Hoping to speed up the viability of carbon capture and sequestration, the U.S. Dept. of Energy on Sept. 7 awarded more than $575 million in American Recovery and Reinvestment Act funds to 22 different CCS research projects. The DOE gave funds in four areas: three projects will receive $312 million for large-scale testing of advanced gasification technologies; four projects will get $123 million to research advanced turbo-machinery to lower emissions from industrial sources; five projects will share $90 million to research how to increase the efficiency and cut costs of post-combustion carbon capture; and 10 projects that already have received
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.