By Chemical Reduction Patents (Class 210/757)
  • Patent number: 10392319
    Abstract: Manage sulfur present as sulfur or a sulfur compound in a hydrocarbon feedstream while effecting dehydrogenation of hydrocarbon(s) (e.g. propane) contained in the hydrocarbon feedstream to its/their corresponding olefin (e.g. propylene where the hydrocarbon is propane) without subjecting the feedstream to desulfurization before it contacts a fluidizable dehydrogenation catalyst that is both a desulfurant and a dehydrogenation catalyst and comprises gallium and platinum on an alumina or alumina-silica catalyst support with optional alkali or alkaline earth metal such as potassium. Contact with such a catalyst yields a desulfurized crude olefin product that corresponds to the hydrocarbon and has a reduced amount of sulfur or sulfur compounds relative to the sulfur or sulfur compounds present in the hydrocarbon feedstream prior to contact with the catalyst.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: August 27, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Matthew T. Pretz, Lin Luo, Brien A. Stears, Mark W. Stewart
  • Patent number: 9926214
    Abstract: Methods for the use of peracid compositions having decreased hydrogen peroxide concentration for various water treatments, including oil- and gas-field operations, and/or other aseptic treatments are disclosed. In numerous aspects, peracetic acid is the preferred peracid and is treated with a peroxide-reducing agent to substantially reduce the hydrogen peroxide content. Methods for using the treated peracid compositions for treatment of drilling fluids, frac fluids, flow back waters and disposal waters are also disclosed for improving water condition, reducing oxidizing damage associated with hydrogen peroxide and/or reducing bacteria infestation.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 27, 2018
    Assignee: Ecolab USA Inc.
    Inventors: Victor Keasler, Renato De Paula, Junzhong Li, David D. McSherry, Brandon Herdt, Richard Staub, Robert J. Ryther
  • Patent number: 9718715
    Abstract: Provided is a water treatment device that suppresses the degradation of electrodes in a capacitive de-ionization treatment section and is capable of maintaining high water treatment capability. The water treatment device includes an activated carbon treatment section that receives an inflow of water having a total organic carbon concentration of 100 mg/l or less and adsorbs and removes organic matters contained in the water; and, on the downstream side of the activated carbon treatment section, a capacitive de-ionization treatment section including a pair of electrodes to which voltages having polarities opposite to each other are applied, a flow path, and ion exchange membranes. Ions contained in the water are adsorbed to the electrodes with voltages applied thereto, and voltages reverse to the voltages at the time of ions adsorption are applied to the electrodes to release the ions from the electrodes.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: August 1, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS ENVIRONMENTAL SOLUTIONS, LTD.
    Inventors: Kazuhide Kamimura, Hozumi Otozai, Kosuke Shigiishi, Hideo Suzuki, Hiroshi Nakashoji
  • Patent number: 9579602
    Abstract: Embodiments described herein generally relate to apparatus and methods for reducing CO2 from flue gas. Methods may include performing a chemisorption process in a first reactor comprising using at least a chemisorption solution comprising a sorbent. Methods may also include performing a desorption process treating the chemisorption solution with a powdered desorption catalyst after the chemisorption process has been performed.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: February 28, 2017
    Assignee: UNIVERSITY OF WYOMING
    Inventors: Maohong Fan, Abdulwahab Tuwati, Mohammed Assiri
  • Patent number: 9217540
    Abstract: Dissolved oxygen in alcohol is efficiently removed with a simple configuration. Device for removing dissolved oxygen in alcohol has a hydrogen-occluding metal catalyst in which hydrogen is occluded, the catalyst being charged in a device. Dissolved oxygen is removed from alcohol that contains the dissolved oxygen by bringing the alcohol into contact with the hydrogen-occluding metal catalyst. A method of removing dissolved oxygen in alcohol has removing dissolved oxygen from alcohol that contains the dissolved oxygen by bringing the alcohol into contact with a hydrogen-occluding metal catalyst which occludes hydrogen.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: December 22, 2015
    Assignee: ORGANO CORPORATION
    Inventors: Masami Murayama, Hiroshi Sugawara, Kazushige Takahashi
  • Patent number: 9102542
    Abstract: The method of producing activated carbon from fuel oil includes mixing the fuel oil with an activating chemical at room temperature to produce an activated fuel oil, carbonizing the activated fuel oil to produce activated carbon, and optionally washing the activated carbon produced. The produced activated carbon has high efficiency and it may be activated in a process that requires a comparatively low amount of energy, thus allowing the activated carbon to be regenerated in-situ.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: August 11, 2015
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: Reyad Awwad Khalaf Shawabkeh
