yuki NAKAMURA ,  Keisuke SASAKI ,  Fumio SUDO

IPC: C02F1/44 ,  C02F1/469

CPC classification number: C02F1/441 ,  C02F1/469 ,  C02F2101/108

Abstract: A pure water production system includes a reverse osmosis membrane device; an electric deionized water production device that is disposed downstream of the reverse osmosis membrane device; and a control device that controls a processing condition of the reverse osmosis membrane device. The control device controls a processing condition of the reverse osmosis membrane device such that a removal rate of a specific substance of the electric deionized water production device is equal to or lower than a threshold value, and concentration of the specific substance in the treated water of the electric deionized water production device is equal to or lower than a prescribed value and specific resistance of the treated water of the electric deionized water production device is equal to or higher than a prescribed value.

公开(公告)号：US11780754B2

公开(公告)日：2023-10-10

申请号：US16839152

申请日：2020-04-03

Applicant: Massachusetts Institute of Technology

Inventor： Jongyoon Han ,  Junghyo Yoon

IPC: C02F1/469

CPC classification number: C02F1/4695 ,  C02F1/469 ,  C02F1/4693 ,  C02F2201/46 ,  Y02A20/124

Abstract: The present invention provides return flow ICP and ED systems and methods that can be used for water desalination and/or concentration of a wide range of target brine and other aqueous and contaminated streams.

公开(公告)号：US20190202717A1

公开(公告)日：2019-07-04

申请号：US15164984

申请日：2016-05-26

Applicant: Signal One International IP, LLC

Inventor： James Albert COATES

IPC: C02F1/469 ,  B01D69/02 ,  B01D71/02 ,  B01D24/28

CPC classification number: C02F1/469 ,  B01D24/28 ,  B01D69/02 ,  B01D71/027 ,  B01D2259/80 ,  B01D2325/26 ,  C02F2101/12 ,  C02F2101/20 ,  C02F2103/08 ,  C02F2201/46 ,  C02F2301/066

Abstract: A piezoelectric deionization system uses a piezoid bed made up of multiple piezoids for deionization of a working fluid containing charged particles, ions, and/or ionic complexes. The working fluid may be salt water in various embodiments. A uniaxial compressive force is applied to the piezoid bed causing a piezoelectric effect in the piezoids, resulting in a piezoelectric field generated by each particle, which attracts charged particles, ions, and/or ionic complexes contained in the working fluid. The piezoid bed is contained in a closed chamber to which the uniaxial compressive force is applied. Monocrystalline quartz particles or another suitable piezoid, natural or synthetic, may be used. A fluid is used to purge the piezoid bed of charged particles, ions, and/or ionic complexes after the piezoid bed becomes saturated through use. The working fluid may be used to purge the piezoid.

公开(公告)号：US20190020086A1

公开(公告)日：2019-01-17

申请号：US16057131

申请日：2018-08-07

Applicant: Massachusetts Institute of Technology

Inventor： Ian Salmon McKay ,  Ruaridh R. Macdonald ,  Thomas B. Milnes

IPC: H01M12/08 ,  C02F1/469 ,  H01M4/46 ,  H01M8/04828 ,  H01M2/02 ,  H01M2/14

CPC classification number: H01M12/08 ,  C02F1/469 ,  H01M2/0255 ,  H01M2/14 ,  H01M4/463 ,  H01M4/9041 ,  H01M8/04186 ,  H01M8/04283 ,  H01M8/0482 ,  H01M8/04828 ,  H01M8/0693 ,  H01M8/083 ,  H01M8/18 ,  H01M8/20 ,  H01M8/227 ,  H01M12/04 ,  H01M2300/0014

Abstract: An anaerobic aluminum-water electrochemical cell is provided. The electrochemical cell includes: a plurality of electrode stacks, each electrode stack including an aluminum or aluminum alloy anode, and at least one cathode configured to be electrically coupled to the anode; one or more physical separators between each electrode stack adjacent to the cathode; a housing configured to hold the electrode stacks, an electrolyte, and the physical separators; a water injection port, in the housing, configured to introduce water into the housing, and an amount of hydroxide base sufficient to form an electrolyte having a hydroxide base concentration of at least 0.5% to at most 13% of the saturation concentration when water is introduced between the anode and the least one cathode. The aluminum or aluminum alloy of the anode is substantially free of titanium and boron.

公开(公告)号：US20180050935A1

公开(公告)日：2018-02-22

申请号：US15679718

申请日：2017-08-17

Applicant: Prerna Kundalgurki

Inventor： Prerna Kundalgurki

IPC: C02F1/469 ,  B01D71/56 ,  B01D61/42

CPC classification number: C02F1/4693 ,  B01D61/427 ,  B01D63/06 ,  B01D71/56 ,  C02F1/469 ,  C02F1/4698 ,  C02F2001/46133 ,  C02F2001/46157 ,  Y02A20/131

Abstract: A desalination apparatus includes a membrane assembly disposed between a first fluid container and a second fluid container and in fluid contact with a first aqueous solution in the first fluid container and a second aqueous solution in the second fluid container. The membrane assembly includes a semipermeable membrane having a first side to be in fluid contact with the first aqueous solution and having a second side to be in fluid contact with the second aqueous solution; an electrode assembly disposed adjacent the second side of the semipermeable membrane and to contact the second aqueous solution; and power circuitry to apply charge to the electrode assembly to provide an ion concentration at the second side of the semipermeable membrane that is at least equal to the ion concentration on the first side of the semipermeable membrane.

