Patents by Inventor Eric H. Dunlop

Eric H. Dunlop 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).

  • Patent number: 8262776
    Abstract: A system and method for producing biofuel from pollutant-fed algae are disclosed. Specifically, the system includes a scrubber with a chamber for receiving a pollutant-contaminated fluid stream. Further, a scrubber solution is received in the chamber for scrubbing the pollutant-contaminated fluid stream. Also, the system includes a bioreactor that is provided with an input port to receive the scrubber solution with pollutants for use as nutrients to support algae cell growth. Further, the system includes an algae separator that removes the algae from the bioreactor and a device for processing the algae into biofuel. In order to recycle the scrubber solution, the algae separator is in fluid communication with the scrubber. With this arrangement, the effluence from the bioreactor may be recycled for use as the scrubber solution.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: September 11, 2012
    Assignee: General Atomics
    Inventors: David A. Hazlebeck, Eric H. Dunlop
  • Patent number: 7763457
    Abstract: A system and method are provided for growing algae with improved photoefficiency. The system includes a bioreactor formed with a conduit for growing algae cells in a medium. Further, the system is provided with a paddle wheel for moving the medium through the conduit at a predetermined fluid flow velocity. In order to ensure that algae cells are efficiently converting light energy to chemical energy, a plurality of barriers is positioned in the fluid stream. Specifically, the barriers are separated by predetermined distances to create von Karman vortices in the medium. As a result, algae cells are sequentially flowed to the surface of the fluid stream to receive light energy for predetermined intervals of time.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: July 27, 2010
    Assignee: General Atomics
    Inventors: Eric H. Dunlop, David A. Hazlebeck
  • Patent number: 7687261
    Abstract: A system and method are provided for producing algae with high oil content. The system includes a chemostat formed with a conduit for growing algae, an input port for feeding a medium into the conduit, and an output port for passing an effluence from the conduit. Further, the chemostat includes a paddlewheel or other device that moves the medium around the conduit. Also, the system includes a plug flow reactor for receiving the effluence from the chemostat. In order to trigger high oil production in the algae, a modified nutrient mix is added to the effluence in the plug flow reactor. Specifically, the modified nutrient mix comprises a limited amount of a selected constituent to trigger oil production in the algae. Further, the system includes an algae separator for removing high oil content algae from the plug flow reactor.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: March 30, 2010
    Assignee: General Atomics
    Inventors: David A. Hazlebeck, Eric H. Dunlop
  • Patent number: 7662616
    Abstract: A system for processing oil from algae is disclosed. Specifically, the system recycles byproducts of the process for use as nutrients during algae growth and oil production. The system includes a conduit for growing algae and an algae separator that removes the algae from the conduit. Also, the system includes a device for lysing the algae and an oil separator to remove the oil from the lysed matter. Further, the system includes a biofuel reactor that receives oil from the oil separator and synthesizes biofuel and glycerin. Moreover, the algae separator, oil separator and biofuel reactor all recycle byproducts back to the conduit to support further algae growth.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: February 16, 2010
    Assignee: General Atomics
    Inventors: David A. Hazlebeck, Eric H. Dunlop
  • Publication number: 20090081742
    Abstract: A system and method for processing algae cells to create biofuel are disclosed. Specifically, the system and method utilize steam to rupture algae cells in order to utilize intracellular oil therein. The system includes a conduit for growing algae cells and a generator for creating steam. Further, the system includes a lysing device that mixes the algae cells and the steam to rupture the algae cells. In order to maximize the efficiency of the lysing process, the system may further include a heat exchanger for preheating the algae cells with the lysed cells. In addition, the system includes a bioreactor to synthesize biofuel from the unbound oil.
    Type: Application
    Filed: September 24, 2007
    Publication date: March 26, 2009
    Inventors: Eric H. Dunlop, David A. Hazlebeck
  • Publication number: 20090081743
    Abstract: A portable system and method for producing biofuel from algae are disclosed. In the portable system, a chemostat and a plug flow reactor formed from plastic bladders are interconnected. Further, an algae separator is in fluid communication with the plug flow reactor for removing algae cells. Also, the system includes a device for processing biofuel from the algae cells. Importantly, the system includes a temperature controller to maintain desired temperatures in the chemostat and plug flow reactor for algae growth and intracellular algae production. In order to further support algae cell growth, the system includes a device for capturing carbon dioxide and delivering the carbon dioxide to the chemostat.
