Preparation From Source Of Undetermined Composition (e.g., Industrial Waste, Etc.) Patents (Class 562/513)
  • Patent number: 10458066
    Abstract: A process for the isolation of lignin from black liquor and modification of lignin for use in many plastic applications is disclosed. The isolation of lignin consists of removing all of the non-lignin components from black liquor solution. The non-lignin components including but not limited to organic acids, sugars, and inorganic materials can be removed using either solvent extraction or ion-exchange resin or a combination of both methods. The isolated lignin is water soluble. The non-lignin components can be further isolated and sold or reused in the pulping or lignin isolation processes. The isolated lignin can be further modified in order to meet the needs of the desired plastic application.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: October 29, 2019
    Assignee: ORGANIC CHEMICAL LLC
    Inventors: Kurt Kurple, Nathan Kurple, Michael Kerman
  • Patent number: 9422220
    Abstract: Method and devices for separating and purifying carboxylic acids from fermentation broths comprising carboxylic acid ammonium salts are disclosed herein. The method includes (a) removing biomass and any solids present from the fermentation broth; (b) preparing a solution comprising the desired carboxylic acid and an additional solution comprising ammonium salts, by carrying out simulated moving bed chromatography (SMB); (c) ultra-purifying the solution comprising the desired carboxylic acid from method step (b); (d) concentrating the purified carboxylic acid solution from method step (c); (e) crystallizing the concentrated carboxylic acid solution from method step (d); and (f) concentrating the additional solution comprising ammonium salts from method step (b). A combination of reverse osmosis and evaporation is carried out in method steps (d) and (f), and the vapor from the evaporation of method step (f) is passed into the evaporation of method step (d).
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 23, 2016
    Assignee: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventors: Michael Kleiber, Ulrike Gnabs, Joachim Schulze, Shashank Ghanegaonkar, Helmut Gehrke, Marcel Gawenda
  • Patent number: 9403748
    Abstract: The current disclosure provides methods for producing C2-C5 carboxylic acids from a carbohydrate source. In some embodiments, the method may be: (a) contacting the carbohydrate source with an alkali to form a plurality of intermediate compounds; and (b) reducing the intermediate compounds to form at least one C2-C5 carboxylic acid. In some embodiments, the carbohydrate source may be organic waste.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: August 2, 2016
    Assignee: Empire Technology Development LLC
    Inventor: Fangming Jin
  • Patent number: 9260732
    Abstract: A method comprising: (a) enzymatically processing an O-acetylhomoserine (OAHS) fermentation liquor to produce L-methionine and an acetate source; (b) separating at least a portion of said L-methionine from at least a fraction of said acetate source to form separated L-methionine and a residual liquor comprising an acetate-source; and (c) recovering at least a portion of said acetate source from said residual liquor as recovered acetate.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: February 16, 2016
    Assignee: CJ CHEILJEDANG CORP
    Inventors: Soon Won Hong, In Seok Hwang, Sang Mok Lee, Youn Jae Lee, Jun Young Jung, Aharon Eyal
  • Patent number: 9096800
    Abstract: A torrefaction system includes at least one pool containing a liquid heat transfer agent and a conveyor system. The heat transfer agent provides thermal contact with biomass fragments to heat the biomass fragments into biocoal. The conveyor system transports the biomass through the at least one pool in a first direction and transporting the biocoal in a second direction opposite to the first direction in the at least one pool. The heat transfer agent may be oil, paraffin, or molten salt. The conveyor system transports a continuous stream of the biomass fragments into the pools. The torrefaction apparatus further includes a gas collecting system that collects and separates condensable volatile organic compounds during the torrefaction process.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: August 4, 2015
    Assignees: Academia Sinica
    Inventors: Frank H. Shu, Michael J. Cai, Fen-Tair Luo
  • Patent number: 8957249
    Abstract: A process for removing, isolating and purifying dicarboxylic acid from fermentation broths, which includes the following steps: 1) removal of the biomass and any solids present from the fermentation broth in two successive stages, 2) removal of the dicarboxylic acid solution from the biomass-free fermentation broth by simulated moving bed (SMB) chromatography, 3) fine purification of the dicarboxylic acid solution, 4) multistage evaporative concentration and crystallization, and 5) separation and drying of the crystals.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: February 17, 2015
    Assignee: Thyssenkrupp UHDE GmbH
    Inventors: Wolfgang Tietz, Joachim Schulze
  • Publication number: 20150004663
    Abstract: A method for manufacturing carboxylic acid that includes the following steps is provided. First, subjecting an aqueous mixture, including carboxylic acid and at least 5 wt. % dissolved magnesium chloride, to a forward extraction step using a first organic liquid, including an organic solvent, the organic solvent being selected from the group of C5+ ketones, thereby obtaining an organic carboxylic acid solution and an aqueous waste liquid including magnesium chloride. Second, subjecting the organic carboxylic acid solution to a back extraction step wherein the carboxylic acid is extracted from the organic carboxylic acid solution into an aqueous liquid, thereby obtaining an aqueous carboxylic acid solution and a second organic liquid. Third, subjecting the aqueous waste liquid including magnesium chloride derived from the forward extraction to a thermal decomposition step at a temperature of at least 300° C., thereby decomposing the magnesium chloride to magnesium oxide and HCl.
