Patents by Inventor Birgitte Kiær Ahring

Birgitte Kiær Ahring has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140020679
    Abstract: The present invention provides a method for treatment of lignocellulosic organic waste or biomass, by which the carbohydrates are rendered more available for subsequent hydrolysis, e.g. by means of addition of enzymes or direct fermentation to one or more desired products. The invention more specifically relates to a method comprising a combination of the following process steps: thermal hydrolysis, wet oxidation and wet explosion. The method according to the present invention can operate with undivided or only poorly divided substrate having a high dry matter concentration.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 23, 2014
    Inventors: Birgitte Kiaer Ahring, Jens Munck
  • Patent number: 8512714
    Abstract: Strict anaerobic thermophilic bacterium belonging to the group of Thermoanaerobacter mathranii and mutants and derivatives thereof. The bacterium is particularly suitable for the production of fermentation products such as ethanol, lactic acid, acetic acid and hydrogen from lignocellulosic biomass.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: August 20, 2013
    Assignee: BioGasol IPR ApS
    Inventors: Marie Just Mikkelsen, Birgitte Kiaer Ahring, Tania Ivanova Georgieva
  • Patent number: 8506716
    Abstract: The present invention provides a method for treatment of lignocellulosic organic waste or biomass, by which the carbohydrates are rendered more available for subsequent hydrolysis, e.g. by means of addition of enzymes or direct fermentation to one or more desired products. The invention more specifically relates to a method comprising a combination of the following process steps: thermal hydrolysis, wet oxidation and wet explosion. The method according to the present invention can operate with undivided or only poorly divided substrate having a high dry matter concentration.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: August 13, 2013
    Assignee: Cambi Bioethanol APS
    Inventors: Birgitte Kiær Ahring, Jens Munck
  • Publication number: 20100143988
    Abstract: Strict anaerobic thermophilic bacterium belonging to the group of Thermoanaerobacter mathranii and mutants and derivatives thereof. The bacterium is particularly suitable for the production of fermentation products such as ethanol, lactic acid, acetic acid and hydrogen from lignocellulosic biomass.
    Type: Application
    Filed: May 22, 2007
    Publication date: June 10, 2010
    Applicant: Biogasol IPR APS
    Inventors: Marie Just Mikkelsen, Birgitte Kiaer Ahring
  • Publication number: 20090258404
    Abstract: Production of fermentation products, such as ethanol and lactic acid in biofilm reactors by microorganisms immobilised on sterilised granular sludge.
    Type: Application
    Filed: June 28, 2007
    Publication date: October 15, 2009
    Applicant: BIOGASOL IPR APS
    Inventors: Marie Just Mikkelsen, Birgitte Kiaer Ahring
  • Patent number: 7569146
    Abstract: The disclosed invention is an improved method for treating ethanol distillation still bottoms by recovering, through solids separation and pressurized membrane filtration, potable water from still bottoms for human consumption by bottling or for reuse, and concentrating the solids with beneficial properties recovered such as chemicals, nutrients and medicinals before anaerobic digestion. The invention is an improved process because it can reduce the volume of solids to manage, recovers the water from the fermentation still bottoms while pasteurized, maintains the chemical arid physical properties of solids for beneficial property recovery, improves ethanol and energy efficiency, and results in clean discharge to the environment including carbon dioxide recovery. A bioreactor produces a gas rich in methane fuel from the concentrate to power the pressurized tiltration process and an aqueous ammonia solution to recover or recycle.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: August 4, 2009
    Assignee: NouvEau Inc.
    Inventors: Thomas O. Peyton, Birgitte Kiaer Ahring, Lars Erik Rohold
  • Publication number: 20090178671
    Abstract: The present invention provides a method for treatment of lignocellulosic organic waste or biomass, by which the carbohydrates are rendered more available for subsequent hydrolysis, e.g. by means of addition of enzymes or direct fermentation to one or more desired products. The invention more specifically relates to a method comprising a combination of the following process steps: thermal hydrolysis, wet oxidation and wet explosion. The method according to the present invention can operate with undivided or only poorly divided substrate having a high dry matter concentration.
