Synthetic Natural Gas and Synfuels By: Riley Sunday, Caroline Miller, Alison Mundell, Taylor Kovats

Definition & Description Gaseous fuel containing mostly methane Produced from solid coal by the process of coal gasification, which removes impurities Synfuels produce less air pollution than coal when they’re burned, but burning these requires more mining and using more coal than if coal is directly burned.

Net Energy Outcome -low to moderate energy yield -net energy outcome is calculated by estimating total amount of energy available from resource over its lifetime and subtracting estimated amount of energy used in finding, extracting, processing, and transporting useful energy to consumers

Advantages & Disadvanages large potential supply in many countries vehicle fuel lower air pollution than coal Disadvantages low- moderate net energy yield higher CO2 emissions than coal requires 50% more mining: land disturbance, water use and pollution

Negative Environmental Affects

Availability of Synthetic Natural Gas -The United States has a lot of cheap abundant gas -In order to keep up with the growing population and bigger transportation, they will need a substitute which is the Synthetic Natural Gas

Depletion Time The amount of time it takes to use a certain fraction (usually 80%) of a nonrenewable resource at an assumed rate of use. Findin 20% usually costs more than its worth Synthetic gas is a new technology and the estimated depletion time is still under research

Extra Terms coal gasification: removes sulfur and other impurities from coal coal liquefaction: coal is converted into liquid fuels such as methanol and synthetic gasoline through this process Great Britain and Australia are evaluating burning coal seams underground, trap the gases, burn the CH4 and trap CO2 underground.

References Text Book http://www.google.com/imgres?imgurl=http://cdn2.hubspot.net/hub/60864/file-15004575-jpg/gallery/album/2729/sng2.jpg%253Ft%253D1425394816920&imgrefurl=http://www.transtechenergy.com/propane-air-systems&h=750&w=1000&tbnid=_CMwL34GYx7QFM:&zoom=1&docid=-dhvVqMOMt4GXM&ei=4QQDVeeeLs_4yQT414HgDQ&tbm=isch&ved=0CHQQMyhNME0 http://www.google.com/imgres?imgurl=http://www.bctenergy.com/Methanization_files/DSC01694.jpg&imgrefurl=http://www.bctenergy.com/methanization.html&h=400&w=700&tbnid=Jivvv_MXzvn1eM:&zoom=1&docid=p1gHwqsZq1Wh1M&ei=4QQDVeeeLs_4yQT414HgDQ&tbm=isch&ved=0CIIBEDMoWzBb