Including Prior Use Of Additive (e.g., Changing Ph, Etc.) Patents (Class 210/639)
  • Patent number: 10689255
    Abstract: A method for recovering and purifying a waste sulfuric acid solution includes steps of: adding a coupling agent (m) to the waste sulfuric acid solution, and mixing uniformly to obtain a mixture (a); adding a coupling agent (n) to the mixture (a), and mixing uniformly to obtain a mixture (b); and adding a synergistic agent to the mixture (b), thoroughly stirring and filtering to obtain a purified sulfuric acid solution. The method adds the coupling agent and the synergistic agent to the waste sulfuric acid, and a removal rate of the heavy metal ions in the waste sulfuric acid can reach 99%. The purified sulfuric acid solution can be recycled. The method is simple to operate, and can remove a wide variety of heavy metal ions such as copper, zinc, lead, mercury, nickel, iron, cadmium and manganese in the waste sulfuric acid.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: June 23, 2020
    Assignee: Xiangtan University
    Inventors: Jing Cao, Chengkang Hu, Junfeng Zhang, Yan Huang
  • Patent number: 10501693
    Abstract: A method for producing liquid fuel components from renewable oil. A fresh feedstock including saturated fatty acids is subjected to dilution by an organic lipophilic solvent. The solvent has a low phosphorus and metal impurity content, less than 5 ppm and less than 10 ppm, respectively. Dilution is performed before and/or during purification by at least one pretreatment process for removal of phosphorus and metal impurities. Subsequently, the resulting purified feedstock is fed into at least one post-treatment process suitable for producing liquid fuel components.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 10, 2019
    Assignee: NESTE OYJ
    Inventors: Marko Laakkonen, Jukka Myllyoja, Blanka Toukoniitty, Mervi Hujanen, Ari Saastamoinen, Alpo Toivo
  • Patent number: 10464024
    Abstract: A water treatment device is provided with a separation membrane device having a separation membrane for concentrating dissolved components and dispersed components from water to be treated and obtaining permeated water; a first deposit detecting unit provided in a non-permeated water branch line branched from a non-permeated water line for discharging non-permeated water in which dissolved components and dispersed components have been concentrated, using part of the non-permeated water that has branched off as a detection liquid, and having a first separation membrane for detection in which the detection liquid is separated into permeated water for detection and non-permeated water for detection; and first flow rate measuring devices for separated liquid for detection that measure the flow rates of one or both of the permeated water for detection and the non-permeated water for detection separated by the first separation membrane for detection.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: November 5, 2019
    Inventors: Hideaki Sakurai, Hideo Suzuki, Hiroshi Nakashoji, Shigeru Yoshioka, Susumu Okino, Noriaki Senba, Shigehiro Sugiyama, Masayuki Eda, Hyota Abe, Ryo Kamito, Nobuyuki Ukai
  • Patent number: 10457573
    Abstract: A method and an apparatus for processing radioactive wastewater are provided, wherein the radioactive wastewater is processed by using Disc Tube Reverse Osmosis (DTRO) membrane assembly, thereby achieving both the effects of high decontamination factors and high concentration multiples. In said method, the radioactive wastewater passes through the first-stage membrane assembly and the second-stage membrane assembly in sequence to obtain the second-stage clear water, and the first-stage concentrated water flowing out of the first-stage membrane assembly enters the third-stage membrane assembly to obtain concentrate.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: October 29, 2019
    Inventors: Junfeng Li, Jianlong Wang, Shuli Zhao
  • Patent number: 10450633
    Abstract: Methods of recovering lithium from a lithium source or a lithium-containing material using low pH solutions and membrane technologies to purify and concentrate the recovered lithium. The lithium sources may include a spent lithium-ion battery/cell, a lithium-containing mineral deposit, or other lithium containing materials. The processes described herein recovery the lithium after digestion of the lithium-containing material with a low pH solution through one or more acid-stable, semipermeable membranes.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 22, 2019
    Inventor: Larry Lien
  • Patent number: 10427963
    Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 1, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Mark Charlesworth, Christopher John Kalli, David Glynn Thomas, Wei Shi, Brendan Francis Graham, Zachary Mark Aman, Eric Freemantle May