  • Patent number: 9039904
    Abstract: The invention relates to a method for treating wastewater containing nitroaromatics and nitrohydroxyaromatics, as for example arises in the production of nitroaromatics or in the production of nitrohydroxyaromatics, by a two-stage method consisting of pre-reduction and wet oxidation.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: May 26, 2015
    Assignee: Bayer MaterialScience AG
    Inventors: Andreas Karl Rausch, Christoph Blöcher
  • Patent number: 9011727
    Abstract: Blending an electrically active, anodically coloring, electrochromic polymer with a non-electrochromic, non-electrically conductive binder polymer greatly enhances the performance of the anodically coloring, electrochromic polymer in an electrochromic device over time. In addition to improved physical characteristics of the blend, e.g., film build, durability etc, the coloristic properties, including color space and color strength, of the device comprising the blend are more durable than when using the neat polymer, and in certain instances, the color space and color intensity provided by the blend is superior to that available from the neat polymer.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: April 21, 2015
    Assignee: BASF SE
    Inventors: Nancy Cliff, David Yale, Deanna Rodovsky, Jennifer Jankauskas
  • Patent number: 8980104
    Abstract: An activated carbon cloth-supported bimetallic Pd—Cu nanocatalyst is disclosed comprising about 1 wt % Pd and about 0.35-0.45 wt % Cu and having a surface Cu/Pd metal ratio of about 8-10 m2/m2. The nanocatalyst is capable of removing nitrate and/or nitrite from wastewater with a high selectivity to nitrogen.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: March 17, 2015
    Assignee: Technion Research and Development Foundation Ltd.
    Inventors: Moshe Sheintuch, Uri Matatov-Meytal
  • Publication number: 20150065339
    Abstract: Catalysts prepared from abundant, cost effective metals, such as cobalt, nickel, chromium, manganese, iron, and copper, and containing one or more neutrally charged ligands (e.g., monodentate, bidentate, and/or polydentate ligands) and methods of making and using thereof are described herein. Exemplary ligands include, but are not limited to, phosphine ligands, nitrogen-based ligands, sulfur-based ligands, and/or arsenic-based ligands. In some embodiments, the catalyst is a cobalt-based catalyst or a nickel-based catalyst. The catalysts described herein are stable and active at neutral pH and in a wide range of buffers that are both weak and strong proton acceptors. While its activity is slightly lower than state of the art cobalt-based water oxidation catalysts under some conditions, it is capable of sustaining electrolysis at high applied potentials without a significant degradation in catalytic current. This enhanced robustness gives it an advantage in industrial and large-scale water electrolysis schemes.
    Type: Application
    Filed: July 2, 2014
    Publication date: March 5, 2015
    Inventors: Aaron J. Bloomfield, Stafford W. Sheehan, Samuel L. Collom, Robert H. Crabtree, Paul T. Anastas
  • Patent number: 8968646
    Abstract: An odor control composition may be dosed to a wastewater treatment system to control hydrogen sulfide levels. The composition may include a sulfide-reducing agent and an oxidizer. Synergy between the compounds of the odor control composition may facilitate efficient reduction of hydrogen sulfide levels. The sulfide-reducing agent and the oxidizer may be present in a single odor control composition or may be dosed to the system separately.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: March 3, 2015
    Assignee: Evoqua Water Technologies LLC
    Inventors: Timothy F. Matheis, David L. Morano, James P. Harshman
  • Patent number: 8961798
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: February 24, 2015
    Assignee: Evoqua Water Technologies LLC
    Inventor: Bruce Lee Coulter
  • Patent number: 8926730
    Abstract: The invention relates to a method for recovering gold by solvent extraction from an acidic chloride-containing aqueous solution or from slurry containing gold-bearing solids using a diester-based reagent that is poorly soluble in water as organic extraction solution. In accordance with the method, gold is extracted extremely effectively, but other precious metals and many other metals quite sparingly. Gold is stripped from the extraction phase with pure water, from which the gold can be reduced either chemically or electrochemically.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: January 6, 2015
    Assignee: Outotec Oyj
    Inventors: Erkki Paatero, Mika Haapalainen
  • Publication number: 20140353258
    Abstract: The present invention relates to method and a system of reducing chromium (VI) from a chromium bearing solution. The reduction of the chromium (VI) is achieved by contacting the chromium bearing solution which comprises chromium (VI) ions in an aqueous solution with iron fibres in an exchange mass under oxidation-reduction potential conditions at a pH of at least 2.5, with entry of iron ions into solution in the aqueous solution and reduction of the chromium (VI) ions to chromium (III) recovered in the exchange mass. A solution substantially free of chromium (VI) ions and total chromium is produced and discharged from the exchange mass.