    Type: Application
    Filed: December 21, 2012
    Publication date: January 1, 2015
    Inventors: André Banier De Haan, Jan Van Krieken, Tanja Dekic Zivkovic
  • Publication number: 20140273118
    Abstract: The present invention provides processes, methods, and systems for converting biomass-derived feedstocks to liquid fuels and chemicals. The method generally includes the reaction of a hydrolysate from a biomass deconstruction process with hydrogen and a catalyst to produce a reaction product comprising one of more oxygenated compounds. The process also includes reacting the reaction product with a condensation catalyst to produce C4+ compounds useful as fuels and chemicals.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: Virent, Inc.
    Inventors: Andrew Held, Elizabeth Woods, Randy Cortright, Matthew Gray
  • Publication number: 20140171681
    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: Application
    Filed: December 5, 2013
    Publication date: June 19, 2014
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Jun CHWAE, Nam Soo Park, Moo Ho Lee, Jong Won Kim
  • Publication number: 20140155650
    Abstract: A process for producing acrylic acid from carbonaceous materials such as biomass. The carbonaceous material, such as biomass, is gasified to produce synthesis gas. The synthesis gas then is subjected to a plurality of reactions to produce acrylic acid.
    Type: Application
    Filed: May 15, 2013
    Publication date: June 5, 2014
    Inventors: Stephane Marie-Rose, Esteban Chornet
  • Patent number: 8716522
    Abstract: Methods are disclosed for producing, from renewable carbon sources, acetic acid in an economical manner. In particular, these methods are directed to the separation and recovery of acetic acid as a substantial product (e.g., as much as 5% by weight or more) of biomass pyrolysis. For a given commercial biomass pyrolysis unit, the acetic acid yield can represent a significant quantity of that used in a major industrial applications such as purified terephthalic acid (PTA) production. According to some embodiments, pyrolysis conditions and/or flow schemes advantageously improve the recovery of acetic acid for a given purity level.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: May 6, 2014
    Assignee: UOP LLC
    Inventor: Joseph Anthony Kocal
  • Publication number: 20140114082
    Abstract: Processes and methods for making biobased tetrahydrofuran products from renewable carbon resources are described herein.
    Type: Application
    Filed: June 8, 2012
    Publication date: April 24, 2014
    Applicant: METABOLIX, INC.