  • Patent number: 10427069
    Abstract: Disclosed is a process for the alteration of the ratio of the specific gravities of the oil and water phases resulting from the conversion of biomass to liquid products, the reduction of the conductivity and of metals of the product mixture, which each can aid in the removal of solids contained in the oil phase; and a liquid-liquid extraction method for partitioning desirable carbon containing compounds into the oil phase and undesirable carbon containing compounds into the water phase.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 1, 2019
    Assignee: Inaeris Technologies, LLC
    Inventors: Vicente Sanchez, Richard Engelman, J. Christopher Lewis, Brent Moore, Edward J. Smith
  • Patent number: 10392283
    Abstract: A method and apparatus for removing soluble silica efficiently from accompanied water, produced from wells containing calcium ion, soluble silica, and sulfate ion, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, includes adding a magnesium salt to mix with the accompanied water under alkaline conditions to produce insoluble silica and calcium sulfate. A microfiltration (MF) membrane treatment process includes treating a first reaction solution obtained in said magnesium salt adding process, with a microfiltration membrane to separate insolubilized silica and calcium sulfate by filtration. An acid adding process includes adding an acid to and mixing with filtrate obtained in the MF membrane treatment process to render a pH value of the filtrate on the range from 5 to 9 and a negative Langeliar saturation index.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 27, 2019
    Inventors: Shigeki Fujiwara, Eri Watanabe, Yohei Tomida, Koji Fuchigami, Takeshi Tsuji, Yasuhiro Minamizato, Yasuto Ando, Yoshitaka Moriyama
  • Patent number: 10343118
    Abstract: A method for treating water including intaking a first amount of water into a plurality of treatment blocks, treating the first amount of water, outputting aqueous treated water streams from each of the plurality of treatment blocks, separating the aqueous treated water streams from each of the plurality of treatment blocks into aqueous permeate streams and concentrate reject streams, monitoring each of the aqueous permeate streams, controlling the operation of at least one of the plurality of treatment blocks based on predefined water-characteristic tolerances that fall within a predetermined concentration range based on the different qualities of the aqueous permeate streams, combining the aqueous permeate streams of at least two of the plurality of treatment blocks based on the identified characteristics and the predefined water-characteristic tolerances, and outputting the product water stream and the at least one concentrate reject stream.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: July 9, 2019
    Assignee: Water Standard Company (MI)
    Inventors: Lisa Henthorne, Ben Movahed
  • Patent number: 10336638
    Abstract: There is provided herein a system and method for effectively de-scaling source water and producing useful inorganic compounds. As a result of the effective de-scaling, a much needed effective desalination system and method is also provided, which maximizes distillate production, minimizes operating costs, reduces reject brine and produces scale-depleted reject brine. Yet, as a result of the effective de-scaling, an effective flue gas scrubbing system and method is further provided, which not only aids in protecting the environment but also aids in enhancing the performance of the effective desalination system and method.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: July 2, 2019
    Inventor: Mansour S. Bader
  • Patent number: 10246357
    Abstract: A method includes treating a first brine stream including a plurality of minerals with an anti-scalant to produce a treated brine. The first brine stream is provided by a wastewater treatment system. The method also includes directing the treated brine to a first nanofiltration (NF) system disposed downstream from and fluidly coupled to the wastewater treatment system, generating a first NF permeate stream and a first NF non-permeate stream from the treated brine in the first NF system, directing the first NF non-permeate stream to a mineral removal system disposed downstream from and fluidly coupled to the first NF system, and removing the plurality of minerals from the first NF non-permeate stream to generate a first overflow stream in the mineral removal system. The first overflow stream comprises at least a portion of the plurality of minerals.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: April 2, 2019
    Assignee: Enviro Water Minerals Company, Inc.
