21
Lawrence A Siwajek, W Jeffrey Cook, William R Brown: Landfill gas recovery. Acrion Technologies, Pearne Gordon McCoy & Granger, October 28, 1997: US05681360 (20 worldwide citation)

A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated in ...


22
Sircar Shivaji, Koch William R: Adsorptive separation of gas mixtures.. Air Prod & Chem, March 2, 1988: EP0257493-A1 (20 worldwide citation)

A process is described for separating gas mixtures containing a primary gaseous component and a secondary gaseous component by selective adsorption of the secondary gaseous component in an adsorptive process including the steps of adsorption in at least one adsorbent bed, rinsing said bed with secon ...


23
Stanley W Zison: Landfill gas production testing and extraction method. Pacific Energy, Christie Parker & Hale, November 5, 1991: US05063519 (19 worldwide citation)

A method for determining total landfill gas production capability and pollutant emission rates involves measuring gas pressure in a soil cover at various locations around the landfill. These measurements are preferably made successively and repeated. The tester determines an average gas pressure and ...


24
David J Palumbo: Method for processing landfill and other stranded gas containing commercial quantities of methane and contaminated by carbon dioxide, nitrogen and oxygen into a pipeline or vehicle quality natural gas product. Gibson Dunn & Crutcher, June 8, 2010: US07731779 (18 worldwide citation)

Stranded natural gas, when contaminated by difficult to remove constituents such as Nitrogen and Oxygen, has long been considered uneconomical to process into pipeline quality gas and is abandoned or utilized in other energy applications where economically viable. Landfill Gas (LFG) is often conside ...


25
Stanley W Zison: Method and apparatus for determining the venting rate of landfill gas. Getty Synthetic Fuels, Gordon L Peterson, April 24, 1984: US04444041 (17 worldwide citation)

A method of measuring the flow of landfill gas from a surface of a landfill comprising placing a receiver having an opening therein on the landfill surface so that the landfill gas can flow through the opening and enter the receiver, conducting the landfill gas from the receiver through a conduit, m ...


26
Douglas R Casella: System and method for treating landfill gas using landfill leachate. Casella Waste Systems, Wilmer Cutler Pickering Hale and Dorr, June 7, 2011: US07955419 (16 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 ...


27
Ronald L Brookshire, Donald Brookshire, Travis Brookshire, Seyed Mohammed Reza Kalantar Nejad, James Joseph Beach: Systems and methods for controlling gas flow from landfills. Landfill Gas & Environmental Products, John L Rogitz, January 2, 2001: US06169962 (15 worldwide citation)

An automated, computer-controlled landfill gas recovery system includes a number of equipment vaults, with each vault being associated with one or more wells in the landfill. The wells are in fluid communication with a piping system located in the associated vault, with the piping system including a ...


28
Bernard F Duesel Jr, David L Fenton, Michael J Rutsch: Gas induction bustle for use with a flare or exhaust stack. GEI Development, Marshall Gerstein & Borun, October 28, 2008: US07442035 (14 worldwide citation)

A bustle for use on a flare or an exhaust stack of, for example, a landfill gas treatment system, efficiently transfers gas from the stack to a waste heat recovery system associated with the landfill gas treatment system without substantially affecting the operation of the landfill gas treatment pro ...


29
Ewa A Bardasz, William K S Cleveland: Method of treating the products of combustion of landfill gas. The Lubrizol Corporation, James L Cordek, Frederick D Hunter, Joseph P Fischer, September 26, 1995: US05453210 (14 worldwide citation)

Disclosed is a method of extending lubricant life and engine life in a gas engine that utilizes landfill gas which comprises treating deleterious landfill gas components and combustion products of said landfill gas with a lubricant composition comprising a major amount of an oil of lubrication visco ...


30
John R Troost: Method and system for removing volatile organics from landfill gas. Southern Petroleum Laboratories, N Elton Dry, June 25, 1996: US05529612 (13 worldwide citation)

A method for removing volatile organics from 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.



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