    Type: Application
    Filed: December 3, 2012
    Publication date: December 4, 2014
    Inventors: Abdelaziz Gherrou, John Riviere
  • Publication number: 20140305882
    Abstract: Described herein is a liquid filtration device is disclosed comprising a fluid conduit fluidly connecting a fluid inlet to a fluid outlet; and a water filtration medium disposed in the fluid conduit; the water filter medium comprising a metal-containing particulate, wherein the metal-containing particulate comprises a thermolysis product of a metal carboxylate; and methods of removing chloramines from aqueous solutions.
    Type: Application
    Filed: December 13, 2012
    Publication date: October 16, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Meredith McMurdo Doyle, Mark R. Stouffer, Thomas E. Wood
  • Publication number: 20140263096
    Abstract: The present invention provides a liquid handling system comprising a reactor, wherein the reactor is structured such that it contains a gaseous phase and an aqueous phase, both phases being in contact with a heterogeneous hydrogenation catalyst immobilised or suspended within the aqueous phase, wherein the gaseous phase comprises hydrogen and wherein the aqueous phase comprises (i) a solution of amines; and (ii) nitrosamine and/or nitramine compounds resulting from amine-based gas sweetening processes. The invention further relates to a process for in-situ destruction of compounds in the aqueous phase from a scrubber system, wherein the process comprises contacting the aqueous phase with a gas phase comprising hydrogen and a heterogeneous catalyst, wherein the aqueous phase comprises (i) a solution of amines; and (ii) nitrosamine and/or nitramine compounds resulting from amine-based gas sweetening.
    Type: Application
    Filed: June 13, 2012
    Publication date: September 18, 2014
    Applicant: SINVENT AS
    Inventors: Kolbjørn Zahlsen, Bernd Wittgens, Aslak Einbu
  • Publication number: 20140227368
    Abstract: The present invention includes a method for scavenging nitric oxide. The method includes contacting the nitric oxide with cerium oxide nanoparticles having a low 3+/4+ ratio.
    Type: Application
    Filed: February 14, 2013
    Publication date: August 14, 2014
    Applicant: University of Central Florida Research Foundation Inc.
    Inventors: William Self, Sudipta Seal, Janet Dowding
  • Publication number: 20140224741
    Abstract: A method of decreasing the concentration of certain contaminants in liquids by the chemical reduction of the contaminant using a hydride. A suitable reactor is charged with the contaminated liquid. An amount of catalyst and then an amount of hydride are added to the reactor. The hydride reacts with the contaminant in the liquid, chemically reducing and thus destroying a portion of the contaminant and thereby reducing the concentration of the contaminant in the liquid. Additional hydride can be added to further reduce the concentration to meet a desired level.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 14, 2014
    Applicant: BluFlow Technologies, Inc.