    Inventor: Paul Steven Wallace
  • Patent number: 10071951
    Abstract: The present application relates to a process for removing an organic compound having one or more positive charges from an aqueous solution, comprising the steps a) provision of the aqueous solution comprising the organic compound and of a hydrophobic organic solution which comprises a liquid cation exchanger, where the liquid cation exchanger is hydrophobic, and where the liquid cation exchanger has one or more negative charges and an overall negative charge, b) contacting the aqueous solution and the organic solution, and c) separating off the organic solution from the aqueous solution.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: September 11, 2018
    Assignee: Evonik Degussa GmbH
    Inventors: Frank Erhardt, Thomas Haas, Martin Roos, Daniel Demicoli, Markus Pötter, Anja Schubert, Jan Christoph Pfeffer, Thomas Tacke, Harald Häger, Andreas Pfennig, Marie-Dominique Przybylski-Freund
  • Patent number: 9994791
    Abstract: Methods for the extraction of intracellular contents from biomass, in particular from algae, are described. The pH level of the algae cell culture is modified and mixed with a surfactant or a combination of surfactants. The algal culture may be subjected to low pressurization using air, inert gas or a gas mixture. Separation of the lipid contents from the treated algae culture is accomplished with an organic solvent or a mixture of organic solvents. The algal debris may be collected at the bottom of the aqueous phase while the biomass is concentrated in the solvent layer.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: June 12, 2018
    Assignee: Board of Trustees of the University of Alabama, for and on behalf of the University of Alabama in Huntsville
    Inventors: Chen Zhang, James E. Smith, Jr.
  • Patent number: 9956538
    Abstract: The invention relates to macro- and micro-liquid marbles (i.e. droplets of liquid with a particulate-based shell), and in particular, to photo-responsive macro- and micro-liquid marbles encapsulating a substance therein. Methods for forming the macro- and micro-liquid marbles, and use of the macro- and micro-liquid marbles, in controlled release applications are also disclosed.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: May 1, 2018
    Assignee: Agency for Science, Technology and Research
    Inventors: Jia Min Chin, Siok Wei Tay, Xiaobai Wang, Jianwei Xu, Andy Tzi Sum Hor
  • Patent number: 9932648
    Abstract: A process for the pretreatment of lignocellulosic biomass is provided. The process generally includes flowing water through a pretreatment reactor containing a bed of particulate ligno-cellulosic biomass to produce a pressurized, high-temperature hydrolyzate exit stream, separating solubilized compounds from the hydrolyzate exit stream using an inorganic nanoporous membrane element, fractionating the retentate enriched in solubilized organic components and recycling the permeate to the pretreatment reactor. The pretreatment process provides solubilized organics in concentrated form for the subsequent conversion into biofuels and other chemicals.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: April 3, 2018
    Assignee: UT-Battelle, LLC
    Inventors: Ramesh R. Bhave, Lee Lynd, Xiongjun Shao
  • Patent number: 9901861
    Abstract: Systems and processes for reducing the energy requirements of an ammonia recovery stripper in a chilled ammonia-based CO2 removal system. The systems and processes include a nanofiltration or reverse osmosis unit for physically separating the washed liquid from a wash vessel configured to receive an ammonia slip feed stream from the main absorber of the chilled ammonia-based CO2 removal system and provide first and second feed streams. Relative to the washed liquid from the wash vessel, the first feed stream has a decreased ammonia molarity whereas the second feed stream has an increased ammonia molarity. The second feed stream is then fed to the ammonia recovery stripper, which reduces steam consumption. The reduced steam consumption translates to significant energy savings, among numerous other advantages. Additionally, the systems and process provide a reduction of equipment sizes related to the stripper unit as may be desired in some applications.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: February 27, 2018
    Assignee: General Electric Technology GmbH
    Inventor: Sanjay Kumar Dube
  • Patent number: 9822021
    Abstract: Separation processes using forward osmosis are disclosed generally involving the extraction of a solvent from a first solution to concentrate a solute therein by using a second concentrated solution to draw the solvent from the first solution across a semi-permeable membrane. One or both of the solute and solvent may be a desired product. By manipulating the equilibrium of the soluble and insoluble species of solute within the second solution, a saturated second solution can be used to generate osmotic pressure on the first solution. The various species of solute within the second solution can be recovered and recycled through the process to affect the changes in equilibrium and eliminate waste products. Enhanced efficiency may result from using low grade waste heat from industrial or commercial sources.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 21, 2017
    Assignee: Yale University
    Inventors: Robert L. McGinnis, Menachem Elimelech
  • Patent number: 9764336
    Abstract: A method of removing entrained salt containing water from an inlet crude oil stream includes the steps of applying an electrical energy to at least one electrode of a plurality of horizontally oriented, spaced-apart electrodes (12, 14, 16) housed within an elongated desalting vessel (10) and distributing an inlet crude oil stream between the electrodes. Each electrode in the plurality of electrodes is housed in an upper portion of the desalting vessel and may be in communication with a first, second and third transformer (42, 44, 46), respectively. The electrical energy may be at a single frequency and voltage or at a modulated voltage. Or, the electrical energy may be a modulated frequency at a single or modulated voltage. Fresh water may be mixed with the inlet crude oil stream either exteriorly or interiorly of the vessel.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: September 19, 2017
    Assignee: Cameron Solutions, Inc.
