Our focus is on electricity generation from landfill gas (LFG) and LFG management. LFG is one of the naturally occurring products of decomposing organic matter in landfill sites. LFG comprises approximately 60% methane which is one of a number of gases contributing to global warming. Methane is a highly potent greenhouse gas with a contribution to global warming which is over 20 times greater than that of carbon dioxide.
By extracting LFG from landfill sites, we fulfil an important role in helping waste management companies meet their environmental compliance obligations. As B9 uses the collected LFG to generate power, it not only abates the global warming impact of the methane emissions but also provides an efficient and secure source of power generation to local communities.
Landfill gas is about 40-60% methane, with the remainder being mostly carbon dioxide (CO2). Landfill gas also contains varying amounts of nitrogen, oxygen, water vapor, sulfur and a hundreds of other contaminants -- most of which are known as "non-methane organic compounds" or NMOCs. Inorganic contaminants like mercury are also known to be present in landfill gas. Sometimes, even radioactive contaminants such as tritium (radioactive hydrogen) have been found in landfill gas.
NMOCs usually make up less than 1% of landfill gas. EPA identifies 94 NMOCs in their 1991 report, "Air Emissions from Municipal Solid Waste Landfills - Background Information for Proposed Standards and Guidelines." Many of these are toxic chemicals like benzene, toluene, chloroform, vinyl chloride, carbon tetrachloride, and 1,1,1 trichloroethane. At least 41 of these are halogenated compounds. Many others are non-halogenated toxic chemicals. 2, 3 More exhaustive test for contaminants in landfill gas have found hundreds of different NMOC contaminants.