    Inventors: William A. Farone, Shane L. Palmer, Miguel A. Rivers, Christian Taylor, Dwayne Chong
  • Patent number: 8771593
    Abstract: Disclosed is a method of controlling a real-time oxidation-reduction potential in a hot water system to inhibit corrosion in the hot water system. The method includes defining one or more operational protective zones in the hot water system. One or more of the operational protective zones includes an oxidation-reduction potential probe that is operable to measure a real-time oxidation-reduction potential in the hot water system at operating temperature and pressure. The probe transmits the measured real-time potential to the controller, which assesses and interprets the transmitted potential to determine whether it conforms to an oxidation-reduction potential setting. If the measured potential does not conform the oxidation-reduction potential setting, the controller is operable to feed or remove one or more active chemical species into or from the hot water system and further operable to change at least one system parameter.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: July 8, 2014
    Assignee: Nalco Company
    Inventors: Peter D. Hicks, David A. Grattan
  • Patent number: 8764988
    Abstract: A treatment system for degrading chlorinated dense non-aqueous phase liquids (DNAPLs) is disclosed. The treatment system comprises a solvent system and hydrophobic zero valent irons distributed in the solvent system. In addition, the method of remediation of groundwater is also disclosed by using the treatment system.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: July 1, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Hsin-Lan Hsu, Chien-Yi Liao, Sun-Yuan Tzeng
  • Patent number: 8753522
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: June 17, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventor: Bruce Lee Coulter
  • Patent number: 8741155
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: June 3, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventor: Bruce Lee Coulter
  • Patent number: 8734653
    Abstract: A mercury remediation method and apparatus for reducing mercury levels in water to a nanogram per liter level that uses four treatment steps: (1) chelation; (2) oxidation; (3) reduction; and (4) air stripping, vapor/liquid separation. There is a fifth step in the process, which does not involve the wastewater. It is to scrub the stripper air of the volatile mercury in an off-gas adsorption unit or to condense volatile mercury in a cryogenic mercury trap.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 27, 2014
    Inventor: Terrence W. Aylesworth
  • Patent number: 8721899
    Abstract: Provided are methods and systems for continuously producing low concentrations of chlorine dioxide from dilute solutions of sodium chlorite. The low concentrations of chlorine dioxide produced allow for reduced exposure risk with direct application of the chlorine dioxide stream. The incorporation of a suitable chlorine dioxide detector permits continuous monitoring and control of chlorine dioxide production ensuring that the process stays within regulatory guidelines. Pretreatment of reaction water is preferred for achieving suitable conversion rates of the low concentrations of chlorite to chlorine dioxide.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: May 13, 2014
    Assignee: ChemTreat, Inc.
    Inventors: Jack Bland, Douglas McIlwaine, John Richardson, Michael Burke
  • Patent number: 8668832
    Abstract: Methods, apparatus and systems for treating wastewater onboard small marine vessels. A pre-determined volume of wastewater generated onboard the vessel is mixed with a larger volume of seawater. This mixture is disinfected and subjected to further oxidation. The excess oxidants are neutralized and the treated effluent is discharged overboard the vessel.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: March 11, 2014
    Assignee: Severn Trent de Nora, LLC
    Inventors: Rudolf Matousek, Dana Casbeer, David Hill, Rubin Bariya
  • Publication number: 20140054243
    Abstract: A system for treating ballast water in ballast tanks onboard vessels is provided. The system comprises one or more ballast tanks, a circulation pump circulating or recirculating, via a tubing, ballast water from and to the one or more ballast tanks, a nitrogen and/or carbon dioxide generator connected to the tubing on the delivery side of the recirculation pump in such a manner that nitrogen and/or carbon dioxide can be supplied to the ballast water, and one or more nozzle heads functionally connected to the tubing and arranged in one or more ballast tanks. The one or more nozzle heads comprises at least one nozzle for injecting the gas-containing water into the ballast tanks. At least one nozzle is configured for powered rotation about a first and a second axis which is perpendicular or not perpendicular to the first axis to the effect that a three-dimensional mixer pattern is produced.
