LandFill Methane Enhancement Process

LandFill Methane Enhancement Process
Inventors: Russell Chianelli, Xiomara Kretschmer
Patent No. 8,956,854

This patent uses landfill exhaust gases to further heat the landfill and to add moisture to the landfill. In addition, the landfill exhaust can be routed to a separate tank to cultivate algae as a biofuel feedstock.

A zero-discharge landfill process is disclosed herein. The process described in the present invention recycles the exhaust gases from a combustion engine which reheats the landfill and provides moisture. Additionally, the CO2 from the exhaust gases releases additional methane. Methane production in landfills can thus be enhanced by the method of the present invention. Furthermore, a portion of the exhaust gas can be used to cultivate algae in a cultivation tank. The cultivation of the algal species is enhanced in the presence of water, CO2, CO, and the elevated temperatures. Optionally, a first portion of the cultivated algae can be passed through the landfill to increase methane production in the landfill and a second portion of the cultivated algae can be transferred to a biodiesel production tank, for the conversion of the one or more algal oils and lipids to a biodiesel or a biofuel by a transesterification reaction

Issue Date: 02/17/2015
Application Date: 03/03/2011
Post Date: 03/02/2018

UTEP Docket No: 2008-008