Patents by Inventor Stephen Robert Vasconcellos
Stephen Robert Vasconcellos 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: 20180170774Abstract: A method of reducing the organic compounds in an aqueous stream by generating an oxidant in-situ using at least one electrolytic cell. The method may comprise contacting at least a portion of the aqueous stream with the electrolytic cell. The electrolytic cell may have at least two electrodes, wherein at least one electrode is a metal electrode and, a power source for powering the at least two electrodes. A water treatment system for generating an oxidant in-situ comprising at least one electrolytic cell. The electrolytic cell may have at least two electrodes, wherein at least one electrode is a metal electrode, and a power source for powering the at least two electrodes. A method of improving the rejection rate of a reverse osmosis membrane using an oxidant generated in-situ. The method may comprise contacting at least a portion of the aqueous stream with the electrolytic cell thereby creating an oxidized aqueous stream.Type: ApplicationFiled: December 31, 2014Publication date: June 21, 2018Inventors: Zijun Xia, Caroline Chihyu Sui, Yida Xu, Xing Zhang, Qunjian Huang, Stephen Robert Vasconcellos, Michael Brian Salerno
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Patent number: 9902626Abstract: A method for removing nitrate ions from a solution is presented. The method includes providing a polymer comprising a protonated amine moiety and an anion derived from an acid having a pKa value greater than about 1. The method further includes contacting the polymer with the solution to bind at least a portion of the nitrate ions in the solution with the polymer, and form a polymer-nitrate complex. The method furthermore includes separating at least a portion of the polymer-nitrate complex from the solution.Type: GrantFiled: July 26, 2013Date of Patent: February 27, 2018Assignee: General Electric CompanyInventors: Hongchen Dong, Larry Neil Lewis, Stephen Robert Vasconcellos
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Publication number: 20160355426Abstract: Methods for treatment of sludge with microwave irradiation for improving its dewatering are provided. In one embodiment, the method includes exposing the sludge to microwave irradiation at an absorbed power density of between about 7 W/ml and about 13 W/ml. Turbidity, total solids content and overall dewaterability are improved when the microwave irradiation treatment is combined with another method for dewatering sludge, such as enzyme treatment, conditioning with a flocculating agent and mechanical dewatering.Type: ApplicationFiled: August 23, 2016Publication date: December 8, 2016Inventors: Vasile Bogdan Neculaes, Stephen Robert Vasconcellos, Brian Christopher Moore, Anthony John Murray, June Klimash, Kenneth Roger Conway, Tracy Lynn Paxon, Michael Brian Salerno, Casey L. Renko
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Publication number: 20160347631Abstract: The present invention concerns a method of reducing fouling and increasing the efficiency of microfiltration and ultrafiltration systems by adding an effective amount of a tannin-based polymer to wastewater containing high concentrations of total dissolved solids (TDS), such as produced water, prior to filtration. Additional pretreatment to separate out and remove coagulated solids before filtration is not required. Typically, the tannin polymer used in treating the process water is a modified tannin comprised of a Mannich reaction product of an amine, an aldehyde, and a tannin.Type: ApplicationFiled: March 28, 2014Publication date: December 1, 2016Inventors: Hongchen DONG, Jason Louis DAVIS, Stephen Robert VASCONCELLOS, Michael Brian SALERNO, Jason NICHOLS
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Patent number: 9371408Abstract: The invention relates to a polymer derived from: reaction of glycidyl (meth)acrylate, allyl glycidyl ether or [(vinyloxy)methyl]oxirane with ammonia or primary amine to obtain a mixture of monomer compounds; reaction of the mixture of monomer compounds with at least one of acrylic acid, vinyl alcohol, vinyl acetate, acrylamide, methylacrylic acid, and methylacrylamide to obtain an intermediate polymer; and reaction of the intermediate polymer with a dithiocarbamic acid salt. Methods for using the polymer are also described herein.Type: GrantFiled: July 6, 2012Date of Patent: June 21, 2016Assignee: GENERAL ELECTRIC COMPANYInventors: Yangang Liang, Wenqing Peng, Xiaoan Xie, Shengxia Liu, Hongchen Dong, Stephen Robert Vasconcellos, Ping Lue, Edward Joseph Urankar, Larry Neil Lewis, Robert James Perry
