Patents by Inventor Marina Ettl

Marina Ettl 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).

  • Denitrification of saline industrial waste water
    Patent number: 10000399
    Abstract: The present invention concerns a biochemical process for the denitrification of a hypersaline wastewater composition.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: June 19, 2018
    Assignee: Yara International ASA
    Inventors: Hans-Werner Breiner, Thorsten Stoeck, Günther Doppelbauer, Wolfram Franke, Marina Ettl
  • Process and biofilter system for H2S removal from a H2S contaminated energy production gas stream containing methane and use of such a biofilter system
    Patent number: 9890343
    Abstract: The invention relates to a process and a biofilter system (10) for removing H2S from a H2S contaminated energy production gas stream containing methane. The aqueous biofilter system comprises a biofilter (6) having biofilter support material constituting a biofilter bed supporting a humidified biofilm having microorganisms that are capable of oxidizing H2S. The process comprises the steps of contacting the H2S contaminated energy production gas stream with the microorganisms of the humidified biofilm, and oxidation of at least part of the H2S in the H2S contaminated energy production gas stream by the microorganisms, resulting in a H2S depleted energy production gas stream, wherein the process further comprises the step of adding an aqueous nitrate solution to the H2S contaminated energy production gas stream prior to being contacted with the microorganisms, enabling the microorganisms to oxidize the H2S under anoxic conditions.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: February 13, 2018
    Assignee: YARA INTERNATIONAL ASA
    Inventors: Marina Ettl, Wolfram Franke, Werner Van Borm
  • DENITRIFICATION OF SALINE INDUSTRIAL WASTE WATER
    Publication number: 20170081226
    Abstract: The present invention concerns a biochemical process for the denitrification of a hypersaline wastewater composition.
    Type: Application
    Filed: May 13, 2015
    Publication date: March 23, 2017
    Applicant: Yara International ASA
    Inventors: Hans-Werner Breiner, Thorsten Stoeck, Günther Doppelbauer, Wolfram Franke, Marina Ettl
  • PROCESS AND BIOFILTER SYSTEM FOR H2S REMOVAL FROM A H2S CONTAMINATED ENERGY PRODUCTION GAS STREAM CONTAINING METHANE AND USE OF SUCH A BIOFILTER SYSTEM
    Publication number: 20160200996
    Abstract: The invention relates to a process and a biofilter system (10) for removing H2S from a H2S contaminated energy production gas stream containing methane. The aqueous biofilter system comprises a biofilter (6) having biofilter support material constituting a biofilter bed supporting a humidified biofilm having microorganisms that are capable of oxidizing H2S. The process comprises the steps of contacting the H2S contaminated energy production gas stream with the microorganisms of the humidified biofilm, and oxidation of at least part of the H2S in the H2S contaminated energy production gas stream by the microorganisms, resulting in a H2S depleted energy production gas stream, wherein the process further comprises the step of adding an aqueous nitrate solution to the H2S contaminated energy production gas stream prior to being contacted with the microorganisms, enabling the microorganisms to oxidize the H2S under anoxic conditions.
    Type: Application
    Filed: September 18, 2014
    Publication date: July 14, 2016
    Applicant: YARA INTERNATIONAL ASA
    Inventors: Marina Ettl, Wolfram Franke, Werner Van Borm
  • Process to treat industrial wastewater
    Patent number: 9376335
    Abstract: The present invention concerns a process for treatment of industrial waste water containing both easy biodegradable and heavy biodegradable matter wherein the process comprises the two steps of first treating the waste water in a bioreactor wherein a nitrate solution is added and secondly treating the waste water in a chemical oxidation step wherein an oxidizer, permanganate, is added.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: June 28, 2016
    Assignee: YARA INTERNATIONAL ASA
    Inventors: Tim Corben, Wolfram Franke, Marina Ettl, Jan Hilmers
  • PROCESS TO TREAT INDUSTRIAL WASTEWATER
    Publication number: 20140027377
    Abstract: The present invention concerns a process for treatment of industrial waste water containing both easy biodegradable and heavy biodegradable matter wherein the process comprises the two steps of first treating the waste water in a bioreactor wherein a nitrate solution is added and secondly treating the waste water in a chemical oxidation step wherein an oxidizer, permanganate, is added.
    Type: Application
    Filed: March 26, 2012
    Publication date: January 30, 2014
    Inventors: Tim Corben, Wolfram Franke, Marina Ettl, Jan Hilmers