    Inventors: Johan van Walsem, Erik Anderson, John Licata, Kevin A. Sparks, William R. Farmer, Christopher Mirley, Jeffrey A. Bickmeier, Ann D'Ambruoso, Frank Skraly, Thomas M. Ramseier, M. S. Sivasubramanian, Oliver P. Peoples, Yossef Shabtai
  • Patent number: 8703451
    Abstract: A process for the preparation of free carboxylic acids including: A) preparation of carboxylic acid by a biological cell located in an aqueous medium with addition of an amine of formula (I) where R1, R2 and R3, independently of one another, are identical or different, branched or unbranched, optionally substituted hydrocarbon radicals or H; B) for cases where the added amine A) is water-soluble, addition of a water-insoluble amine of formula (I), where, in A) or B), a multiphase system is obtained and the corresponding ammonium carboxylate is formed from the water-insoluble amine and the carboxylic acid; C) removal of the water-insoluble phase; and D) heating of the water-insoluble phase with release of free carboxylic acid.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: April 22, 2014
    Assignee: Evonik Roehm GmbH
    Inventors: Thomas Haas, Thomas Tacke, Achim Marx, Alexander Schraven, Olivier Zehnacker, Eva Maria Wittmann
  • Publication number: 20140107353
    Abstract: The present invention provides methods, reactor systems, and catalysts for converting in a continuous process biomass to less complex oxygenated compounds for use in downstream processes to produce biofuels and chemicals. The invention includes methods of converting the components of biomass, such as hemicellulose, cellulose and lignin, to water-soluble materials, including lignocellulosic derivatives, cellulosic derivatives, hemicellulosic derivatives, carbohydrates, starches, polysaccharides, disaccharides, monosaccharides, sugars, sugar alcohols, alditols, polyols, diols, alcohols, ketones, cyclic ethers, esters, carboxylic acids, aldehydes, and mixtures thereof, using hydrogen and a heterogeneous liquefaction catalyst.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Applicant: Virent, Inc.
    Inventors: Ming Qiao, Randy D. Cortright, John Kania, Elizabeth Woods
  • Publication number: 20130345470
    Abstract: A process for producing high purity 3-hydroxypropionic acid from a fermentation cell broth is described. The 3-hydroxypropionic acid can be converted to a variety of products, such as acrylamide, 3-hydroxypropionic esters, acrylic esters, and 3-HP amide. This process features a high degree of product flexibility, limited or no solvent recycle, discrete waste streams, an efficient water removal process, and efficient recovery of products and solvents with proven and scalable equipment.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 26, 2013
    Applicant: OPX Biotechnologies, Inc.
    Inventors: Robert Tengler, David DeCoster
  • Patent number: 8609893
    Abstract: The present invention relates to the manufacture of bioresourced acrolein and bioresourced acrylic acid from glycerol as starting material and more particularly comes within the scope of a process for the manufacture of acrolein and acrylic acid according to which the reaction for the dehydration of glycerol to give acrolein is carried out and the organic compounds which are heavier than water liable to be present in the various streams of the process arc removed, so as to obtain a stream which can be recycled to the dehydration stage without accumulation of heavy impurities, while minimizing the consumption of water and the discharge of polluted aqueous streams.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: December 17, 2013
    Assignee: Arkema France
    Inventors: Jean-Francois Devaux, Andre Lozowski, Nabil Tlili
  • Publication number: 20130115661
    Abstract: A method for utilizing cultivated plant biomass components, namely cellulose, hemicellose, and lignin, and converting them to value-added biobased chemical products is described herein. The present method provides treatments to obtain a plurality of component streams from cultivated plant biomass for producing derivative products while minimizing waste products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Applicant: THESIS CHEMISTRY, LLC
    Inventors: John R. Peterson, Christopher M. Yost, Jian Wu
  • Publication number: 20120172588
    Abstract: The present invention provides processes for catalytically converting biomass to oxygenated compounds suitable for use in bioreforming processes.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventors: Ming Qiao, Randy D. Cortright, Dick A. Nagaki, Elizabeth Woods
  • Publication number: 20120172622
    Abstract: Methods are disclosed for producing, from renewable carbon sources, acetic acid in an economical manner. In particular, these methods are directed to the separation and recovery of acetic acid as a substantial product (e.g., as much as 5% by weight or more) of biomass pyrolysis. For a given commercial biomass pyrolysis unit, the acetic acid yield can represent a significant quantity of that used in a major industrial applications such as purified terephthalic acid (PTA) production. According to some embodiments, pyrolysis conditions and/or flow schemes advantageously improve the recovery of acetic acid for a given purity level.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicant: UOP LLC
    Inventor: JOSEPH ANTHONY KOCAL
  • Patent number: 8203013
    Abstract: A method for making a fatty acid mineral salt is disclosed where liquid oils containing fatty acids are hydrolyzed using a base solution. A buffering agent is added to the hydrolyzed solution to maintain pH between 8.0 and 11.0 followed by a water soluble metal salt solution which causes a metathesis reaction with the hydrolyzed solution, forming a precipitates of fatty acid metal salts which are glycerin-free. The precipitates are filtered, washed and subsequently dried. The produced fatty acid metal salt is easier for the human body to digest than omega-3 fatty acid in oil form and also is less prone to oxidation and emitting of unpleasant odor.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: June 19, 2012
    Assignee: JH Biotech, Inc.