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Publication number: 20150027949Abstract: A method for removing nitrate ions from a solution is presented. The method includes providing a polymer comprising a protonated amine moiety and an anion derived from an acid having a pKa value greater than about 1. The method further includes contacting the polymer with the solution to bind at least a portion of the nitrate ions in the solution with the polymer, and form a polymer-nitrate complex. The method furthermore includes separating at least a portion of the polymer-nitrate complex from the solution.Type: ApplicationFiled: July 26, 2013Publication date: January 29, 2015Applicant: General Electric CompanyInventors: Hongchen Dong, Larry Neil Lewis, Stephen Robert Vasconcellos
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Publication number: 20140179854Abstract: The invention relates to a polymer derived from: reaction of glycidyl (meth)acrylate, allyl glycidyl ether or [(vinyloxy)methyl]oxirane with ammonia or primary amine to obtain a mixture of monomer compounds; reaction of the mixture of monomer compounds with at least one of acrylic acid, vinyl alcohol, vinyl acetate, acrylamide, methylacrylic acid, and methylacrylamide to obtain an intermediate polymer; and reaction of the intermediate polymer with a dithiocarbamic acid salt. Methods for using the polymer are also described herein.Type: ApplicationFiled: July 6, 2012Publication date: June 26, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Yangang Liang, Wenqing Peng, Xiaoan Xie, Shengxia Liu, Hongchen Dong, Ping Lue, Stephen Robert Vasconcellos, Edward Joseph Urankar, Larry Neil Lewis, Robert James Perry
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Patent number: 8728326Abstract: The invention relates to a polymer comprising structural units of formula and formula wherein R1, R2, R5 and R6 are independently hydrogen, a methyl group, or —COOH, only one of R1 and R2 or R5 and R6 is —COOH; R3 and R7 are independently hydrogen, or a methyl group; R4 is —COOH, —CONH2 or —OH, when R4 is —OH, R1, R2 and R3 are respectively hydrogen; and R8 is —COO, —CONH, or —O—, when R8 is —O—, R5, R6 and R7 are respectively hydrogen. Methods for preparing and using the polymer are also described herein.Type: GrantFiled: March 29, 2011Date of Patent: May 20, 2014Assignee: General Electric CompanyInventors: Wenqing Peng, Yangang Liang, Shengxia Liu, Larry Neil Lewis, Robert James Perry, Stephen Robert Vasconcellos, Su Lu, Guixi Zhang
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Publication number: 20140030306Abstract: A method for remediating bacterially-induced corrosion, environmental damage, and/or process inefficiencies in an industrial process includes identifying an industrial process where target bacteria adversely affect corrosion, environmental impact, and/or process efficiencies. The process also includes identifying the strains of the target bacteria, obtaining a bacteriophage virulent against one or more of the strains of the target bacteria, and exposing the target bacteria to the bacteriophage. The method can utilize an aqueous composition comprising bacteriophage encapsulated in at least one selected from the group consisting of: liposomes, foam, and gel.Type: ApplicationFiled: March 29, 2012Publication date: January 30, 2014Applicant: General Electric CompanyInventors: David Matthew Polizzotti, Cato Russell McDaniel, Claudia C. Pierce, Stephen Robert Vasconcellos
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Patent number: 8557125Abstract: A coagulant composition includes chitosan, methacryloyloxyethyltrimethyl ammonium methyl sulfate and a redox initiator. A coagulant, method for making the coagulant and clarifying wastewater is also provided.Type: GrantFiled: June 7, 2010Date of Patent: October 15, 2013Assignee: General Electric CompanyInventors: Seethalakshmi Suresh, Stephen Robert Vasconcellos, Narain Madhavan, Baraka Kawawa
