Patents by Inventor Bruce A. Keiser
Bruce A. Keiser 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: 11285439Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: GrantFiled: October 10, 2018Date of Patent: March 29, 2022Assignee: ECOLAB USA INC.Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
-
Patent number: 10676376Abstract: Methods of modification of zero-valent iron (ZVI) to improve its performance in removing contaminants from a discharge stream. In some aspects, the methods include contacting ZVI-impregnated disks with solutions containing metal cations such as Ni2+, Cu2+, Fe2+, or Pd2+. In some aspects, a wastewater stream is treated with a metal cation solution, then passed over ZVI. Compositions for treating wastewater include ZVI that is modified with a metal cation solution.Type: GrantFiled: September 13, 2017Date of Patent: June 9, 2020Assignee: ECOLAB USA INC.Inventors: Nicholas S. Ergang, Daniel E. Schwarz, Darlington Mlambo, Bruce A. Keiser, Hung Ting Chen
-
Patent number: 10654753Abstract: Additives including sulfur-containing compounds are used in methods of treating synthetic gypsum. The additives can thermally stabilize heavy metals, such as mercury. This thermal stabilization reduces mercury release from the synthetic gypsum. Illustrative, non-limiting examples of sulfur-containing compounds include inorganic sulfides, organic sulfides, organic compounds containing nitrogen and sulfur, organic compounds containing oxygen and sulfur, and polymers containing sulfur.Type: GrantFiled: August 7, 2017Date of Patent: May 19, 2020Assignee: ECOLAB USA INC.Inventors: Bruce A. Keiser, Wayne M. Carlson, Nicholas R. Denny, Jianwei Yuan, Tommy Hung-Ting Chen
-
Patent number: 10569221Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or off-gases having mercury with the use of hypoiodite is disclosed. The hypoiodite is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses hypoiodite in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: GrantFiled: August 19, 2016Date of Patent: February 25, 2020Assignee: ECOLAB USA INC.Inventors: Nicholas R. Denny, Bruce A. Keiser, Wayne M. Carlson
-
Publication number: 20190300429Abstract: Additives including sulfur-containing compounds are used in methods of treating synthetic gypsum. The additives can thermally stabilize heavy metals, such as mercury. This thermal stabilization reduces mercury release from the synthetic gypsum. Illustrative, non-limiting examples of sulfur-containing compounds include inorganic sulfides, organic sulfides, organic compounds containing nitrogen and sulfur, organic compounds containing oxygen and sulfur, and polymers containing sulfur.Type: ApplicationFiled: August 7, 2017Publication date: October 3, 2019Applicant: ECOLAB USA INC.Inventors: Bruce A. Keiser, Wayne M. Carlson, Nicholas R. Denny, Jianwei Yuan, Tommy Hung-Ting Chen
-
Publication number: 20190039019Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: ApplicationFiled: October 10, 2018Publication date: February 7, 2019Applicant: ECOLAB USA INC.Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
-
Patent number: 10173225Abstract: A process of treating a gas stream containing at least one mercury compound or species, the process comprising: applying a composition into said gas stream ahead of a particulate matter collection device, wherein said composition contains a compound having the following formula (SiO2)x(OH)yMzSaF, wherein (i) SiO2 is an optional component; (ii) M comprises at least one of the following metal or metalloid cations: boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; (iii) S comprises a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; (iii) F is an optional component and if present comprises at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coType: GrantFiled: June 19, 2017Date of Patent: January 8, 2019Assignee: ECOLAB USA INC.Inventors: Nicholas S. Ergang, Bruce A. Keiser, Richard Mimna
-
Patent number: 10124290Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: GrantFiled: August 19, 2016Date of Patent: November 13, 2018Assignee: ECOLAB USA INC.Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
-
Publication number: 20180086650Abstract: Methods of modification of zero-valent iron (ZVI) to improve its performance in removing contaminants from a discharge stream. In some aspects, the methods include contacting ZVI-impregnated disks with solutions containing metal cations such as Ni2+, Cu2+, Fe2+, or Pd2+. In some aspects, a wastewater stream is treated with a metal cation solution, then passed over ZVI. Compositions for treating wastewater include ZVI that is modified with a metal cation solution.Type: ApplicationFiled: September 13, 2017Publication date: March 29, 2018Applicant: ECOLAB USA INC.Inventors: Nicholas S. Ergang, Daniel E. Schwarz, Darlington Mlambo, Bruce A. Keiser, Hung Ting Chen
-
Publication number: 20170341086Abstract: A process of treating a gas stream containing at least one mercury compound or species, the process comprising: applying a composition into said gas stream ahead of a particulate matter collection device, wherein said composition contains a compound having the following formula (SiO2)x(OH)yMzSaF, wherein (i) SiO2 is an optional component; (ii) M comprises at least one of the following metal or metalloid cations: boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; (iii) S comprises a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; (iii) F is an optional component and if present comprises at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coType: ApplicationFiled: June 19, 2017Publication date: November 30, 2017Applicant: Ecolab USA Inc.Inventors: Nicholas S. Ergang, Bruce A. Keiser, Richard Mimna
