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gerl@[EMAIL PROTECTED]
wrote:
>http://us.rd.yahoo.com/dailynews/rss/search/fractals/SIG=1214j6u5i/*http%3A//www.sciencedaily.com/releases/2007/02/070207171554.htm
>
>A new analysis led by an MIT scientist describes a mechanism for
capturing carbon dioxide emissions from a power plant and injecting the
gas into the ground, where it would be trapped naturally as tiny bubbles
and safely stored in briny porous rock.
>
>===
>NAKED ANGEL ART: http://www.rcip.com/nerdgerl
>
>
>
>
A number of people have suggested deep zone ocean injection.
The trouble with this deep rock idea is two fold:
1) earthquakes
2) volcanos
Volcanos are the result of heated trapped gases in just this sort of
geological zone.
The advantage of deep zone injection is that the gas is disolved in the
water
before it reaches the surface and most in an ocean layer that doesn't
circulate
well with the top layer of the ocean so it doesn't interfere with
natural co2 absorption.
Here is a recent news article on this kind of method:
http://www.lse.co.uk/ShowStory.asp?story=WU633793O&news_headline=plan_to_store_frozen_co2_beneath_seas
>
> Plan To Store Frozen CO2 Beneath Seas
>
> Wednesday, 7th February 2007, 07:07
> ------------------------------------------------------------------------
> Scientists are planning to beat global warming by storing greenhouse
> gases underground in huge cases of ice.
>
> Researchers at Leicester University say CO2 can be hidden below the
> ocean in reservoirs where it can stay harmlessly for many thousands of
> years.
>
> Geologist Ameena Camp says storing CO2 in a solid form as a gas
> "hydrate" - or as a pool of liquid CO 2 below a cap of hydrate
> cemented sediments - offers an alternative method to the current
> practices of keeping it in warm, deep sediments in the North Sea.
>
> She said: "Hydrates - also known as clathrates - are ice-like
> crystalline minerals that look like normal ice and form when gas and
> water freeze together at low temperature and high pressure.
>
> "They are made of a cage of frozen water molecules with the gas
> molecules trapped inside."
>
> Gas hydrates were first discovered two centuries ago but the possible
> use of carbon dioxide hydrate as a means to help resolve problems of
> global climate change have only recently been suggested.
>
> Lab experiments by Ms Camp whose findings are published in Planet
> Earth suggest carbon dioxide hydrate should form stable structures in
> sediments beneath oceans.
>
> By employing geophysical techniques and computer modelling she has
> identified a number of sites in Western Europe with the potential to
> store carbon dioxide by this method.
>
> Professor Mike Lovell, of the department of geology at Leicester
> University, said: "Ms Camps' work is at the forefront of gas hydrate
> research and has produced some very exciting results - highlighting
> the importance of investment in further studies of hydrates.
>
> "Investigations of natural methane hydrates will help our
> understanding of their role as a natural hazard - while carbon dioxide
> hydrates are a potential sink for greenhouse gas emissions.
>
> "This work also has application in other fields such as space research
> into hydrates on other planetary bodies."
>
> Underground storage of CO2 has taken place for many years as a
> consequence of injecting CO 2 into oil fields to enhance recovery.
>
> CO2 is being deliberately stored in a salt water reservoir under the
> North Sea for climate change reasons. Sleipner is located in the North
> Sea where Norway's Statoil strips carbon dioxide from natural gas with
> amine solvents and disposes of this carbon dioxide in a saline
formation.
>
> CO2 storage as a liquid and hydrate is a more novel method of
> geologically sequestering CO2 extracted from flue gases.
>
> CO2 would be injected into depleted reservoirs or aquifers using
> similar infrastructure used in the North Sea Sleipner gas field.
>
> But injection would take place into sub-seabed sediments below deep
> waters at colder temperatures where carbon dioxide is in its liquid
phase.
>
> Storage as a liquid and hydrate would allow greater volumes of gas to
> be trapped within these deep water reservoirs and could remain trapped
> for thousands of years.
>
> Said Ms Camp: "As greenhouse gas emissions continue to rise and global
> warming begins to take effect it is clear it will be difficult to meet
> Kyoto targets and to make the much larger cuts in carbon dioxide
> emissions many scientists now believe are needed to avoid dangerous
> climate change.
>
> "With the additional use of geophysical techniques and computer
> modelling a vast amount of knowledge is at our
> fingertips.
>
> "Using a computer program developed to predict carbon dioxide hydrate
> thickness I have identified many regions off Western Europe with
> pressures and temperatures suitable for carbon dioxide hydrate
formation.
>
> "These areas have the potential to store large volumes of carbon
> dioxide if this storage technology was to be developed further."
>
> Copyright © 2006 National News +44(0)207 684 3000
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<a class="moz-txt-link-abbreviated"
href="mailto:gerl@[EMAIL PROTECTED]
">gerl@[EMAIL PROTECTED]
> wrote:
<blockquote cite="mid127513712877541.Post@[EMAIL PROTECTED]
" type="cite">
<pre wrap=""><a class="moz-txt-link-freetext"
href="http://us.rd.yahoo.com/dailynews/rss/search/fractals/SIG=1214j6u5i/*http%3A//www.sciencedaily.com/releases/2007/02/070207171554.htm">http://us.rd.yahoo.com/dailynews/rss/search/fractals/SIG=1214j6u5i/*http%3A//www.sciencedaily.com/releases/2007/02/070207171554.htm</a>
A new analysis led by an MIT scientist describes a mechanism for capturing
carbon dioxide emissions from a power plant and injecting the gas into the
ground, where it would be trapped naturally as tiny bubbles and safely
stored in briny porous rock.