公开(公告)号：US20180050336A1

公开(公告)日：2018-02-22

申请号：US15556957

申请日：2016-03-11

Applicant: NITTO DENKO CORPORATION

Inventor： Koso MATSUDA ,  Takashi SUZUKI ,  Takeshi NAKANO ,  Hiroyuki NISHII

IPC: B01J47/12 ,  B01J41/14 ,  C02F1/469 ,  C08F12/28 ,  C08J7/18 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1072 ,  C08J5/22

CPC classification number: B01J47/12 ,  B01J41/04 ,  B01J41/14 ,  C02F1/469 ,  C08F12/28 ,  C08J5/22 ,  C08J5/2243 ,  C08J7/18 ,  H01B1/06 ,  H01B13/00 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/106 ,  H01M8/1072 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/366 ,  Y02P70/56

Abstract: Provided is an anion-exchange membrane including: a substrate composed of a film of ultrahigh molecular weight polyolefin; and a graft chain having the following structural unit. L1 to L5 are each independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkanol group having 1 to 4 carbon atoms, or a specific functional group including an anion-exchange group, and an example of the functional group is —Z2-M1-Z1(R1)(R2)(R3). R1 to R3 are directly bonded to Z1 and are each independently an alkyl group having 1 to 8 carbon atoms or an alkanol group having 1 to 8 carbon atoms. M1 is a linear hydrocarbon chain having 3 to 8 carbon atoms, Z1 is a nitrogen atom or a phosphorus atom, and Z2 is a nitrogen atom bonded to one hydrogen atom, an oxygen atom, or a sulfur atom. L6 is a hydrogen atom, a methyl group, or an ethyl group.

公开(公告)号：US09851129B1

公开(公告)日：2017-12-26

申请号：US14720922

申请日：2015-05-25

Applicant: David John Tanner

Inventor： David John Tanner

IPC: F25B15/00 ,  F25B30/06 ,  B01D57/02

CPC classification number: F25B30/06 ,  B01D57/02 ,  C02F1/469 ,  F24F5/0007 ,  F25B13/00 ,  F25B2313/009 ,  F25B2313/021 ,  H01M8/227

Abstract: An ionic air cooling device comprising a salinity differential heat engine using a heat pump as the primary heat source and the mechanism by which the temperature differential is achieved. A closed loop thermodynamic cycle which produces a high thermodynamic efficiency in heat to energy conversion with a low temperature differential between the high and low sides, in addition to a net ambient temperature cooling effect by directly or indirectly converting ambient temperature/environmental low grade heat to electricity or potential kinetic energy or mechanical work. An ionic air cooling device which uses a salinity differential heat engine in which the heat energy can be converted to kinetic or electrical energy by means of pressure retarded osmosis, pressurized gas through volume confinement, or reversed electro dialysis.

公开(公告)号：US20170362102A1

公开(公告)日：2017-12-21

申请号：US15681542

申请日：2017-08-21

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Gary C. Ganzi ,  Frederick C. Wilkins

IPC: C02F1/469 ,  C02F9/00 ,  B01D61/48 ,  C02F1/44 ,  C02F103/08 ,  B01D61/44

CPC classification number: C02F1/469 ,  B01D61/44 ,  B01D61/48 ,  C02F1/441 ,  C02F1/444 ,  C02F1/4693 ,  C02F1/4695 ,  C02F9/00 ,  C02F2103/08 ,  C02F2201/46115 ,  C02F2301/08 ,  Y02A20/131 ,  Y02A20/134

Abstract: Water treatment systems including electrically-driven and pressure-driven separation apparatus configured to produce a first treated water suitable for use as irrigation water and a second treated water suitable for use as potable water from brackish water and methods of operation of same.

公开(公告)号：US20170321131A1

公开(公告)日：2017-11-09

申请号：US15497505

申请日：2017-04-26

Applicant: ExxonMobil Research and Engineering Company

Inventor： Ashok Uppal ,  Babak A. Jajuee ,  Tarek A. Elsolh ,  Jason M. McMullan

IPC: C10G33/02 ,  C02F1/48 ,  B01D17/06

CPC classification number: C10G33/02 ,  B01D17/06 ,  B03C11/00 ,  C02F1/469 ,  C02F1/4696 ,  C02F1/4698 ,  C02F1/48 ,  C02F2101/325 ,  C02F2103/365 ,  C02F2201/4617

Abstract: An electro-kinetic agglomerator for resolving crude oil and water emulsions containing charged particles by the application of a direct current voltage potential. The electro-kinetic agglomerator comprises a shaftless auger with a charged conductive rod positioned in the center of the shaftless auger and a charged porous drum surrounding wherein the electro-kinetic agglomerator has a DC voltage gradient such that the charged particles are attracted to the conductive rod.