    Inventors: Hsinhung John Hsu, Sergejs Trusovs, Tatjana Popova
  • Publication number: 20120137572
    Abstract: A method is disclosed including co-processing a biomass feedstock and a refinery feedstock in a refinery unit. The method can include producing a liquid product by catalytically cracking or hyrocracking or hydrotreating a biomass feedstock and a refinery feedstock in a refinery unit having a fluidized reactor. Catalytically cracking can include transferring hydrogen from the refinery feedstock to carbon and oxygen from the biomass feedstock. Hydrocracking or hydrotreating can include transferring hydrogen from a hydrogen source to carbon and oxygen from the biomass feedstock, and to carbon from the refinery feedstock.
    Type: Application
    Filed: May 24, 2010
    Publication date: June 7, 2012
    Applicant: KIOR, INC.
    Inventors: Robert Bartek, Steve Yanik, Paul O'Connor
  • Publication number: 20110137051
    Abstract: The invention relates to a process for the recovery of concentrated high purity formic acid having a concentration of at least 50%, most preferably at least 95%, from biomass wherein an aqueous liquid mixture containing levulinic acid and possibly furfural is subjected to a liquid-liquid extraction step, followed by the recovery of furfural, formic acid and levulinic acid.
    Type: Application
    Filed: April 21, 2009
    Publication date: June 9, 2011
    Applicant: KEMIRA OYJ
    Inventors: Jarmo Reunanen, Pekka Oinas, Timo Nissinen
  • Publication number: 20110028759
    Abstract: A process for recovery and purification of an organic acid from a fermentation broth containing a salt form of the organic acid, comprises the steps of subjecting the fermentation broth to one of ultrafiltration and microfiltration to form a first permeate, concentrating the first permeate to form a concentrated broth, subjecting the concentrated broth to a supported liquid membrane for extraction of lactic acid into a separate stream comprising an extracted solution, subjecting the extracted solution to activated carbon for colour removal, a cation exchange resin for demineralization, and an anion exchange resin for removal of anionic impurities to form a post polished organic acid, filtering the post polished organic acid to remove impurities above a predetermined threshold and concentrating the post polished organic acid to a desired concentration.
    Type: Application
    Filed: June 2, 2010
    Publication date: February 3, 2011
    Applicant: HYFLUX IP RESOURCES PTE LTD
    Inventors: Ooi Lin Lum, Govindharaju Venkidachalam, Yew Chin Neo
  • Patent number: 7867736
    Abstract: The invention relates to a method for preparing a complex of an organic amine and lactic acid in a reactor, characterized in that a water-miscible organic amine is brought into contact with magnesium lactate in an aqueous medium in the reactor to form the complex and precipitated magnesium hydroxide, after which the magnesium hydroxide is separated from the complex.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: January 11, 2011
    Assignee: Purac Biochem B.V.
    Inventor: Jan Van Krieken
  • Publication number: 20100317891
    Abstract: The invention relates to a method for the purification of worts containing optionally neutralised organic acids, which comprises the following steps: (a) removal of a portion at least of the divalent cations and optionally of a portion at least of the monovalent cations by passing the same on a cationic resin; and (b) nano-filtration of the resulting solution.