    Type: Application
    Filed: January 27, 2012
    Publication date: February 27, 2014
    Applicant: BAWAT A/S
    Inventor: Jan Stumpe Hummer
  • Publication number: 20140042086
    Abstract: The present invention relates to a method for improving a wastewater purification process for a wastewater stream containing organic materials, raw sludge, a plurality of mercaptans, grit and grease wherein the raw sludge is thickened in the wastewater stream by injecting polymers. The method includes a step of injecting an additive agent prior to thickening the raw sludge to reduce odor produced by the organic materials and the mercaptans.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Inventors: Dan Weber, Nick Lionas, Ron Kress
  • Publication number: 20140030797
    Abstract: Accelerated dechlorination of soil and water contaminated with chlorinated solvents in situ is achieved by delivering ferric ammonium citrate into the soils and/or water. The induction of ferric ammonium citrate into sulfate-rich reducing conditions initiates a combined abiotic and biotic mechanism for the dechlorination of subsurface contaminants. Initial and rapid removal of chlorinated solvents is achieved by way of reductive transformation, a mechanism utilizing the creation of an iron-bound soil mineral (pyrite) followed by stimulating conditions for enhanced biological natural attenuation.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 30, 2014
    Inventor: Michael Scalzi
  • Patent number: 8580122
    Abstract: A hybrid chemical/mechanical water treatment plant and method employing rapid sulfur dioxide chemical disinfection and dewatering technology in conjunction with lime and oxidization/reduction agents to removal pharmaceuticals and personal care products from waters to meet operating constraints and environmental permitting restrictions and siting limitations for water treatment.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: November 12, 2013
    Assignee: Earth Renaissance Technologies, LLC
    Inventor: Marcus G. Theodore
  • Patent number: 8574441
    Abstract: A method for providing for the use of underground aquifers for water storage for municipalities or recharge. Water is treated and injected for storage in the aquifer by the addition of a small amount of a sulfide compound to remove dissolved oxygen and prevent dissolution of negative valence sulfur bearing minerals, such as pyrite, in the subsurface. The stored water may be subsequently withdrawn from the aquifer and treated to remove residual amounts of sulfide ions. The withdrawn water being suitable as potable water, irrigation water, industrial use water, and aquifer water level enhancement water.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: November 5, 2013
    Assignee: Entrix, Inc.
    Inventor: Mark S. Pearce
  • Patent number: 8557118
    Abstract: In one embodiment, a grey water treatment system includes an oxidation reactor for oxidizing grey water. The grey water treatment system also includes a biological reduction and precipitation system with microbes designed to remove one or more target components from the oxidized grey water.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: October 15, 2013
    Assignee: General Electric Company
    Inventors: James Scott Kain, Dinh-Cuong Vuong, David Brian Fraser, Timothy Michael Pickett
  • Patent number: 8557013
    Abstract: The invention is directed to processes for treating biosolids that result in high-value, nitrogen-containing, slow-release, organically-augmented inorganic fertilizer that are competitive with less valuable or more costly conventional commercially manufactured fertilizers. The process involves conditioning traditional waste-water biosolids and processing the conditioned biosolids continuously in a high throughput manufacturing facility. The exothermic design and closed loop control of the primary reaction vessel decreases significantly the amount of power necessary to run a manufacturing facility. The process utilizes green technologies to facilitate decreased waste and enhanced air quality standards over traditional processing plants. The fertilizer produced from recovered biosolid waste is safe and meets or exceeds the United States Environment Protection Agency (USEPA) Class A and Exceptional Quality standards and is not subject to restrictions or regulations.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: October 15, 2013
    Assignee: VitAG Holdings, LLC
    Inventors: Jeffrey C. Burnham, James P. Carr, Gary L. Dahms
  • Publication number: 20130264293
    Abstract: Methods for the use of peracid compositions having decreased hydrogen peroxide concentration for various water treatments, including oil- and gas-field operations, and/or other aseptic treatments are disclosed. In numerous aspects, peracetic acid is the preferred peracid and is treated with a peroxide-reducing agent to substantially reduce the hydrogen peroxide content.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 10, 2013
    Applicant: ECOLAB USA INC.
    Inventors: Victor Keasler, Renato De Paula, Junzhong Li, David D. McSherry, Brandon Herdt, Richard Staub, Robert J. Ryther
  • Publication number: 20130233808
    Abstract: An improved method that requires no electricity or moving parts to increase lime utilization where pebble quicklime (CaO) and/or hydrated lime (Ca(OH)2) is used for mine drainage treatment. Lime utilization at such facilities has been historically poor due to the low solubility, high density, and large particle size of pebble quicklime. This invention takes two passive technologies, a diversion well-inspired MixWell system followed by a TROMPE-driven, air lift mixer for enhancing lime dissolution. It showed an estimated 40 to 57 percent reduction in lime usage.
