Patents by Inventor Simon P. Dukes
Simon P. Dukes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240336507Abstract: A system for the treatment of phosphate-containing wastewater comprises a pretreatment subsystem including a mixing chamber configured to mix a potassium-based salt with the wastewater to precipitate K2SiF6 from the wastewater, a solids-liquid separator to separate the precipitated K2SiF6 from the wastewater and form a pretreated wastewater, and a mixing chamber to dilute the pretreated wastewater with raw wastewater, and a filtration subsystem including a first filtration configured to receive the pretreated wastewater and remove particles to form a first effluent, a second filtration unit remove divalent ions from the first effluent and form a second effluent, and a third filtration unit configured to remove additional dissolved solids from the second effluent and form a third effluent suitable for discharge to the environment.Type: ApplicationFiled: May 26, 2022Publication date: October 10, 2024Applicant: Evoqua Water Technologies LLCInventors: Simon P Dukes, Joshua Griffis, Li-Shiang Liang, Harshita Gogoi, Wenxin Du, Thomas K Mallmann
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Publication number: 20240308885Abstract: An electrochlorination system comprises a source of feed fluid, a product fluid outlet, and a plurality of electrochemical cells connected fluidically between the source of feed fluid and the product fluid outlet. The system is configured to operate at least one of the plurality of electrochemical cells at one of a first current density or a first flow rate, and to operate another of the plurality of electrochemical cells at a second current density or second flow rate different from the respective first current density or first flow rate.Type: ApplicationFiled: November 14, 2023Publication date: September 19, 2024Applicants: Evoqua Water Technologies LLC, Evoqua Water Technologies LimitedInventors: Joshua Griffis, Simon P Dukes, Paul Beddoes, Peter G Rogers
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Patent number: 12070722Abstract: An electrochemical separation device includes a first electrode, a second electrode, a cell stack including alternating depleting compartments and concentrating compartments disposed between the first electrode and the second electrode, an inlet manifold configured to introduce a fluid to one of the depleting compartments or the concentrating compartments an outlet manifold, and one or more of a fluid flow director disposed within the inlet manifold and having a surface configured to alter a flow path of the fluid introduced into the inlet manifold and direct the fluid into the one of the depleting compartments or the concentrating compartments, and a second fluid flow director disposed within the outlet manifold and having a surface configured to alter a flow path of the fluid introduced into the outlet manifold via one of the depleting compartments or the concentrating compartments.Type: GrantFiled: November 29, 2022Date of Patent: August 27, 2024Assignee: Evoqua Water Technologies LLCInventors: Joshua Griffis, Li-Shiang Liang, William Lane, Simon P. Dukes, Kris Wy Loon Lim
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Publication number: 20240240338Abstract: Apparatuses for the generation of carbon dioxide and hydrogen from a water having a carbonate species are disclosed. The apparatus includes an anodic compartment having an anode disposed on a first side of the anodic compartment and a cathodic compartment having a cathode disposed on a first side of the cathodic compartment. The apparatus further includes a first cation permeable fluidic separator disposed on a second side of the anodic compartment and a second cation permeable fluidic separator disposed on a second side of the cationic compartment. A center compartment is defined between the first cation permeable fluidic separator and the second cation permeable fluidic separator. The apparatus further includes a flow control system configured to independently control flow of water through each of the anodic compartment, the cathodic compartment, and the center compartment. Methods of generating hydrogen, carbon dioxide, and oxygen from seawater using the apparatus are also disclosed.Type: ApplicationFiled: May 11, 2022Publication date: July 18, 2024Applicant: Evoqua Water Technologies LLCInventors: Joshua Griffis, Simon P Dukes, Li-Shiang Liang, Benjamin Satterfield, Zaccur Qasim Fettig
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Patent number: 12017183Abstract: An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.Type: GrantFiled: June 13, 2023Date of Patent: June 25, 2024Assignee: Evoqua Water Technologies LLCInventors: Michael J. Muse, Joshua Griffis, Li-Shiang Liang, Michael Shaw, Simon P. Dukes
