A Cambridge company will produce synthetic natural gas in China, using a process that captures nearly all the emissions.
1carbon-rich feedstocks (C)
Biomass - Nonfood plants such as sawgrass
Petroleum coke - Byproduct of oil refining
2Catalyst - Something that helps a chemical reaction, but is not itself changed
3Pressurized steam (H2O)
Steam mixes with the carbon and distributes the catalyst, creating a fluid in which C and H2O react and change to methane and carbon dioxide.
is primarily composed of methane (CH4).
useful byproducts are captured.
7Captured, sequestered or used for oil recovery
SOURCES: GreatPoint Energy; chemical dictionary; Union of Concerned Scientists
David Butler, Javier Zarracina and Monica Ulmanu/Globe Staff