-
Patent number: 9764280Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of hypobromite is disclosed. The hypobromite is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses hypobromite in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: GrantFiled: August 19, 2016Date of Patent: September 19, 2017Assignee: ECOLAB USA INC.Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
-
Patent number: 9682383Abstract: A process of treating a gas stream containing at least one mercury compound or species, the process comprising: applying a composition into said gas stream ahead of a particulate matter collection device, wherein said composition contains a compound having the following formula (SiO2)x(OH)yMzSaF, wherein (i) SiO2 is an optional component; (ii) M comprises at least one of the following: boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; (iii) S comprises a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; (iii) F is an optional component and comprises at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane.Type: GrantFiled: October 7, 2011Date of Patent: June 20, 2017Assignee: Nalco CompanyInventors: Nicholas S. Ergang, Bruce A. Keiser, Richard Mimna
-
Publication number: 20170050147Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or off-gases having mercury with the use of hypoiodite is disclosed. The hypoiodite is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses hypoiodite in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: ApplicationFiled: August 19, 2016Publication date: February 23, 2017Applicant: ECOLAB USA Inc.Inventors: Nicholas R. Denny, Bruce A. Keiser, Wayne M. Carlson
-
Publication number: 20170050145Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of hypobromite is disclosed. The hypobromite is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses hypobromite in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: ApplicationFiled: August 19, 2016Publication date: February 23, 2017Applicant: ECOLAB USA Inc.Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
-
Publication number: 20170050146Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.Type: ApplicationFiled: August 19, 2016Publication date: February 23, 2017Applicant: ECOLAB USA Inc.Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
-
Patent number: 9555420Abstract: A process of treating a gas stream containing mercury is disclosed.Type: GrantFiled: April 8, 2010Date of Patent: January 31, 2017Assignee: Nalco CompanyInventors: Bruce A. Keiser, Nicholas S. Ergang, Richard Mimna
-
Patent number: 9387435Abstract: Disclosed are methods for the on-site manufacture of aqueous-based mercury sorbent compositions prepared using a process water. The sorbent compositions may be aqueous-based materials manufactured from a silica containing precursor, a metal species, and a sulfur-based species, in the presence of a process waters, such as a process water from a coal-fired power plant.Type: GrantFiled: August 20, 2013Date of Patent: July 12, 2016Assignee: Ecolab USA Inc.Inventors: Nicholas S. Ergang, Bruce Keiser, Rebecca Stiles, Brett Showalter
-
Patent number: 9387434Abstract: Disclosed herein are methods for the on-site manufacture of aqueous-based mercury sorbent compositions prepared using a process water. The sorbent compositions may be aqueous-based materials manufactured from a silica containing precursor, a metal species, and a sulfur-based species, in the presence of a process waters, such as a process water from a coal-fired power plant.Type: GrantFiled: August 20, 2013Date of Patent: July 12, 2016Assignee: Ecolab USA Inc.Inventors: Nicholas S. Ergang, Bruce Keiser, Rebecca Stiles, Brett Showalter
-
Patent number: 9328003Abstract: The invention provides methods and compositions for separating metals from a liquid medium, the method uses a copolymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals are disclosed. The treated liquid is then passed through a filtration system. The scavenging effect of the combination of the treatment with the filtration is unexpectedly greater than the sum of its parts.Type: GrantFiled: November 11, 2013Date of Patent: May 3, 2016Assignee: Nalco CompanyInventors: Deepak A. Musale, Daniel E. Schwarz, Paul J. Zinn, Bruce A. Keiser, Jitendra T. Shah
-
Patent number: 9023302Abstract: Methods for facilitating the removal of mercury from flue gases by converting elemental mercury to oxidized mercury and subsequently capturing the oxidized mercury. In one aspect, a method of removing mercury from a mercury-containing flue gas may include the steps of introducing into the flue gas a sulfide source in an effective amount to convert elemental mercury to gaseous oxidized mercury and then capturing the gaseous oxidized mercury.Type: GrantFiled: March 10, 2014Date of Patent: May 5, 2015Assignee: Ecolab USA Inc.Inventors: Bruce A. Keiser, Richard Mimna, Nicholas S. Ergang, Robert W. Dorner, Jianwei Yuan, Hung-Ting Chen