    Inventors: Gary W Sams, S. Pavankumar B. Mandewalkar
  • Patent number: 9750756
    Abstract: Pharmaceutical compositions are provided comprising one or more orally deliverable dose units, each comprising particulate celecoxib in an amount of about 10 mg to about 1000 mg in intimate mixture with one or more pharmaceutically acceptable excipients. The compositions are useful in treatment or prophylaxis of cyclooxygenase-2 mediated conditions and disorders.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: September 5, 2017
    Assignee: Pfizer Inc.
    Inventors: Danchen Gao, Anthony J. Hlinak, Ahmad M. Mazhary, James E. Truelove, Margaret B. Vaughn
  • Patent number: 9738522
    Abstract: An arrangement (100) for production of fully soluble, pure and well defined mono- or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: August 22, 2017
    Inventors: Yariv Cohen, Patrik Enfält
  • Patent number: 9714934
    Abstract: A multi-phase system includes a phase-separated solution comprising at least two phases, each phase having a phase component selected from the group consisting of a polymer, a surfactant and combinations thereof, wherein at least one phase comprises a polymer, wherein the phases, taken together, represent a density gradient. Novel two-phase, three-phase, four-phase, five-phase, or six-phase systems are disclosed. Using the disclosed multi-phase polymer systems, particles, or other analyte of interest can be separated based on their different densities or affinities.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: July 25, 2017
    Assignee: President and Fellows of Harvard College
    Inventors: Charles R. Mace, Ozge Akbulut Halatci, Ashok A. Kumar, Nathan D. Shapiro, George M. Whitesides
  • Patent number: 9586162
    Abstract: The system and method of the present application improves the efficiency of systems utilizing spiral membranes but can also be applied to systems using other types of membranes. The membrane vessels and membranes are configured in a vertical orientation and a clear path is provided for the removal of product and cleaning chemicals on the retentate and permeate sides of the membrane with hide or no dilution.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: March 7, 2017
    Inventor: Jeffrey Jay
  • Patent number: 9561452
    Abstract: A process for treating drilling fluids which are used during the process of drilling for fossil fuels includes providing a drilling fluid having a continuous hydrocarbon phase, a discontinuous aqueous phase, and a discontinuous solid phase, a polymer solution, at least one coagulant, water, and oil, the oil and water being provided in a volume ratio being from 0.7 to 1.3 times the oil-to-water volume ratio of the drilling fluid. The drilling fluid is mixed with the coagulant, the polymer solution, the oil, and the water in any order to provide an input fluid. The mixture is centrifuged to separate solid materials from the input fluid to provide a treated drilling fluid.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: February 7, 2017
    Inventor: H. Udo Zeidler
  • Patent number: 9498754
    Abstract: A method capable of effectively improving a rejection of a reverse osmosis membrane without remarkably reducing a permeation flux, even if the membrane is seriously degraded. An aqueous solution containing a first organic compound having a molecular weight of less than 200, a second organic compound having a molecular weight of 200 to less than 500, and a third organic compound having a molecular weight of 500 or more is passed through the reverse osmosis membrane. The first organic compound is preferably an amino acid or an amino acid derivative. The total concentration of the first organic compound and the second organic compound and the concentration of the third organic compound are each preferably 1 to 500 mg/L.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: November 22, 2016
    Inventors: Takahiro Kawakatsu, Tetsuya Aoki, Kunihiro Hayakawa
  • Patent number: 9492794
    Abstract: An object of the present invention is to provide a porous hollow fiber membrane for the treatment of a protein-containing liquid where the substances to be removed such as small-sized virus contained in a solution can be efficiently separated and removed and, at the same time, useful substances to be recovered such as protein can be efficiently permeated and the decrease in the permeation characteristics thereof with elapse of time is small. The porous hollow fiber membrane for the treatment of a protein-containing liquid of the present invention is characterized in that the membrane comprises a hydrophobic polymer and a hydrophilic polymer, its permeability for pure water is 10 to 300 L/(h·m2·bar) and, when a 0.5% immunoglobulin solution is subjected to filtration at a constant pressure of 1.0 bar for 60 minutes in dead-end filtration mode, its filtration time and accumulated amount of recovered filtrate are substantially in a linear relation.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: November 15, 2016