    Type: Application
    Filed: December 12, 2007
    Publication date: December 16, 2010
    Applicant: APPLEXION
    Inventors: Marc-André Theoleyre, Yvan Bathany
  • Publication number: 20100312006
    Abstract: A process for producing levulinic acid and its esters from biomass is disclosed comprising: (i) feed preparation module characterized by subjecting biomass to a high-temperature refining treatment; (ii) hydrolysis reaction module that facilitates the hydrolysis of biomass to its respective sugars and their subsequent transformation to levulinic acid, formic acid, furfural, and char as well as facilitates the separation of lignin-based char by-product; (iii) product separation and recovery module utilizing a solvent extraction technique such as using furfural by-product as extracting solvent; and (iv) optionally, conversion of levulinic acid to levulinate ester. When desired, the disclosed process may be integrated into existing pulp mills.
    Type: Application
    Filed: June 4, 2010
    Publication date: December 9, 2010
    Applicant: MEADWESTVACO CORPORATION
    Inventors: Michael A. Lake, Steven W. Burton, William Craig Fuller, Robert Sasser, Mathias E. Lindstrom, Jeffrey T. Wheless
  • Publication number: 20100179347
    Abstract: A method for making a fatty acid mineral salt is disclosed where liquid oils containing fatty acids are hydrolyzed using a base solution. A buffering agent is added to the hydrolyzed solution to maintain pH between 8.0 and 11.0 followed by a water soluble metal salt solution which causes a metathesis reaction with the hydrolyzed solution, forming a precipitates of fatty acid metal salts which are glycerin-free. The precipitates are filtered, washed and subsequently dried. The produced fatty acid metal salt is easier for the human body to digest than omega-3 fatty acid in oil form and also is less prone to oxidation and emitting of unpleasant odor.
    Type: Application
    Filed: August 28, 2008
    Publication date: July 15, 2010
    Applicant: JH BIOTECH, INC.
    Inventors: Hsinhung John Hsu, Sergejs Trusovs, Tatjana Popova
  • Publication number: 20100145096
    Abstract: The present invention relates to a process for recovery and purification of lactic acid from a fermentation broth containing lactic acid. The process comprises subjecting the fermentation broth to ultrafiltration and/or microfiltration to form a first permeate, concentrating the first permeate to form concentrated broth, subjecting the concentrated broth to supported liquid membrane for extraction of lactic acid into a separate stream, subjecting the extracted lactic acid solution to activated carbon for removal of colour, subjecting the extracted lactic acid solution to cation exchange resin for deminerization, subjecting the extracted lactic acid solution to anion exchange resin for removal of anionic impurities and concentrating the extracted lactic acid solution to desired concentration. The supported liquid membrane of the present invention contains an organic layer that comprises a earner, a co-extractant, a diluent and a stabilizer.
    Type: Application
    Filed: October 6, 2005
    Publication date: June 10, 2010
    Applicant: HYFLUX IP RESOURCES PTE LTD
    Inventors: Ooi Lin Lum, Govindharaju Venkidachalam, Yew Chin Neo
  • Patent number: 7696378
    Abstract: The present invention relates to a process for decomposing a polymer into a monomer or oligomer by hydrolysis with sub- or supercritical water. The process of the present invention is characterized in that at least a part of the polymer is a polymer comprising a constitutional unit derived from an organic acid in the molecular structure, and the polymer being contacted with sub- or supercritical water in the presence of a water-insoluble base.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: April 13, 2010
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Masaru Hidaka, Takaharu Nakagawa, Toyoyuki Urabe, Tetsuya Maekawa, Hiroyuki Yoshida
  • Patent number: 6822117
    Abstract: The present invention relates to a process for the manufacture of adipic acid, more particularly of adipic acid crystals. It relates more specifically to a process for the treatment of the adipic acid crystals obtained on conclusion of crystallization, which consists in dispersing the adipic acid crystals collected on conclusion of crystallization in a liquid medium, in stirring the said liquid medium and in then separating the said crystals from the said liquid medium and optionally drying them. The form of the crystals is modified in order to obtain pebbles with a substantially smooth surface.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: November 23, 2004
    Assignee: Rhodia Fiber and Resin Intermediates
    Inventors: Albert Felix, Yves Roques
  • Publication number: 20040225149
    Abstract: A problem of the invention is to provide a method of decomposing a Michael addition reaction product formed as a by-product in the production step of a (meth)acrylic ester and recovering (meth)acrylic acid, a (meth)acrylic ester and an alcohol, in which the formation of an olefin as a by-product can be suppressed.