    Type: Application
    Filed: December 5, 2012
    Publication date: September 12, 2013
    Inventors: Bruce R. Leavitt, Timothy P. Danehy
  • Patent number: 8519061
    Abstract: A controlled release remediation composition or compositions, a method making such composition(s), a method of using such composition(s), and a remediation system including such composition(s) are disclosed. The disclosed controlled release remediation composition or compositions include at least one chemical oxidant agent, optionally, at least two chemical oxidant agents; at least one encapsulant polymer; and, optionally, at least one matrix polymer. The disclosed controlled release remediation composition or compositions are capable of substantially constantly releasing an amount of the at least one chemical oxidant agent, optionally, amounts of the at least two chemical oxidant agents, for example, into an aqueous system such as may be found at a contaminated site, over at least about a one month period up to over about a three month period.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: August 27, 2013
    Assignee: North Carolina A&T State University
    Inventor: Stephanie Luster-Teasley
  • Publication number: 20130199673
    Abstract: The invention is directed to a process to prepare metal nanoparticles or metal oxide nanoparticles by applying a cathodic potential as an alternating current (ac) voltage to a solid starting metal object which solid metal object is in contact with a liquid electrolyte comprising a stabilising cation. The invention is also directed to the use of the nanoparticles as a catalyst.
    Type: Application
    Filed: July 14, 2011
    Publication date: August 8, 2013
    Applicants: STICHTING VOOR FUNDAMENTEEL ONDERZOEK DER MATERIE, UNIVERSITEIT LEIDEN
    Inventors: Alexei Yanson, Marcus Koper, Paramaconi Rodriguez, Nuria Garcia-Araez
  • Publication number: 20130200303
    Abstract: A method of degrading halogenated organic compounds, to use of the method for decontaminating PFOS (perfluorooctanesulfonic acid) and PFOA (perfluorooctanoic acid) contaminated medium, and a composition such as that which is suitable to be applied in said method.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 8, 2013
    Applicant: Arcadis Nederland B.V.
    Inventors: Tessa Alida Pancras, Wim Plaisier, Pieter Jacobus Anna Dols, Jan Adriaan Barbier
  • Patent number: 8496837
    Abstract: A process for affecting reductive conversion reactions in a reactor using the palladized bacterial cellulose immobilized on a support for reductive conversion reactions in a reactor.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: July 30, 2013
    Assignees: Department of Biotechnology, Indian Institute of Technology
    Inventors: Upendra Patel, Sumathi Suresh
  • Patent number: 8496817
    Abstract: A dechlorinator for dechlorinating a stream of water comprises a housing comprising an inlet and an outlet. The housing defines a flow path between the inlet and the outlet. A filter is operatively supported in the housing and located in the flow path. At least one dechlorinating tablet is operatively supported in the housing and located in the flow path downstream of the filter for dechlorinating water flowing from the filter to the outlet.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: July 30, 2013
    Inventor: Erwin Just
  • Publication number: 20130180933
    Abstract: Hydrophobically modified Si-containing polyamines are useful for treating scale in industrial process streams. Preferred hydrophobically modified Si-containing polyamines are particularly useful for treating aluminosilicate scale in difficult-to-treat industrial process streams, such as in the Bayer alumina process streams, nuclear waste streams and kraft paper mill effluent streams.
    Type: Application
    Filed: March 6, 2013
    Publication date: July 18, 2013
    Applicant: CYTEC TECHNOLOGY CORP.
    Inventor: CYTEC TECHNOLOGY CORP.
  • Publication number: 20130134105
    Abstract: Light expanded clay aggregates are described that are prepared by firing and expanding a clay-based material, wherein metals such as palladium, copper or nickel are added to the clay together with iron prior to expansion and firing. The expanded clay aggregates can be used for cleaning of water contaminated with halogenated organic compounds. The latter are chemically degraded to harmless compounds in proximity of the added metals. The aggregates can be used as a reactive medium for treatment of contaminated groundwater, wastewater and landfill leachate.
    Type: Application
    Filed: June 26, 2011
    Publication date: May 30, 2013
    Inventor: Thomas Van Nooten
  • Patent number: 8449778
    Abstract: A method for treating ballast water with sulfurous acid to kill invasive species and remove oxygen from the ballast water to preserve hulls from rusting.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 28, 2013
    Assignee: Earth Renaissance Technologies, LLC
    Inventors: Terry R. Gong, Marcus G. Theodore
  • Publication number: 20130118993
    Abstract: Light expanded clay aggregates are described that are prepared by firing and expanding a clay-based material, wherein metals such as palladium, copper or nickel are added to the clay together with iron prior to expansion and firing. The expanded clay aggregates can be used for cleaning of water contaminated with halogenated organic compounds. The latter are chemically degraded to harmless compounds in proximity of the added metals. The aggregates can be used as a reactive medium for treatment of contaminated groundwater, wastewater and landfill leachate.