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Patent number: 11929533Abstract: A flow battery having at least one rechargeable cell is disclosed. The at least one rechargeable cell can include an anolyte compartment, a catholyte compartment, and an anion exchange membrane positioned between the anolyte and catholyte compartments. The anion exchange membrane can have a thickness of less than 100 ?m and a steady state diffusivity of less than 0.4 ppm/hr/cm2 with respect to a cation species in an electrolyte of the rechargeable cell. A method of facilitating use of a flow battery including providing the anion exchange membrane is also disclosed. A method of facilitating storage of an electric charge comprising providing the flow battery is also disclosed. A method of producing an anion exchange membrane is also disclosed.Type: GrantFiled: December 13, 2018Date of Patent: March 12, 2024Assignee: Evoqua Water Technologies LLCInventors: George Y. Gu, Savvas Hadjikyriacou, Michael J. Shaw, Simon P. Dukes
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Publication number: 20240050902Abstract: An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.Type: ApplicationFiled: June 13, 2023Publication date: February 15, 2024Applicant: Evoqua Water Technologies LLCInventors: Michael J. Muse, Joshua Griffis, LI-Shiang Liang, Michael Shaw, Simon P. Dukes
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Publication number: 20240043294Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.Type: ApplicationFiled: October 11, 2023Publication date: February 8, 2024Applicant: Evoqua Water Technologies LLCInventors: George Y. Gu, Michael J. Shaw, Joshua Griffis, Simon P. Dukes
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Publication number: 20240034648Abstract: An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.Type: ApplicationFiled: October 8, 2023Publication date: February 1, 2024Applicant: Evoqua Water Technologies LLCInventors: Joshua Griffis, George Gu, Simon P. Dukes, Michael J. Shaw
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Publication number: 20240010529Abstract: Methods of treating water having organic contaminants are disclosed. The methods include performing a first treatment on the water effective to oxidize a predetermined amount of the organic contaminant and electrochemically treating the water. The methods include introducing a hydrogen peroxide (H2O2) containing reagent into the water, allowing the H2O2 containing reagent to react with the organic contaminant for a reaction time effective to oxidize a predetermined amount of the organic contaminant, and electrochemically treating the water. Systems for treating water are also disclosed. The systems include an electrochemical cell, a source of an H2O2 containing reagent upstream from the electrochemical cell, and a controller operable to regulate a reaction time of the H2O2 containing reagent in the water and a potential applied to the electrochemical cell.Type: ApplicationFiled: October 19, 2021Publication date: January 11, 2024Applicant: Evoqua Water Technologies LLCInventors: SIMON P. DUKES, GEORGE Y. GU, JOSHUA GRIFFIS, YANG CHEN
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Publication number: 20230373833Abstract: An electrochlorination process includes treating water from a source of water in an advanced water conditioning system that removes at least a portion of anions and cations from the water and produces demineralized water, blending the demineralized water with sodium chloride to form a brine solution, and treating the brine solution in an electrolyzer to form a disinfection solution including sodium hypochlorite having a concentration of chlorate of less than 0.25 mg/L.Type: ApplicationFiled: October 8, 2021Publication date: November 23, 2023Applicant: Evoqua Water Technologies LtdInventors: JOSHUA GRIFFIS, SIMON P. DUKES, WENXIN DU, DANIEL R. CORRADO, FREDERICK C. WILKINS, XIANGYI QIAO, ROMULO DADOR CONDE, DAVID BONNICK, RYAN FLOOD
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Publication number: 20230331595Abstract: Electrochemical treatment for the removal of poly- and perfluorolkyl substances from water is disclosed. An electrochemical cell may include a Magnéli phase titanium oxide electrode.Type: ApplicationFiled: August 23, 2019Publication date: October 19, 2023Applicant: Evoqua Water Technologies LLCInventors: Yang Chen, Simon P. Dukes
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Publication number: 20230201775Abstract: An electrochemical separation device includes a first electrode, a second electrode, a cell stack including alternating depleting compartments and concentrating compartments disposed between the first electrode and the second electrode, an inlet manifold configured to introduce a fluid to one of the depleting compartments or the concentrating compartments an outlet manifold, and one or more of a fluid flow director disposed within the inlet manifold and having a surface configured to alter a flow path of the fluid introduced into the inlet manifold and direct the fluid into the one of the depleting compartments or the concentrating compartments, and a second fluid flow director disposed within the outlet manifold and having a surface configured to alter a flow path of the fluid introduced into the outlet manifold via one of the depleting compartments or the concentrating compartments.Type: ApplicationFiled: November 29, 2022Publication date: June 29, 2023Applicant: Evoqua Water Technologies LLCInventors: Joshua Griffis, Li-Shiang Liang, William Lane, Simon P. Dukes, Kris Wy Loon LIM
