Energy, Materials and the carbon budget Flashcards
1 kg carbon (c) =
3.667 kg carbon dioxide (CO2)
GtC
Gigatonne carbon
Two main sources for emission
- Fossil Fuels
- Cement production
Fossil emission is
direct emissions that come from burning fossil fuels.
You get CO2 and H2O as end products
Cement emissions come
from the making of clinker. It is therefore a process emission.
CaCO3 -> CO2 + CaO
Since the total emissions have been increasing
we can state that the attention to climate change is totally disconnected from actual emissions (increase).
(There has not been extra attention now that our emissions are much higher than before.)
Third source of emissions
Land use change
Emissions from land use change
are real emissions and not the changing of the sinks
Main emissions from land use change
come from deforestation
Slash and burn?
The 4 largest sources of emissions
1) Coal
2) Oil
3) Gas
4) Cement
How large is the share of coal emissions in 2012
43%
Which energy wasting method is the source of 1% of all emissions
Flaring
Cement only has a … share in 2012 global emissions
5%
The biggest source of emission growth between 2011 and 2012
is coal, with 54%
The largest increase in the use of coal is in
China and India
There was a decrease in the US
The top 4 emitters in 2012 covered … of global emissions
58%