    Inventors: Hideyuki Yokota, Toru Uenishi, Hirofumi Ogawa, Satoru Ashitaka, Noriko Monden
  • Patent number: 9440196
    Abstract: A method of making a composite membrane comprising the steps of forming a discriminating layer upon a surface of a porous support by sequentially applying immiscible coating solutions upon the support, wherein one coating solution comprises a crosslinking agent and another coating solution comprises a block copolymer, and the block copolymer comprises sacrificial segments and durable segments including reactive pendent groups which react with the crosslinking agent and form a crosslinked matrix comprising micro-domains of the sacrificial segments, and removing at least a portion of the sacrificial segments to yield pores.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: September 13, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: David J. Moll, H. C. Silvis
  • Patent number: 9227159
    Abstract: A water treatment system combines a microfiltration or ultrafiltration membrane system with a downstream reverse osmosis membrane system. The MF or UF system has multiple trains of immersed membrane modules. The trains are connected to a common permeate pump. The permeate pump discharges directly into the inlet of an RO feed pump. The membrane trains are each subjected to the same suction. The permeate pumps are operated to provide the required flow to the RO feed pump at or above the minimum inlet pressure of the RO feed pump.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: January 5, 2016
    Inventors: Kevin Simon Joseph Dufresne, Denis Joel Marie Guibert
  • Patent number: 9206061
    Abstract: CO2 absorption and desorption affords differing osmotic pressure metal salt osmolyte draw solutions from a common solution. These draw solutions serve a staged forward osmosis membrane process. First stage draw solution is the lowest osmotic pressure osmolyte. First stage concentrate is fed to the second stage and fresh water is externally extracted from the first stage diluted osmolyte. Concentrated first stage osmolyte returns from fresh water extraction, blends and is heated with solid precipitates of the lower osmotic pressure solute. CO2 desorbs from the lower osmotic pressure osmolyte converting to a higher osmotic pressure osmolyte. The higher osmotic pressure osmolyte serves as second stage draw solution to further dewatering the first stage concentrate. Second stage concentrate conveys to external processing or discharge. CO2 absorption converts the dilute high osmotic pressure osmolyte from the second stage to the lower osmotic pressure osmolyte serving as draw solution in the first stage.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: December 8, 2015
    Inventors: James Jeffrey Harris, Upen Jayant Bharwada
  • Patent number: 9186622
    Abstract: A method of separating oxygen from nitrogen involves delivering air to a first side of a membrane comprising a polymer support and a layer of zeolite nanosheet particles with thickness of 2 nm to 10 nm and mean diameter of 5 nm to 5000 nm. The delivered air provides a pressure differential between opposite sides of the membrane, thus causing oxygen in the hollow core to diffuse through the polymer support and the zeolite nanosheet layer to the second side of the membrane. The preferential diffusion of oxygen (compared to diffusion of nitrogen) through the membrane produces nitrogen-enriched air on the first side of the membrane and oxygen-enriched air on the second side of the membrane.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: November 17, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Patent number: 9181170
    Abstract: A method for preparing an unsaturated carboxylic acid comprising (a) preparing an aqueous solution comprising an ammonium salt of hydroxycarboxylic acid and a salt of inorganic acid; (b) contacting the aqueous solution with a cation exchange resin to prepare a conversion aqueous solution comprising a hydroxycarboxylic acid and an inorganic acid; and (c) dehydrating the hydroxycarboxylic acid using the inorganic acid as a catalyst is provided.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: November 10, 2015
    Inventors: Jun Chwae, Nam Soo Park, Moo Ho Lee, Jong Won Kim
  • Patent number: 9108124
