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Cunping Huang, Nazim Muradov, Ali T Raissi: Method for zero emission liquid hydrogen production from methane and landfill gas. Research Foundation of the University of Central Florida, Brian S Steinberger, Phyllis K Wood, Law Offices of Brian S Steinberger P A, February 19, 2008: US07332146 (7 worldwide citation)

Processes, methods, systems and devices for zero emission liquid hydrogen production directly from a variety of methane sources, such as natural gas and landfill gas, are disclosed. Five embodiments of plant designs for liquid hydrogen production are presented. The embodiments combine hydrogen produ ...


52
David A Fischer, David Mioduszewski: Devices and methods for landfill gas well monitoring and control. Graco Minnesota, Harness Dickey & Pierce, June 23, 2015: US09062536 (6 worldwide citation)

A landfill well control system includes a mobile hand-held device provided with a software monitoring application including a table having data related to determination of a desired methane gas output flow rate. A landfill gas (LFG) wellhead gas control valve includes: an electronically controlled, ...


53
Robert K Ham: Anaerobic sampling method. Getty Synthetic Fuels, Gordon L Peterson, July 7, 1981: US04276778 (6 worldwide citation)

A method of obtaining a substantially anaerobic sample from a landfill comprising providing a bore hole which opens at the surface of the landfill, substantially sealing off atmospheric air from a zone which includes at least a region of the bore hole to define an essentially anaerobic zone. Refuse ...


54
Cary V Sorensen, Jeffrey R Bailey: Landfill gas purification method and system. Manufactured Methane Corporation, Luedeka Neely Group P C, July 9, 2013: US08480789 (5 worldwide citation)

The present disclosure provides a method for separating and purifying a landfill gas stream. In one embodiment, the method includes a step of collecting a crude landfill gas stream which includes at least methane, carbon dioxide, oxygen, and nitrogen gases. The method also includes a step of separat ...


55
David Vonasek: Method and apparatus for disposal of landfill gas condensate. Emcon, Paul L Griffiths, January 16, 1996: US05484279 (5 worldwide citation)

A method and apparatus for the on-site disposal of landfill gas (LFG) condensate is disclosed. Any contaminants in the condensate are incinerated in an LFG flare. The LFG condensate is first pressurized and then injected, in an atomized state, into a combustion zone of the LFG flare. The LFG condens ...


56
Floyd E Farha: Sulfur removal using ferrous carbonate absorbent. New Technology Ventures, Locke Lord Bissell & Liddell, June 29, 2010: US07744841 (5 worldwide citation)

Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followed by drying, are used to treat and ...


57
Charles D Elkins: Portable gas monitor. Elkins Earthworks, Fay Sharpe, Brian E Turung, April 24, 2012: US08163242 (5 worldwide citation)

A portable monitor used to measure landfill gas and landfill well parameters. The portable monitor includes a control unit and a measuring unit that can communication wirelessly with one another. The control unit and/or measuring unit can includes a heating arrangement to increase the temperature of ...


58
John R Troost: Method and apparatus for analyzing gases containing volatile organic compounds by use of tetraglyme. Southern Petroleum Laboratories, N Elton Dry, July 22, 1997: US05650560 (5 worldwide citation)

A method and apparatus for sampling and analyzing gas. In particular landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of liquid tetraglyme to cause the volatile organic components to be absorbed in the tetraglyme. The tetraglyme ...


59
John Troost, George Prokuda, James A Petersen: Method for sampling and analyzing landfill gas. Dresser, Andrus Sceales Starke & Sawall, March 18, 1997: US05611844 (5 worldwide citation)

A method for sampling and analyzing landfill gas, in which the landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of liquid tetraglyme to cause the volatile organic components to be absorbed in the tetraglyme. The tetraglyme conta ...


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