    Type: Application
    Filed: September 23, 2005
    Publication date: July 16, 2009
    Inventors: Birgitte Kiaer Ahring, Jens Munck
  • Publication number: 20080217249
    Abstract: A method and an equipment for monitoring the syntrophic relations between different parts of a bacterial consortium in the process fluid of a biological process plant, such as a biological gas plant or waste water treatment plant, through a chromatographic measurement of the content of the individual volatile fatty acids in consecutive samples of the process fluid, the samples being acidified and filtered prior to the chromatographic separation
    Type: Application
    Filed: March 28, 2008
    Publication date: September 11, 2008
    Inventors: Peter Frode Pind, Birgitte Kiaer Ahring
  • Patent number: 7267774
    Abstract: The disclosed invention is an improved method for treating ethanol distillation still bottoms by recovering, through solids separation and pressurized membrane filtration, potable water from still bottoms for human consumption by bottling or for reuse, and concentrating the solids with beneficial properties recovered such as chemicals, nutrients and medicinals before anaerobic digestion. The invention is on improved process because it can reduce the volume of solids to manage, recovers the water from the fermentation still bottoms while pasteurized, maintains the chemical and physical properties of solids for beneficial property recovery, improves ethanol and energy efficiency, and results in clean discharge to the environment including carbon dioxide recovery. A bioreactor produces a gas rich in methane fuel from the concentrate to power the pressurized filtration process and an aqueous ammonia solution to recover or recycle.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: September 11, 2007
    Assignee: NouvEau Inc.
    Inventors: Thomas O. Peyton, Birgitte Kiaer Ahring, Lars Erik Rohold
  • Patent number: 7208091
    Abstract: A method for withdrawing and filtering a partial volume of a particle-containing process fluid enclosed in a container, a combination of a container enclosing a process fluid and an assembly for continuously withdrawing and filtering a partial volume of a process fluid and a cross-flow filtering device are disclosed. The method, the assembly and the filtering device can be used in connection with biological process systems, in which the removal of sand, sludge, fibers and alike from partial volumes of the process fluid is necessary before additional filtration and subsequent sample analysis.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: April 24, 2007
    Assignee: Bio Gasol IPR APS
    Inventors: Peter Frode Pind, Birgitte Kiaer Ahring
  • Publication number: 20030175851
    Abstract: A method and an equipment for monitoring the syntrophic relations between different parts of a bacterial consortium in the process fluid of a biological process plant, such as a biological gas plant or waste water treatment plant, through an accurate measurement of the content of the individual volatile fatty acids in consecutive samples of the process fluid, employing small quantities of process fluid.
    Type: Application
    Filed: April 22, 2003
    Publication date: September 18, 2003
    Inventors: Peter Frode Pind, Birgitte Kiaer Ahring
  • Publication number: 20030160007
    Abstract: A method for withdrawing and filtering a partial volume of a particle-containing process fluid enclosed in a container, a combination of a container enclosing a process fluid and an assembly for continuously withdrawing and filtering a partial volume of a process fluid and a cross-flow filtering device are disclosed. The method, the assembly and the filtering device can be used in connection with biological process systems, in which the removal of sand, sludge, fibers and alike from partial volumes of the process fluid is necessary before additional filtration and subsequent sample analysis.
    Type: Application
    Filed: April 22, 2003
    Publication date: August 28, 2003
    Inventors: Peter Frode Pind, Birgitte Kiaer Ahring
  • Patent number: 6555350
    Abstract: A method wherein lignocellulosic biomass materials are converted into combustible fuel products. In particular, the method is a continuous process, involving wet oxidation or steam explosion, for fermentatively converting such biomass materials into ethanol using a process design that permits all or part of the process water from the ethanol fermentation process to be recycled to reduce the consumption of process water. The effluent from the ethanol fermentation step may be subjected to an anaerobic fermentation step generating methane and a water effluent in which the amount of potentially inhibitory substances is at a sub-inhibitory level, which in turn permits all or part of the effluent water from the anaerobic fermentation step to be recycled into the process.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: April 29, 2003
    Assignees: Forskningscenter Riso
    Inventors: Birgitte Kiær Ahring, Anne Belinda Thomsen
  • Publication number: 20020192774
    Abstract: A method wherein lignocellulosic biomass materials are converted into combustible fuel products. In particular, the method is a continuous process. involving wet oxidation or steam explosion, for fermentatively converting such biomass materials into ethanol using a process design that permits all or part of the process water from the ethanol fermentation process to be recycled to reduce the consumption of process water. The effluent from the ethanol fermentation step may be subjected to an anaerobic fermentation step generating methane and a water effluent in which the amount of potentially inhibitory substances is at a sub-inhibitory level, which in turn permits all or part of the effluent water from the anaerobic fermentation step to be recycled into the process.
    Type: Application
    Filed: May 1, 2001
    Publication date: December 19, 2002
    Inventors: Birgitte Kiaer Ahring, Anne Belinda Thomsen