Karst Carbon
Sequestration
Reporter: Xueli Chen,
Zichen Lee,
Shing Chi Ian Wang
SHENZHEN MIDDLE SCHOOL
Solutions——
1 Improving terminal efficiency ；
2 Improving supplier efficiency；
3 Renewable energy；
4 Alternative fuels ；
5 Agriculture（CH4 and N2O reduction
project）；
6 Industrial reduction process；
7 CCS
——《United Nations Framework Convention on Climate Change 》
Carbon Capture and Sequestration
（CCS）——
technology attempting to prevent the release
of large quantities of CO2 into the atmosphere
from fossil fuel use in power generation and
other industries by capturing CO2, transporting it
and ultimately, pumping it into underground
geologic formations to securely store it away
from the atmosphere.
——Wikipedia
1.Ocean Sequestration
2.Plantation Sequestration
3.Karst Carbon Sequestration
Why we choose this topic?
1.China is a big country with
vast Karst
2.Nearly 15% of the land on
Earth is covered by Karst.
It has a simple principle——
What is it?
And why do we call it “Karst”?——
Karst topography is a geological formation
shaped by the dissolution of a layer or layers of
soluble bedrock, usually carbonate rock such
as limestone or dolomite.
Influencing factors:
Climate
Hydrogeology
Geological Conditions
Landuse
Vegetation
For a long time, it was generally accepted
that the geological carbon sink rate was
very small, thus its effect was not
considered seriously in the global carbon
cycle study.
However, According to statistics, Karst
carbon sequestration could absorb over
600 million tons of carbon dioxide per year
which takes over 33% percent of the
world’s carbon dioxide
Problems
1. The stability of carbonate rock
Estimation of carbon sink flux by karstification
Lithology
• Dolomite
• Dolomitic limestone
• Impure dolomite
• Limestone
Specific corrodibility (%)
0.505
0.833
0.767
0.965
Limestone
Dolomite
2.Speed( carbon capacity)
Carbonic Anhydrase
Limestone ——10times
Dolomite ——3times
Origin?
expensive
Thank you for your listening!
Any question?