    Abstract: The particle components may be collected by using a phenomenon that the particle components in the aqueous phase aggregate at the liquid-to-liquid interface. Both of the particle components and the dissolved components in the aqueous phase may be simultaneously collected if combined with liquid-liquid extraction phenomenon that the dissolved components in the aqueous phase are collected into the solvent phase through the liquid-to-liquid interface. The aggregation phenomenon of the particle components at the liquid-to-liquid interface may be promoted by using an emulsion flow method, a method of applying mechanical external forces (such as stirring and vibrating) or another method combining both the above-mentioned methods.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: August 18, 2015
    Assignee: Japan Atomic Energy Agency
    Inventors: Hirochika Naganawa, Nobuyuki Yanase, Tetsushi Nagano
  • Patent number: 9090491
    Abstract: The removal of boron from saline water based (10) using alkalized NF membrane pretreatment (14) can be adopted at 90% recovery and pH 8-9.5 to produce softened and alkalized NF permeate having SDI<1 with significant reduction in feed boron, TDS and scale-forming ions depending on the properties of the NF membrane polymer structure. NF process (14) acts as a partial desalination process, a softening process, as well as a boron removal process. An additional RO membrane alkalization (16) can be adopted at a wide range of RO feed at pH 8.5-10, resulting in production of desalinated water (18) with almost nil boron content.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: July 28, 2015
    Inventor: Abou Elfetouh Zaki Abd Ellatif
  • Publication number: 20150136696
    Abstract: A process for treating water used in a coal tar process is described. The process involves treating the water with extraction with an extraction agent or adsorption with an adsorbent. The extraction agent includes at least one of amphiphilic block copolymers, cyclodextrins, functionalized cyclodextrins, and soluble cyclodextrin-functionalized polymers, and the adsorbent includes insoluble cyclodextrin-functionalized polymers, exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds.
    Type: Application
    Filed: August 28, 2014
    Publication date: May 21, 2015
  • Patent number: 9028696
    Abstract: Disclosed herein are methods and processes for the recovery of oleaginous compounds from biomass and in particular biomass comprises photosynthetic microorganisms. Also disclosure are oleaginous compounds obtained using the disclosed methods.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: May 12, 2015
    Assignee: Sapphire Energy, Inc.
    Inventors: Richard J. Cranford, Alex M. Aravanis, Stilianos G. Roussis
  • Publication number: 20150122732
    Abstract: A process for treating water containing dissolved organic compounds, including naphthenic acids, for example, oil sands process water, using petroleum coke is provided, comprising: removing petroleum coke from a coking operation; forming a petroleum coke/water slurry by adding the water containing dissolved organic compounds to the petroleum coke; adding a pH-lowering agent to the petroleum coke/water slurry either during slurry formation or after slurry formation to form a treated petroleum coke/water slurry; and allowing the treated petroleum coke/water slurry to mix for a sufficient time in a carbon adsorption reactor to allow the petroleum coke to adsorb a substantial portion of the dissolved organic compounds from the water.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
  • Patent number: 9011691
    Abstract: Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: April 21, 2015
    Assignee: INVISTA North America S.a.r.l.
    Inventors: William J. Tenn, III, Sudhir N. V. K. Aki, Tseng H. Chao, Thomas E. Vos
  • Patent number: 9005450
    Abstract: The invention relates to a method which uses magnetic ionic liquids for the liquid-liquid, liquid-solid, or liquid-gas extraction, wherein the partition of the phases occurs in a magnetic field.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 14, 2015
    Assignee: Proionic Production of Ionic Substances GmbH & Co KG
    Inventor: Roland Kalb
  • Publication number: 20150083663
    Abstract: An apparatus for treating wastewater, such as high-solids contend wastewater from a fracking operation, includes a solids-oil-water separation apparatus coupled to a low-pressure membrane filtration apparatus, with a wastewater recycling conduit coupled at one end to the low-pressure membrane filtration apparatus and coupled at a second end to the solids-oil-water separation apparatus, whereby progressive recycling of membrane concentrate from the low-pressure membrane filtration apparatus through the wastewater recycling conduit, into the solids-oil-water separation apparatus, provides recovery of as much as 97% of the water from a raw wastewater stream.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 26, 2015
    Applicant: Pacific Advanced Civil Engineering, Inc.
