Patents by Inventor Thomas P. McCullough
Thomas P. McCullough 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).
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Patent number: 10507347Abstract: A method of treating, stabilizing, precipitating, or otherwise removing heavy metal ions contained in a contaminated media, which method includes: providing a sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; contacting said contaminated media containing heavy metal ions with the sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; and allowing the contaminated media containing the heavy metal ions to react with said sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance, such that the contaminated media containing heavy metal ions form single or mixed metal-sulfide precipitates or co-precipitates.Type: GrantFiled: September 19, 2017Date of Patent: December 17, 2019Assignee: Redox Technology Group, LLCInventors: Thomas P. McCullough, Gary Joel Meyer
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Publication number: 20180078805Abstract: A method of treating, stabilizing, precipitating, or otherwise removing heavy metal ions contained in a contaminated media, which method includes: providing a sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; contacting said contaminated media containing heavy metal ions with the sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; and allowing the contaminated media containing the heavy metal ions to react with said sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance, such that the contaminated media containing heavy metal ions form single or mixed metal-sulfide precipitates or co-precipitates.Type: ApplicationFiled: September 19, 2017Publication date: March 22, 2018Inventors: Thomas P. McCullough, Gary Joel Meyer
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Patent number: 9808756Abstract: A liquid suspension comprised of ferrous sulfide particles and method of using the same for the removal of selenium from industrial gas. Said liquid suspension may be (1) directly injected, or (2) coated onto or into a substrate and then injected into an industrial gas containing selenium to remove said selenium from the industrial gas stream in a dry scrubber system. Said liquid suspension of ferrous sulfide particles may also be used to remove selenium contained in industrial gases in a wet scrubber system.Type: GrantFiled: August 26, 2016Date of Patent: November 7, 2017Assignee: Redox Technology Group, LLCInventors: Gary J. Meyer, Thomas P. McCullough, Anthony J. Kriech
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Publication number: 20170144895Abstract: A method of reducing the mobility of metal contaminates in mediums such as soil, groundwater, sludge, etc. that involves contacting the mediums with a reagent that is a ferrous sulfide suspension that contains at least FeS and Al(OH)3. The reagent is produced by reacting a solution that contains at least NaAlO2 and NaOH with a solution that contains FeCl2, HCl and water to form a reaction mixture that contains Fe2+, Cl?, Na+, Al(OH)3 and H2O; and adding NaHS to the reaction mixture. The mobility of the metal contaminates is reduce by adsorption of the metal contaminates in the medium onto the surface of ferrous sulfide or Al(OH)3 in the ferrous sulfide suspension; adsorption of the metal contaminates in the medium onto iron (hydr)-oxides formed in the suspension; and precipitation of the metal contaminates.Type: ApplicationFiled: February 3, 2017Publication date: May 25, 2017Inventors: Gary J. Meyer, Thomas P. McCullough, Anthony J. Kriech, Ralph E. Roper
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Publication number: 20170056818Abstract: A liquid suspension comprised of ferrous sulfide particles and method of using the same for the removal of selenium from industrial gas. Said liquid suspension may be (1) directly injected, or (2) coated onto or into a substrate and then injected into an industrial gas containing selenium to remove said selenium from the industrial gas stream in a dry scrubber system. Said liquid suspension of ferrous sulfide particles may also be used to remove selenium contained in industrial gases in a wet scrubber system.Type: ApplicationFiled: August 26, 2016Publication date: March 2, 2017Inventors: Gary J. Meyer, Thomas P. McCullough, Anthony J. Kriech
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Patent number: 9409046Abstract: Methods for treatment a heavy metal-contaminated solid, semi-solid, liquid or gaseous matrix with magnesium oxide, magnesium sulfite, magnesium sulfate, magnesium chloride, magnesium hydroxide, and mixtures of any two or more of these. Methods for treatment of a solid or semi-solid waste containing unacceptable levels of leachable aluminum and reactive metallic aluminum-containing waste with magnesium oxide, magnesium sulfite, magnesium sulfate, magnesium hydroxide, magnesium chloride, and mixtures of any two or more of these.Type: GrantFiled: October 28, 2008Date of Patent: August 9, 2016Assignee: REMEDIUM SERVICES GROUP, LLCInventors: Thomas P. McCullough, Gary Joel Meyer
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Publication number: 20160107210Abstract: A method of reducing the mobility of metal contaminates in mediums such as soil, groundwater, sludge, etc. that involves contacting the mediums with a reagent that is a ferrous sulfide suspension that contains at least FeS and Al(OH)3. The reagent is produced by reacting a solution that contains at least NaAlO2 and NaOH with a solution that contains FeCl2, HCl and water to form a reaction mixture that contains Fe2+, Cl?, Na+, Al(OH)3 and H2O; and adding NaHS to the reaction mixture. The mobility of the metal contaminates is reduce by adsorption of the metal contaminates in the medium onto the surface of ferrous sulfide or Al(OH)3 in the ferrous sulfide suspension; adsorption of the metal contaminates in the medium onto iron (hydr)-oxides formed in the suspension; and precipitation of the metal contaminates.Type: ApplicationFiled: October 16, 2015Publication date: April 21, 2016Inventors: Gary J. Meyer, Thomas P. McCullough, Anthony J. Kriech, Ralph E. Roper, JR.