    Type: Application
    Filed: June 21, 2004
    Publication date: November 11, 2004
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei Yada, Kenji Takasaki, Yasushi Ogawa, Yoshiro Suzuki
  • Publication number: 20040220426
    Abstract: A process for producing (meth)acrylic acid or (meth)acrylic acid esters, which comprises a reaction step comprising vapor phase catalytic oxidation of propylene, propane or isobutylene and, if necessary, a reaction step comprising an esterification step, characterized in that at the time when a high boiling mixture (hereinafter referred to as a high boiling material) containing a Michael addition product, is decomposed in a decomposition reactor to recover (meth)acrylic acids, while forcibly imparting a liquid flow in the circumferential direction to a liquid reaction residue in the decomposition reactor, the liquid reaction residue is discharged. In a process for recovering a valuable substance by thermally decomposing the high boiling material containing the Michael addition product of (meth)acrylic acids, it is possible to transfer the decomposition residue from the decomposition reactor to the storage tank without clogging, whereby a long-term continuous operation is possible.
    Type: Application
    Filed: June 3, 2004
    Publication date: November 4, 2004
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Kiyoshi Takahashi, Kenji Takasaki
  • Patent number: 6673951
    Abstract: The present invention provides a process for catalytically hydrogenating unsaturated phytosterol compounds. The catalyst used for such hydrogenation is an alumina-supported transition metal selected from the group consisting of nickel, palladium, platinum, ruthenium, rhodium and mixtures thereof. The process involves the following steps.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: January 6, 2004
    Assignee: Salsbury Chemicals, Inc.
    Inventors: Erik T. Michalson, James D. Devore
  • Patent number: 6656723
    Abstract: The invention relates to a composition and method for controlling odors, the composition containing an activated lignin-derived complex containing a histosol compound, and optionally containing a hydrolytic enzyme, or at least one microorganism capable of providing the hydrolytic enzyme, or a combination of hydrolytic enzyme and at least one microorganism capable of providing the enzyme. The composition can be applied to holding tanks, portable toilets, pulp and paper mills, and other loci giving rise to noxious odors, in particular, to hydrogen sulfide emission.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: December 2, 2003
    Assignee: Organic Products Co.
    Inventor: Jerry D. Phillips
  • Patent number: 6428992
    Abstract: The present invention relates to a process for the purification of 1,3-propanediol from a fermentation medium of a 1,3-propanediol-producing microorganism, comprising 1,3-propanediol and fermentation coproducts consisting at least of glycerol, wherein the 1,3-propanediol-producing microorganism is separated from the other components of the fermentation medium to give a clarified aqueous solution, clarified aqueous solution is passed over a cation exchange resin to give at least one fraction comprising purified 1,3-propanediol and at least one fraction comprising the fermentation coproducts, and the 1,3-propanediol is recovered.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: August 6, 2002
    Assignee: Roquette Freres
    Inventors: Jean-Michel Roturier, Catherine Fouache, Elie Berghmans
  • Patent number: 6395926
    Abstract: The invention provides a method for recovering low-boiling acids from a concentrated solution of the calcium salt of the acid by treating the concentrated solution of calcium salts of the low-boiling acids with a high molecular weight tertiary amine and carbon dioxide.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: May 28, 2002
    Assignee: Texas A&M University System
    Inventors: Mark T. Holtzapple, Richard R. Davison
  • Publication number: 20020037563
    Abstract: A process for recovering carboxylic acids from an aqueous mixture such as a fermentation broth using a solvent containing at least one olefin without the need for first removing the spent microorganism cells is provided. A co-solvent which increases the partition coefficient of the solvent relative to the carboxylic acid may optionally be included.