    Type: Application
    Filed: July 26, 2011
    Publication date: May 16, 2013
    Inventor: Thomas Van Nooten
  • Publication number: 20130020265
    Abstract: The present invention relates to a method for reduce treating ballast water which has been subjected to a biocidal treatment with a chlorine-based oxidizing agent or an oxygen-based oxidizing agent, by using a tablet or pellet of sodium sulfite.
    Type: Application
    Filed: November 17, 2010
    Publication date: January 24, 2013
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Yoshinori Kamatsuchi, Takao Miyakoshi
  • Publication number: 20130001172
    Abstract: A method and apparatus for treating waste water utilizing two energized agitated electrochemical reaction reactor units (each utilizing approximately 10 amps per gallon) with a reaction time of approximately 5 minutes wherein the first reaction vessel has a pH below 7 and a second reaction vessel has a pH of above the pH of the first reaction vessel and the effluent flows from a first agitated electrochemical reaction vessel to a degassing tank and then flows to a second agitated electrochemical reaction vessel and then to a flocculation tank.
    Type: Application
    Filed: September 7, 2012
    Publication date: January 3, 2013
    Inventor: Dan Prokop
  • Publication number: 20120312746
    Abstract: A method or process for removing perchlorate ions from water includes mixing water containing perchlorate ions with a reducing agent such that the perchlorate ions and the reducing agent undergo an oxidation-reduction reaction. During the oxidation-reduction reaction, perchlorate ions are reduced to chloride ions and the reducing agent is oxidized. The oxidized reducing agent is separated from the water containing chloride ions and the oxidized reducing agent is regenerated and reused in the reduction of the perchlorate ions.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Kashi Banerjee, Charles D. Blumenschein
  • Publication number: 20120285899
    Abstract: The present invention provides a nanopolymetallic reducing agent filler comprising 20%-70% iron powder, 10%-30% tourmaline power, 2%-15% copper power, 3%-10% bamboo charcoal powder, 2%-15% kaoline, 2%-15% magnesite powder, 2%-15% pyrolusite powder, and 10%-30% zeolite powder. All percentages described above are by weight. A process of forming the nanopolymetallic reducing agent filler is also provided, including grinding and ball milling raw materials of each component respectively into powder particles of 10 nm-100 ?m, which are then mixed uniformly by weight percentage and granulated to form a granular mixture, and sintering the granular mixture at high temperature or cold pressing it into a granular filler.
    Type: Application
    Filed: September 7, 2011
    Publication date: November 15, 2012
    Inventors: Liang Shuhong, Wang Meiling
  • Publication number: 20120248372
    Abstract: Systems containing imidazoles or blends of imidazoles and amines are described herein. Methods of their preparation and use are also described herein. The methods of using the systems include the reduction of volatile compounds from gas streams and liquid streams.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 4, 2012
    Applicant: BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA
    Inventor: Jason E. Bara
  • Patent number: 8277726
    Abstract: A steam generation system comprises: an oxygenated water treatment (OWT) sub-system configured to generate water having oxidizing chemistry; a steam generation sub-system configured to convert the water having oxidizing chemistry into steam having oxidizing chemistry; an attemperator or other injection device or devices configured to add an oxygen scavenger to the steam having oxidizing chemistry to generate steam having less oxidizing or reducing chemistry; and a condenser configured to condense the steam having less oxidizing or reducing chemistry into condensed water.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: October 2, 2012
    Inventors: Steven C. Kung, Dennis K. McDonald
  • Publication number: 20120211440
    Abstract: A method for treating ballast water with sulfurous acid to kill invasive species and remove oxygen from the ballast water to preserve hulls from rusting.
    Type: Application
    Filed: February 23, 2011
    Publication date: August 23, 2012
    Applicant: Earth Renaissance Technologies, LLC
    Inventors: Terry R. Gong, Marcus G. Theodore