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Publication number: 20130220920Abstract: A method of conditioning mixed liquor in a membrane bioreactor includes dispersing a treatment additive in the mixed liquor. The treatment additive includes a water soluble block copolymer. Methods for improving flux in a membrane bioreactor and clarifying wastewater are also provided.Type: ApplicationFiled: November 18, 2010Publication date: August 29, 2013Inventors: Sijing Wang, Stephen Robert Vasconcellos, Jianqiu Wang
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Patent number: 8518267Abstract: Clarification of surfactant laden wastewaters of the type commonly encountered in the laundry, dishwashing, textile manufacturing, and metal cleaning and degreasing processes is provided by use of a chitosan/(meth)acrylyloxy alkyl quaternary ammonium salt graft polymer.Type: GrantFiled: December 15, 2011Date of Patent: August 27, 2013Assignee: General Electric CompanyInventors: Stephen Robert Vasconcellos, Matthew D. Mersch, James Quentin Pollett
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Publication number: 20130153512Abstract: Clarification of surfactant laden wastewaters of the type commonly encountered in the laundry, dishwashing, textile manufacturing, and metal cleaning and degreasing processes is provided by use of a chitosan/(meth)acrylyloxy alkyl quaternary ammonium salt graft polymer.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Stephen Robert Vasconcellos, Matthew D. Mersch, James Quentin Pollett
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Publication number: 20130126442Abstract: A method for reducing inorganic contaminant levels during supercritical water oxidation (SCWO) is provided. The method utilizes a fluidized bed reactor wherein inorganic contaminants in the water precipitate out onto the catalyst. The clean water is reclaimed after oxidation of organic contaminants and reduction of inorganic contaminant levels.Type: ApplicationFiled: November 17, 2011Publication date: May 23, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Steve T. Bakas, David M. Polizzotti, Stephen Robert Vasconcellos
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Publication number: 20120152851Abstract: The invention relates to a polymer comprising structural units of formula and formula wherein R1, R2, R5 and R6 are independently hydrogen, a methyl group, or —COOH, only one of R1 and R2 or R5 and R6 is —COOH; R3 and R7 are independently hydrogen, or a methyl group; R4 is —COOH, —CONH2 or —OH, when R4 is —OH, R1, R2 and R3 are respectively hydrogen; and R8 is —COO, —CONH, or —O—, when R8 is —O—, R5, R6 and R7 are respectively hydrogen. Methods for preparing and using the polymer are also described herein.Type: ApplicationFiled: March 29, 2011Publication date: June 21, 2012Inventors: Wenqing Peng, Yangang Liang, Shengxia Liu, Larry Neil Lewis, Robert James Perry, Stephen Robert Vasconcellos, Su Lu, Guixi Zhang
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Publication number: 20110297622Abstract: A coagulant composition includes chitosan, methacryloyloxyethyltrimethyl ammonium methyl sulfate and a redox initiator. A coagulant, method for making the coagulant and clarifying wastewater is also provided.Type: ApplicationFiled: June 7, 2010Publication date: December 8, 2011Inventors: Seethalakshmi SURESH, Stephen Robert Vasconcellos, Narain Madhavan, Baraka Kawawa
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Patent number: 7611632Abstract: Disclosed is a method of conditioning mixed liquor in a membrane bioreactor (MBR) system comprising adding an effective amount of a tannin containing polymer to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding an effective amount of a tannin containing polymer to mixed liquor of the MBR. An effective amount of the tannin containing polymer may be added separately or in combination with other water soluble sludge filterability improvement polymers or sludge filterability improvement inorganic coagulants to the mixed liquor of the MBR. In one embodiment, the tannin containing polymer is a water soluble or dispersible copolymer of a tannin and a cationic monomer. In another embodiment, the tannin containing polymer is a water soluble or dispersible polymer of a tannin, a cationic monomer, and at least one monomer.Type: GrantFiled: November 7, 2008Date of Patent: November 3, 2009Assignee: General Electric CompanyInventors: Sijing Wang, Stephen Robert Vasconcellos, Jianqiu Wang