    Type: Application
    Filed: June 19, 2001
    Publication date: March 28, 2002
    Inventor: Michael D. Staley
  • Patent number: 6284904
    Abstract: Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion exchange column and washing the column. The carboxylic anion is displaced as carboxylic acid by washing the resin with a strong inorganic anion. This method is effective in removing organic carboxylic acids and amino acids from a variety of industrial sources, including fermentation broths, hydrolysates, and waste streams.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: September 4, 2001
    Assignee: Michigan Biotechnology Institute
    Inventor: Elankovan Ponnampalam
  • Patent number: 6262313
    Abstract: This invention provides a method for thermally converting volatile fatty acid (VFA) salts to ketones by mixing dry calcium salts of VFAs with hot heat transfer agent in an evacuated container, thereby causing thermal decomposition of the calcium salts of VFAs to form ketone-containing vapor and calcium carbonate; and separating the ketone-containing vapor from the calcium carbonate and heat transfer agent by condensing a mixture of ketones from the ketone-containing vapor. This invention also provides a process for conversion of VFA salts, produced by anaerobic fermentation of cellulosic biomass, into liquid fuels, volatile fatty acids, aldehydes, alcohols, and lactic acid.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: July 17, 2001
    Assignee: Texas A&M University System
    Inventors: Mark T. Holtzapple, Richard R. Davison
  • Patent number: 6254779
    Abstract: An acidic organics-containing waste water stream (12) derived from for example plant for the production of an aromatic carboxylic acid such as terephthalic acid is treated to allow recovery of alkali and water for recycle to the production process. The treatment comprises adjusting the pH of the waste water stream using an alakaline medium, oxidising (10) the organics content of the stream to convert the same to water, carbon dioxide and (bi)carbonate ions, and supplying the treated stream to a reverse osmosis membrane (28, 30) to produce a retentate containing (bi)carbonate ions and cations derived from the alkaline medium and a permeate which is substantially free of those components. The retentate (46) is recycled for use in adjustment of the pH of the waste water stream and, if desired, water-consuming facilities which can tolerate less pure water.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 3, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ian Charles Jeffery, Christopher Howard Jackson
  • Patent number: 6252109
    Abstract: The invention relates to a method for removing chemically bound formic acid from a material containing the same, in the presence of free formic acid. The method is characterized in that chemically bound formic acid is allowed to react to free formic acid at a normal pressure, at a temperature of less than 100° C., the initial contact free formic acid being about 3 to 20%. The reaction time is typically 0.5 to 4 hours. The material to be treated may be, for instance, material, obtained from a formic-acid-based pulp cooking process, containing cellulose and/or lignin.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: June 26, 2001
    Assignee: Chempolis Oy
    Inventors: Pasi Petteri Rousu, Juha Rainer Anttila, Esa Juhani Rousu
  • Patent number: 6222069
    Abstract: The invention discloses a method for purifying adipic acid in water. More precisely it discloses an improvement in adipic acid crystallization or recrystallization in water, characterised in that the said crystallization or recrystallization is effected in presence of a strong proton acid and/or in the presence of carbon monoxide. This crystallization or recrystallization particularly enables the content of metal catalyst traces in the adipic acid to be reduced.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: April 24, 2001
    Assignee: Rhodia Fiber and Resin Intermediates
    Inventors: Eric B. Henriet, Philippe Leconte, Carl Patois, Robert Perron
  • Patent number: 6204396
    Abstract: A method produces calcium fulvate from naturally-occurring humus material, such as leonardite, or humic shales. The humus material containing solid fulvic acid and solid humic acid is mixed with water and sodium hydroxide for a first selected period of time to form a solution having a pH of approximately 10.0 thereby solubilizing the fulvic acid and the humic acid. The pH of the solution is reduced to approximately 4.5 and is maintained at the approximately pH 4.5 for second selected period of time thereby precipitating the humic acid as a solid while the fulvic acid remains in solution. The fulvic acid solution is separated from the solid humic acid. The pH of the fulvic acid solution is increased to approximately 13 with calcium hydroxide thereby precipitating the solubilized fulvic acid as calcium fulvate.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: March 20, 2001
    Assignee: Electrolytes, Inc.
