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Carbon sequestration as a climate mitigation strategy: potential and risks

23 giugno 2009, Roma

Mercoledì 23 giugno presso la Sala Mimose del Centro Ricerche ENEA Casaccia si terrà il Seminario del Prof. Ning Zeng(Dept. of Atmospheric and Oceanic Science and Earth System Science Interdisciplinary Center - University of Maryland) sul tema "Carbon sequestration as a climate mitigation strategy: potential and risks".

Più nello specifico, il Prof. Ning Zeng illustra la Tematica del seminario:

“Because of the slow pace in moving towards a low-carbon economy, it is expected that a significant amount of carbon will have to be captured and sequestered in order to keep the atmospheric CO2 concentration below a dangerous level.

In this two-part talk, I will first introduce a variety of carbon sequestration techniques that are being experimented or proposed such as geological, oceanic and biological methods. Pros and cons of these methods will be discussed and compared.

I will then focus on a novel method called Wood Burial and Storage (WBS) in which the woody material in the world's forests are harvested sustainably and buried in underground trenches or stored away in above ground shelters.

Because a large flux of CO2 is constantly being assimilated into the world’s forests via photosynthesis, cutting off its return pathway to the atmosphere forms an effective carbon sink.

It was estimated that a sustainable long-term carbon sequestration potential for wood burial is 10 GtC/y, although only a part of it can be realized due to various practical limitations.

The cost for wood burial is lower than the typical cost for power plant CO2 capture with geological storage.

The technique is low tech, distributed, easy to monitor, safe, and reversible, thus an attractive option for large-scale implementation in a world-wide carbon market.”

 

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