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Patent number: 9073008Abstract: A wet gas scrubber liquor and method of using the same to remove mercury from flue gases. The wet gas scrubber liquid is an alkaline liquid suspension of ferrous sulfide particles that can be prepared by combining together a ferrous ion source such as ferrous chloride, a sulfide ion source such as sodium hydrosulfide and an alkalinity source such as sodium hydroxide. When used to scrub flue gases to remove mercury from flue gases the mercury reacts with said alkaline liquid suspension of ferrous sulfide particles and can be removed by at least one of: i) adsorption onto said ferrous sulfide particles; ii) adsorption onto iron (hydr)-oxides that form in said alkaline liquid suspension of ferrous sulfide particles; and iii) absorption by reacting with sulfur formed in alkaline liquid suspension of ferrous sulfide particles and forming mercuric sulfide as a precipitate.Type: GrantFiled: March 7, 2014Date of Patent: July 7, 2015Assignee: Redox Technology Group, LLCInventors: Thomas P. McCullough, Gary Joel Meyer, Ralph E. Roper, Jr., Anthony J. Kriech
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Patent number: 9034285Abstract: A ferrous sulfide suspension that includes at least FeSm and Al(OH)3 and which can be used to reduce mercury emissions in flue gases. Through a combination of complex chemical reactions, precipitation, co-precipitation, and surface adsorption the ferrous sulfide suspension of the present invention effectively removes mercury from gaseous streams while concurrently preventing mercury re-emission.Type: GrantFiled: February 28, 2014Date of Patent: May 19, 2015Assignee: Redox Technology Group LLCInventors: Thomas P. McCullough, Gary Joel Meyer, Ralph E. Roper, Jr., Anthony J. Kriech
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Publication number: 20140255280Abstract: A wet gas scrubber liquor and method of using the same to remove mercury from flue gases. The wet gas scrubber liquid is an alkaline liquid suspension of ferrous sulfide particles that can be prepared by combining together a ferrous ion source such as ferrous chloride, a sulfide ion source such as sodium hydrosulfide and an alkalinity source such as sodium hydroxide. When used to scrub flue gases to remove mercury from flue gases the mercury reacts with said alkaline liquid suspension of ferrous sulfide particles and can be removed by at least one of: i) adsorption onto said ferrous sulfide particles; ii) adsorption onto iron (hydr)-oxides that form in said alkaline liquid suspension of ferrous sulfide particles; and iii) absorption by reacting with sulfur formed in alkaline liquid suspension of ferrous sulfide particles and forming mercuric sulfide as a precipitate.Type: ApplicationFiled: March 7, 2014Publication date: September 11, 2014Inventors: Thomas P. McCullough, Gary Joel Meyer, Ralph E. Roper, JR., Anthony J. Kriech
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Patent number: 8192705Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.Type: GrantFiled: December 10, 2009Date of Patent: June 5, 2012Assignee: Redox Solutions, LLCInventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
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Publication number: 20100286464Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.Type: ApplicationFiled: July 22, 2010Publication date: November 11, 2010Applicant: REDOX SOLUTIONS, LLCInventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
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Publication number: 20100145130Abstract: Treatment of heavy metal-containing waste products including selenium- and arsenic-containing waste products, from flue gas desulfurization (FGD) treatment systems utilizing alternative alkali materials such as soda ash (Na2CO3), nahcolite (NaHCO3), trona (Na2CO3/NaHCO3), sodium sulfite (Na2SO3), sodium hydroxide (NaOH), and the like in various combinations.Type: ApplicationFiled: December 8, 2009Publication date: June 10, 2010Inventor: Thomas P. McCullough
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Publication number: 20100087697Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer, contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.Type: ApplicationFiled: December 10, 2009Publication date: April 8, 2010Applicant: REDOX SOLUTIONS, LLCInventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
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Patent number: 7670576Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.Type: GrantFiled: September 7, 2005Date of Patent: March 2, 2010Assignee: Redox Solutions, LLCInventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
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Publication number: 20090118564Abstract: Methods for treatment a heavy metal-contaminated solid, semi-solid, liquid or gaseous matrix with magnesium oxide, magnesium sulfite, magnesium sulfate, magnesium chloride, magnesium hydroxide, and mixtures of any two or more of these. Methods for treatment of a solid or semi-solid waste containing unacceptable levels of leachable aluminum and reactive metallic aluminum-containing waste with magnesium oxide, magnesium sulfite, magnesium sulfate, magnesium hydroxide, magnesium chloride, and mixtures of any two or more of these.Type: ApplicationFiled: October 28, 2008Publication date: May 7, 2009Inventors: Thomas P. McCullough, Gary Joel Meyer