    Inventors: Hans W. Rasmussen, Lawrence H. Allen
  • Patent number: 6180827
    Abstract: Disclosed is a method for recovering acrylic acid from process or waste water streams in which the stream is vaporized and contacted with a liquid high boiling solvent for acrylic acid, thereby absorbing acrylic acid into the solvent. Mixed trialkylphosphine oxides are a preferred solvent. Acrylic acid is stripped from the solvent with heat and, optionally, stripping gas. It may be separated from any accompanying materials to produce acrylic acid of high purity.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: January 30, 2001
    Assignee: HFM International, Inc.
    Inventors: Fu-Ming Lee, Ronald G. Gualy
  • Patent number: 6174928
    Abstract: A fluorinated oligomer having COOH groups at both end and a &rgr;50° value of 1,000 to 10,000 is produced by swelling a fluorine rubber crosslinking product in an organic solvent, followed by decomposition in the presence of a base and a peroxide. The obtained fluorinated oligomer is soluble in solvent and thus easy to separate from fillers, etc., and can be effectively used as a chain-elongating agent for epoxy resin, isocyanate resin, oxazoline resin, etc.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: January 16, 2001
    Assignee: Nippon Mektron, Limited
    Inventors: Fumiyo Mizuide, Haruyoshi Tatsu, Sergey Vasilievich Sokolov, Michail Vasiliyevich Zhuravlev, Igor Vladimirovich Kokotin, Olga Viktorinovna Blagodatova
  • Patent number: 6153791
    Abstract: The present invention relates to a process for the purification of 2-keto-L-gulonic acid by continuous liquid chromatography using a weakly basic ion exchange resin.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: November 28, 2000
    Assignee: Archer-Daniels-Midland Company
    Inventor: Kevin M. Moore
  • Patent number: 6043392
    Abstract: This invention provides a method for thermally converting volatile fatty acid (VFA) salts to ketones by mixing dry calcium salts of VFAs with hot heat transfer agent in an evacuated container, thereby causing thermal decomposition of the calcium salts of VFAs to form ketone-containing vapor and calcium carbonate; and separating the ketone-containing vapor from the calcium carbonate and heat transfer agent by condensing a mixture of ketones from the ketone-containing vapor. This invention also provides a process for conversion of VFA salts, produced by anaerobic fermentation of cellulosic biomass, into liquid fuels, volatile fatty acids, aldehydes, alcohols, and lactic acid.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: March 28, 2000
    Assignee: Texas A&M University System
    Inventors: Mark T. Holtzapple, Richard R. Davison
  • Patent number: 6022992
    Abstract: A cation exchange membrane mediated acid-salt metathetic process. An aqueous salt solution is placed into a first compartment on one side of the membrane together with an organic amine extractant of limited water miscibility, and an aqueous acid solution is placed into a second compartment on the other side of the membrane. Product acid forms in the first compartment and collects in the organic amine extractant from where it is recovered. The process is particularly suitable for the recovery of a carboxylic acid from its salt.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: February 8, 2000
    Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem
    Inventor: Aharon Eyal
  • Patent number: 5905168
    Abstract: Process for the treatment of a material comprising a polymer, especially a polyamide. The process consists in subjecting the polyamide to hydrolysis in the presence of a hydrolyzing nitrous grouping and transforming the hydrolyzed compounds into diacids. The treatment of a polyamide 6.6 results in the recovery of adipic acid and other diacids corresponding to the participating acid monomer and to the transformation of at least one part of the diamine monomer into diacids.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: May 18, 1999
    Assignee: Rhone-Poulenc Chimie
    Inventors: Emmanuel Dos Santos, Pascal Mettvier, Michel Gubelmann
  • Patent number: 5591877
    Abstract: Fluorinated carboxylic acids can be recovered from materials which contain them by releasing, if necessary, the carboxylic acids with sufficiently strong acids, esterifying the released acids and distilling off the esters. The esters can be advantageously directly hydrolyzed with aqueous ammonia solution to give the corresponding ammonium salts.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: January 7, 1997
    Assignee: Hoechst AG
    Inventors: Reinhold Obermeier, Gunter Stefaniak