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Patent number: 11673096Abstract: An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.Type: GrantFiled: July 11, 2018Date of Patent: June 13, 2023Inventors: Michael J. Muse, Joshua Griffis, LI-Shiang Liang, Michael Shaw, Simon P. Dukes
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Publication number: 20230145108Abstract: Methods for treating phosphogypsum-containing water are disclosed. The water may be treated so as to promote precipitation of one or more target constituents and to facilitate downstream membrane treatment. A coagulant may be added to promote phosphate recovery. Ammonia may optionally be removed. Related systems are also disclosed.Type: ApplicationFiled: August 21, 2019Publication date: May 11, 2023Applicant: Evoqua Water Technolgies LLCInventors: Wenxin Du, Hao Dang, George Y. Gu, Michael J. Shaw, Simon P. Dukes, Justin Wayne Higgs
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Publication number: 20230130585Abstract: Methods of treating a waste stream containing perfluoroalkyl substances (PFAS) are disclosed. The methods include directing the waste stream to a dilution compartment of an electrochemical separation device, directing a treatment stream to a concentration compartment of the electrochemical separation device, and applying a voltage across the electrodes to produce a dilute stream substantially free of the PFAS and a concentrate stream. At least one of the waste stream and the treatment stream comprises a water miscible organic solvent. Methods of concentrating PFAS from a wastewater are also disclosed. PFAS concentration systems are also disclosed. The systems include a column comprising an ion exchange resin and an electrochemical separation device having a dilution compartment fluidly connected to an outlet of the column. Methods of facilitating treatment of a waste stream containing PFAS are also disclosed.Type: ApplicationFiled: March 23, 2021Publication date: April 27, 2023Applicant: Evoqua Water Technologies LLCInventors: SIMON P. DUKES, GEORGE GU, SAVVAS HADJIKYRIACOU, YANG CHEN
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Publication number: 20220402794Abstract: A system for treating a source of water contaminated with PFAS is disclosed. The system includes a PFAS separation stage having an inlet fluidly connectable to the source of water contaminated with PFAS, a diluate outlet, and a concentrate outlet and a PFAS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PFAS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PFAS is also disclosed.Type: ApplicationFiled: January 8, 2020Publication date: December 22, 2022Applicant: Evoqua Water Technologies LLCInventors: YANG CHEN, SIMON P. DUKES, ADRIAAN JEREMIASSE, WENXIN DU, SAVVAS E. HADJIKYRIACOU, THOMAS K. MALLMANN
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Patent number: 11511231Abstract: An electrochemical separation device includes a first electrode, a second electrode, a cell stack including alternating depleting compartments and concentrating compartments disposed between the first electrode and the second electrode, an inlet manifold configured to introduce a fluid to one of the depleting compartments or the concentrating compartments an outlet manifold, and one or more of a fluid flow director disposed within the inlet manifold and having a surface configured to alter a flow path of the fluid introduced into the inlet manifold and direct the fluid into the one of the depleting compartments or the concentrating compartments, and a second fluid flow director disposed within the outlet manifold and having a surface configured to alter a flow path of the fluid introduced into the outlet manifold via one of the depleting compartments or the concentrating compartments.Type: GrantFiled: June 20, 2018Date of Patent: November 29, 2022Assignee: Evoqua Water Technologies LLCInventors: Joshua Griffis, Li-Shiang Liang, William Lane, Simon P. Dukes, Kris Wy Loon Lim
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Patent number: 11492279Abstract: An electrochlorination system includes an electrolyzer fluidically connectable between a source of feed fluid and a product fluid outlet, and a sub-system configured to one of increase a pH of the feed fluid, or increase a ratio of monovalent to divalent ions in the feed fluid, upstream of the electrolyzer.Type: GrantFiled: February 27, 2019Date of Patent: November 8, 2022Assignee: Evoqua Water Technologies LLCInventors: Joshua Griffis, Simon P. Dukes, Ll-Shiang Liang, Darren Dale, Michael Shaw, Paul Beddoes, George Y. Gu
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Publication number: 20220259085Abstract: Methods for treating phosphogypsum-containing water are disclosed. The water may be treated so as to promote precipitation of one or more target constituents and to facilitate downstream membrane treatment. A coagulant may be added to promote phosphate recovery. Related systems are also disclosed.Type: ApplicationFiled: August 21, 2019Publication date: August 18, 2022Applicant: Evoqua Water Technologies LLCInventors: Hao Dang, Wenxin Du, George Y. Gu, Michael J. Shaw, Simon P. Dukes