    Inventors: Andrew T. Komor, Keisuke Ikehata
  • Publication number: 20150076065
    Abstract: The present invention relates to a method of treating aqueous fluid and apparatus therefor. The method comprises adding an organic compound to a mass of aqueous fluid comprising at least one Kinetic Hydrate Inhibitor (KHI). The organic compound comprises a hydrophobic tail and a hydrophilic head. The hydrophobic tail comprises at least one C—H bond and the hydrophilic head comprises at least one of: a hydroxyl (—OH) group; and a carboxyl (—COOH) group.
    Type: Application
    Filed: August 14, 2014
    Publication date: March 19, 2015
    Inventors: Ross ANDERSON, Saeid Mazloum VAJARI, Bahman TOHIDI
  • Patent number: 8980095
    Abstract: A process for producing ultrapure water, in which a stream of water is purified in a reverse osmosis device, wherein the water stream is subject to pretreatment including splitting the water stream into at least two partial streams, partial exchange of cations present in at least one of the partial streams for H+ ions by a cation exchanger operated in the H+ mode, and complete exchange of the anions present in at least one further of the partial streams for OH? ions by a softener operative in parallel to the cation exchanger, and treating the partial streams treated by the cation exchanger and the softener by at least one anion exchanger operating in the OH? mode, and wherein the water stream obtained from the pretreatment is fed into the reverse osmosis device.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: March 17, 2015
    Assignee: BWT Aktiengesellschaft
    Inventor: Jürgen Johann
  • Publication number: 20150060360
    Abstract: Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes circularly disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes. A feed spacer element having a window-pane pattern can be disposed between adjacent membrane leaves to reduce membrane fouling.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 5, 2015
    Inventors: Michael Sean Motherway, Diem Xuan Vuong, Curtis Roth
  • Patent number: 8968569
    Abstract: A method of wastewater reutilization by which reusable water can be stably obtained from a wastewater. Ozone is added to a wastewater, such as water resulting from sewage treatment, in such a small amount as to result in a residual ozone concentration as measured before membrane filtration of 0.01-1.0 mg/L. Ozone is thus brought into contact with fine solids contained in the wastewater to alter the surface properties of the fine solids so that the solids are easily to coagulate. Thereafter, a coagulant, e.g., PACl, is added from a coagulant addition device (3). The fine solids are coagulated in a coagulation tank (5) or a line mixer and the resultant water is subjected to membrane filtration with an ozone-resistant separation membrane (6) such as ceramic membrane. Thus, reusable water is obtained which has a residual ozone concentration, as measured after filtration through the membrane, less than 0.5 mg/L.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: March 3, 2015
    Assignee: Metawater Co., Ltd.
    Inventors: Shigehiro Suzuki, Motoharu Noguchi, Hideki Kozono
  • Patent number: 8968572
    Abstract: In a device and a process for purifying water which is contaminated with sulphate ions and heavy metal ions, the water is collected in a water reservoir and a substance having basic activity in water is fed to the water reservoir in such a manner that a precipitant having heavy metal ions is precipitated from the water, wherein at least a subquantity of water is taken off from the water reservoir and is separated into pure water which is substantially freed from sulphate ions and heavy metal ions and dirty water which is enriched with sulphate ions and heavy metal ions. The dirty water is at least in part recirculated to the water reservoir, as a result of which a concentration of sulphate ions in the water reservoir is achieved such that a precipitant having sulphate ions is precipitated from the water.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: March 3, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Michael Riebensahm
  • Patent number: 8961795
    Abstract: The invention relates to an apparatus and method for removing molybdenum and other possible impurities from an organic copper-containing extraction solution in connection with the liquid-liquid extraction related to copper recovery. The removal of impurities occurs in one or several removal units built into the organic extraction solution storage tank.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: February 24, 2015
    Assignee: Outotec Oyj
    Inventors: Hannu Laitala, Erkki Paatero, Bror Nyman, Eero Ekman
  • Publication number: 20150048027
    Abstract: A process for treatment of water. Hardness and non-hydroxide alkalinity are removed from feedwaters to an extent sufficient to avoid scaling when concentrated. Sparingly ionizable components in the feedwater are urged toward increased ionization by increasing the pH of the feedwater. In this manner, species such as silica become highly ionized, and (a) their rejection by membranes used in the process is significantly increased, and (b) their solubility in the reject stream from the membrane process is significantly increased. Sparingly ionized species such as boron, silica, and TOC are highly rejected. Recovery ratios of ninety percent (90%) or higher are achievable with many feedwaters, while simultaneously achieving a substantial reduction in cleaning frequency of membranes used in the process.
