51
Don Churchill Augenstein, John Rudiger Benemann, Ramin Yazdani: Landfill design and method for improved landfill gas capture. Institute for Environmental Management, Hugh McTavish, April 3, 2007: US07198433 (5 worldwide citation)

The invention provides an improved method of collecting biogas from a landfill that results in more complete collection of biogas produced in the landfill, and with less contamination with air. The method involves providing the landfill with an upper gas containment layer near the surface of the lan ...


52
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 ...


53
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 (5 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 ...


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Bernard F Duesel Jr, David L Fenton, Michael J Rutsch: Waste heat recovery system. Heartland Technology Partners, Marshall Gerstein & Borun, June 11, 2013: US08459984 (4 worldwide citation)

A waste heat recovery system is coupled to a flare or exhaust stack of, for example, a landfill gas treatment system, to recover at least a portion of the energy within the exhaust produced by the gas treatment system and provides the recovered energy either indirectly or directly to a secondary pro ...


56
Cary V Sorensen, Jeffrey R Bailey: Landfill gas purification method and system. Manufactured Methane Corporation, Luedeka Neely Group P C, July 9, 2013: US08480789 (4 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 ...


57
David A Fischer, David Mioduszewski: Devices and methods for landfill gas well monitoring and control. Graco Minnesota, Harness Dickey & Pierce, June 23, 2015: US09062536 (4 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, ...


58
David Vonasek: Method and apparatus for disposal of landfill gas condensate. Emcon, Paul L Griffiths, January 16, 1996: US05484279 (4 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 ...


59
Douglas R Casella: Systems and methods for treating landfill gas using landfill leachate. Casella Waste Systems, Wilmer Cutler Pickering Hale and Dorr, October 16, 2012: US08287625 (4 worldwide citation)

Embodiments of the present invention are directed to systems and methods for treating landfill gas using landfill leachate. In one embodiment of the present invention, a method includes receiving landfill leachate from at least one of a plurality of sources, and pretreating the landfill leachate to ...


60
Charles D Elkins: Portable gas monitor. Elkins Earthworks, Fay Sharpe, Brian E Turung, April 24, 2012: US08163242 (4 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 ...



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