===
NAKED ANGEL ART: <a class="moz-txt-link-freetext"
href="http://www.rcip.com/nerdgerl">http://www.rcip.com/nerdgerl</a>
</pre>
</blockquote>
A number of people have suggested deep zone ocean injection.<br>
The trouble with this deep rock idea is two fold:<br>
1) earthquakes<br>
2) volcanos<br>
<br>
Volcanos are the result of heated trapped gases in just this sort of
geological zone.<br>
<br>
The advantage of deep zone injection is that the gas is disolved in the
water<br>
before it reaches the surface and most in an ocean layer that doesn't
circulate<br>
well with the top layer of the ocean so it doesn't interfere with
natural co2 absorption.<br>
<br>
Here is a recent news article on this kind of method:<br>
<a class="moz-txt-link-freetext"
href="http://www.lse.co.uk/ShowStory.asp?story=WU633793O&news_headline=plan_to_store_frozen_co2_beneath_seas">http://www.lse.co.uk/ShowStory.asp?story=WU633793O&news_headline=plan_to_store_frozen_co2_beneath_seas</a><br>
<blockquote type="cite"><br>
<h3 class="NewsBlue">Plan To Store Frozen CO2 Beneath Seas</h3>
<span class="NewsDate">Wednesday, 7th February 2007, 07:07</span><br>
<hr align="left" color="#000000" size="1"><span
class="NewsBody">Scientists
are planning to beat global warming by storing greenhouse gases
underground in huge cases of ice.<br>
<br>
Researchers
at Leicester University say CO2 can be hidden below the ocean in
reservoirs where it can stay harmlessly for many thousands of years.<br>
<br>
Geologist
Ameena Camp says storing CO2 in a solid form as a gas "hydrate" - or as
a pool of liquid CO 2 below a cap of hydrate cemented sediments -
offers an alternative method to the current practices of keeping it in
warm, deep sediments in the North Sea. <br>
<br>
She said: "Hydrates -
also known as clathrates - are ice-like crystalline minerals that look
like normal ice and form when gas and water freeze together at low
temperature and high pressure.<br>
<br>
"They are made of a cage of frozen water molecules with the gas
molecules trapped inside."<br>
<br>
Gas
hydrates were first discovered two centuries ago but the possible use
of carbon dioxide hydrate as a means to help resolve problems of global
climate change have only recently been suggested. <br>
<br>
Lab
experiments by Ms Camp whose findings are published in Planet Earth
suggest carbon dioxide hydrate should form stable structures in
sediments beneath oceans.<br>
<br>
By employing geophysical techniques
and computer modelling she has identified a number of sites in Western
Europe with the potential to store carbon dioxide by this method.<br>
<br>
Professor
Mike Lovell, of the department of geology at Leicester University,
said: "Ms Camps' work is at the forefront of gas hydrate research and
has produced some very exciting results - highlighting the importance
of investment in further studies of hydrates. <br>
<br>
"Investigations
of natural methane hydrates will help our understanding of their role
as a natural hazard - while carbon dioxide hydrates are a potential
sink for greenhouse gas emissions.<br>
<br>
"This work also has application in other fields such as space research
into hydrates on other planetary bodies.” <br>
<br>
Underground
storage of CO2 has taken place for many years as a consequence of
injecting CO 2 into oil fields to enhance recovery.<br>
<br>
CO2 is being
deliberately stored in a salt water reservoir under the North Sea for
climate change reasons. Sleipner is located in the North Sea where
Norway's Statoil strips carbon dioxide from natural gas with amine
solvents and disposes of this carbon dioxide in a saline formation.<br>
<br>
CO2 storage as a liquid and hydrate is a more novel method of
geologically sequestering CO2 extracted from flue gases.<br>
<br>
CO2
would be injected into depleted reservoirs or aquifers using similar
infrastructure used in the North Sea Sleipner gas field.<br>
<br>
But
injection would take place into sub-seabed sediments below deep waters
at colder temperatures where carbon dioxide is in its liquid phase.<br>
<br>
Storage
as a liquid and hydrate would allow greater volumes of gas to be
trapped within these deep water reservoirs and could remain trapped for
thousands of years. <br>
<br>
Said Ms Camp: "As greenhouse gas emissions
continue to rise and global warming begins to take effect it is clear
it will be difficult to meet Kyoto targets and to make the much larger
cuts in carbon dioxide emissions many scientists now believe are needed
to avoid dangerous climate change.<br>
<br>
"With the additional use of geophysical techniques and computer
modelling a vast amount of knowledge is at our<br>
fingertips.<br>
<br>
"Using
a computer program developed to predict carbon dioxide hydrate
thickness I have identified many regions off Western Europe with
pressures and temperatures suitable for carbon dioxide hydrate
formation.<br>
<br>
"These areas have the potential to store large
volumes of carbon dioxide if this storage technology was to be
developed further."<br>
</span><br>
<span class="NewsCopyright">Copyright © 2006 National News
+44(0)207
684 3000</span></blockquote>
<br>
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