    Type: Application
    Filed: November 1, 2012
    Publication date: February 19, 2015
  • Patent number: 8945374
    Abstract: A device and mechanism for recommending a water filter in a beverage dispenser is described. A sensor senses qualities of unfiltered water. Another sensor senses qualities of a flavorant container, such as the flavorant contained within the container. Based on the quality of the unfiltered water and the particular flavored beverage desired, the device will recommend a water filter to optimize the flavor of the beverage.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: February 3, 2015
    Assignee: Whirlpool Corporation
    Inventor: Kevin M. Chase
  • Publication number: 20150021267
    Abstract: The present invention relates to a preparation method of a granular oxide adsorbent for water treatment in which a metal oxide is bound to the surface of polymer particles, and more specially, to a preparation method of a granular oxide adsorbent, comprising the following steps: putting polymer particles in an acidic solution; adding polymer particles to a metal oxide aqueous solution and adjusting a pH; and washing and drying the obtained product. Accordingly, a granular oxide adsorbent prepared by the preparation method is provided and is utilized in water treatment and the like.
    Type: Application
    Filed: December 28, 2012
    Publication date: January 22, 2015
    Inventor: Kwang-Ho Choo
  • Publication number: 20150014247
    Abstract: A field water purification system filter is described. The filter includes a water tight enclosure formed between two layers of a polymeric material, an inlet and an outlet are coupled to the water tight enclosure. A filter envelope including a quantity of filter media is inside the water tight enclosure. The water filter having a minimal thickness when not filled with water. The filter envelope is formed by a first set of bonded segments of the two layers of polymeric material. The filter can also include an outer channel having a first side formed by the water tight enclosure and a second side opposite from the first side. The second side can include a second set of bonded segments of the two layers of polymeric material interspersed with a set of nonbonded segments, the nonbonded segments defining openings in an intermittent barrier between the outer channel and the filter media.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Trygve J. Lundquist, Patricia M. Compas-Markman
  • Publication number: 20150004675
    Abstract: The present invention relates to a method for recovering an aqueous phase comprising biomolecules dissolved therein from a multiphasic mixture, comprising at least said aqueous phase and a further liquid phase which is immiscible with said aqueous phase wherein said further liquid phase comprises at least one hydrocarbon compound. The invention further relates to the use of a hydrophilic filtering material, a device comprising such a filtering material or a kit comprising said device for recovering an aqueous phase comprising biomolecules dissolved therein from a mixture of said aqueous phase and at least one hydrocarbon compound comprising further liquid phase which is immiscible with said aqueous phase.
    Type: Application
    Filed: December 4, 2012
    Publication date: January 1, 2015
    Inventors: Jörg Hucklenbroich, Frank Narz
  • Patent number: 8919573
    Abstract: A system for purifying non-potable water to make said water potable includes an intake pump for bringing the non-potable water into the system. At least one centrifugal separator separates the non-potable water into suspended solids, saline water and oil. At least one ozone contact chamber injects ozone into a water stream being injected into at least one of the at least one of the centrifugal separators. A series of progressive filtration components are used for progressively filtering the saline water from the at least one centrifugal separator. The salinization filters then desalinate the progressively filtered saline water.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: December 30, 2014
    Inventor: David Capehart