Natural gas is a domestically produced, low carbon alternative to petroleum-based fuels. This fuel is composed primarily of methane and offers great environmental, economic, and energy security benefits.
Compressed natural gas (CNG) is produced by compressing natural gas to less than 1% of its volume at standard atmospheric pressure. To provide adequate driving range, CNG is stored onboard a vehicle in a compressed gaseous state within cylinders at a pressure of 3,000 to 3,600 pounds per square inch.
Liquefied natural gas, or LNG, is natural gas in its liquid form. LNG is produced by purifying natural gas and super-cooling it to -260°F in order to turn it into a liquid. During the process known as liquefaction, natural gas is cooled below its boiling point, removing most of the compounds found in the fuel. The remaining natural gas is primarily methane with small amounts of other hydrocarbons.
Like conventional natural gas, renewable natural gas (RNG) can be used as a transportation fuel in the form of compressed natural gas (CNG) or liquefied natural gas (LNG). What makes it unique? RNG is essentially biogas (the gaseous product of the decomposition of organic matter) that has been processed to purity standards.
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Natural Gas in Ohio
64 stations throughout the state
4,953 natural gas fleet vehicles
28,076,634 gallons of gasoline equivalent used
Source: Department of Energy, Clean Fuels Ohio 2018 Transportation Technology Deployment Report
Natural gas offers tremendous cost savings compared to petroleum fuels; around 30% - 70% reductions in fuel spending can be expected. Government incentives or financing may help offset higher initial costs for new vehicles or support converting existing vehicles to CNG and LNG. The utilization of this fuel source also supports Ohio’s economy because of Ohio’s growing production of fossil and renewable natural gas.
Natural gas is a healthier alternative to conventional petroleum-based fuels because it produces significantly fewer tailpipe emissions. This is because methane (natural gas) burns much cleaner by emitting fewer hydrocarbons, nitrogen oxides, carbon monoxide, and particulate matter. Utilizing natural gas can cut net greenhouse gas emissions by 25% when compared to gasoline or diesel vehicle exhaust. Reducing these emissions is vital in decreasing environmental problems such as global warming, smog, and acid rain.
Fleet efficiency is critical to a national convenient foods producer like Frito-Lay. The company and its parent PepsiCo, have committed to an aggressive plan to conserve fuel and reduce emissions of its delivery trucks and sales cars.
City of Dublin
The City of Dublin took advantage of a U.S. DOE grant to create public CNG infrastructure and convert fleet vehicles to CNG. As a result, the City of Dublin has been able to reduce fuel costs and emissions, while providing opportunity for the surrounding community to also take advantage of CNG.
Rumpke prides itself on promoting environmental consciousness, and has already taken advantage of landfill recovery by creating a renewable natural gas facility. Rumpke launched new compressed natural gas refuse trucks into its fleet, to continue reducing the organization's environmental impact and fuel costs.