    Type: Application
    Filed: September 24, 2007
    Publication date: March 26, 2009
    Inventors: David A. Hazelbeck, Eric H. Dunlop, Holger H. Streckert
  • Patent number: 7479226
    Abstract: A system and method for removal of uranium and other contaminants from aqueous solution, utilizing live algae, are described. The system includes a bioreactor, in which a reaction mixture of live algae, preferably photosynthetic algae, and contaminated solution are introduced; a means for introducing carbon dioxide gas in the reaction mixture; a means for exposing the reaction mixture to light; means for mixing and impelling the reaction mixture; and means for separating out algae from remediated solution.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: January 20, 2009
    Inventors: Eric H. Dunlop, Ravendra Naidu, Megharaj Mallavarapu
  • Publication number: 20080086939
    Abstract: A system and method are provided for growing algae with improved photoefficiency. The system includes a bioreactor formed with a conduit for growing algae cells in a medium. Further, the system is provided with a means for moving the medium through the conduit at a predetermined fluid flow velocity. In order to ensure that algae cells are efficiently converting light energy to chemical energy, a plurality of barriers is positioned in the fluid stream. Specifically, the barriers are separated by predetermined distances to create von Karman vortices in the medium. As a result, algae cells are sequentially flowed to the surface of the fluid stream to receive light energy for predetermined intervals of time.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: Eric H. Dunlop, David A. Hazlebeck
  • Publication number: 20080086937
    Abstract: A system and method are provided for producing algae with high oil content. The system includes a chemostat formed with a conduit for growing algae, an input port for feeding a medium into the conduit, and an output port for passing an effluence from the conduit. Further, the chemostat includes a paddlewheel or other device that moves the medium around the conduit. Also, the system includes a plug flow reactor for receiving the effluence from the chemostat. In order to trigger high oil production in the algae, a modified nutrient mix is added to the effluence in the plug flow reactor. Specifically, the modified nutrient mix comprises a limited amount of a selected constituent to trigger oil production in the algae. Further, the system includes an algae separator for removing high oil content algae from the plug flow reactor.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: David A. Hazlebeck, Eric H. Dunlop
  • Publication number: 20080090284
    Abstract: A system for processing oil from algae is disclosed. Specifically, the system recycles byproducts of the process for use as nutrients during algae growth and oil production. The system includes a conduit for growing algae and an algae separator that removes the algae from the conduit. Also, the system includes a device for lysing the algae and an oil separator to remove the oil from the lysed matter. Further, the system includes a biofuel reactor that receives oil from the oil separator and synthesizes biofuel and glycerin. Moreover, the algae separator, oil separator and biofuel reactor all recycle byproducts back to the conduit to support further algae growth.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: David A. Hazlebeck, Eric H. Dunlop
  • Publication number: 20080086938
    Abstract: A system and method for producing biofuel from pollutant-fed algae are disclosed. Specifically, the system includes a scrubber with a chamber for receiving a pollutant-contaminated fluid stream. Further, a scrubber solution is received in the chamber for scrubbing the pollutant-contaminated fluid stream. Also, the system includes a bioreactor that is provided with an input port to receive the scrubber solution with pollutants for use as nutrients to support algae cell growth. Further, the system includes an algae separator that removes the algae from the bioreactor and a device for processing the algae into biofuel. In order to recycle the scrubber solution, the algae separator is in fluid communication with the scrubber. With this arrangement, the effluence from the bioreactor may be recycled for use as the scrubber solution.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: David A. Hazlebeck, Eric H. Dunlop
  • Patent number: 7172691
    Abstract: A system and method for removal of uranium and other contaminants from aqueous solution, utilizing live algae, are described. The system includes a bioreactor, in which a reaction mixture of live algae, preferably photosynthetic algae, and contaminated solution are introduced; a means for introducing carbon dioxide gas in the reaction mixture; a means for exposing the reaction mixture to light; means for mixing and impelling the reaction mixture; and means for separating out algae from remediated solution.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: February 6, 2007
    Inventors: Eric H. Dunlop, Ravendra Naidu, Megharaj Mallavarapu