Featured Research

from universities, journals, and other organizations

Could Ice-like Cages Be Used To Trap Carbon Dioxide Underground?

Date:
January 15, 2009
Source:
University of Calgary
Summary:
Ice-like "cages" of gas trapped underground may offer a safe and efficient way to reduce global warming. Researchers are investigating the potential for permanently storing carbon dioxide in geological reservoirs, by locking the global-warming gas within solid, cage-like structures called hydrates.

Mehran Pooladi-Darvish (left) and Jocelyn Grozic check the calibration on a series of high pressure syringe pumps used in their research on storing CO2 in hydrates.
Credit: Photo: Ken Bendiktsen

Ice-like “cages” of gas trapped underground may offer a safe and efficient way to reduce global warming.

Two U of C researchers are investigating the potential for permanently storing carbon dioxide in geological reservoirs, by locking the global-warming gas within solid, cage-like structures called hydrates.

“A main attraction of utilizing hydrates is CO2 storage, including in some depleted gas reservoirs near oilsands operations in northern Alberta,” says Mehran Pooladi-Darvish, professor of chemical and petroleum engineering in the Schulich School of Engineering.

“Once you get the CO2 into a reservoir that has the right conditions and it contacts the reservoir water and forms hydrates, it’s in a pretty stable form,” says Jocelyn Grozic, associate professor of civil engineering at Schulich.

The Alberta government has committed $2 billion to develop carbon capture and storage (CCS) projects, to reduce the industrial CO2 emissions that contribute to global warming and climate change.

CCS technology typically involves capturing emissions at, for example, a coal-fired power plant or an oilsands facility. The CO2 is then injected underground for storage in a depleted oil and gas reservoir or a saline aquifer, a large formation filled with salt water.

However, carbon dioxide stored this way can take centuries or eons to naturally dissolve into the aquifer water or turn into a solid mineral, Pooladi-Darvish notes.

All during this time, there is a potential risk that the CO2 could find its way through abandoned well bores or natural fractures and be released at the surface—creating safety or environmental risks.

“But by storing CO2 in hydrates, you’re essentially turning the gas into a solid,” thereby greatly reducing the risk of leakage, Pooladi-Darvish says.

And it should also be possible, because of the compact geometric structure of hydrates, to pack a lot more CO2 into this form of storage compared with conventional methods, Grozic says.

Pooladi-Darvish and Grozic’s three-year study, funded by the Natural Sciences and Engineering Research Council, is focused on understanding permeability, or the ability of fluids to flow through CO2-hydrate reservoirs. In her laboratory, Grozic is able to form hydrates within a small sand sample and then push CO2 gas through this miniature “reservoir,” enabling her to measure the permeability and stresses.

Pooladi-Darvish then takes the data from Grozic’s experimental physical model and creates computer simulations of large-scale reservoirs, in which he models larger flow rates and volumes, reservoir pore spaces and various injection and recovery well configurations and operating processes.


Story Source:

The above story is based on materials provided by University of Calgary. The original article was written by Mark Lowey. Note: Materials may be edited for content and length.


Cite This Page:

University of Calgary. "Could Ice-like Cages Be Used To Trap Carbon Dioxide Underground?." ScienceDaily. ScienceDaily, 15 January 2009. <www.sciencedaily.com/releases/2009/01/090114162235.htm>.
University of Calgary. (2009, January 15). Could Ice-like Cages Be Used To Trap Carbon Dioxide Underground?. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2009/01/090114162235.htm
University of Calgary. "Could Ice-like Cages Be Used To Trap Carbon Dioxide Underground?." ScienceDaily. www.sciencedaily.com/releases/2009/01/090114162235.htm (accessed October 21, 2014).

Share This



More Earth & Climate News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
Powered by NewsLook.com
White Rhino's Death In Kenya Means Just 6 Are Left

White Rhino's Death In Kenya Means Just 6 Are Left

Newsy (Oct. 20, 2014) Suni, a rare northern white rhino at Ol Pejeta Conservancy, died Friday. This, as many media have pointed out, leaves people fearing extinction. Video provided by Newsy
Powered by NewsLook.com
New Organic Fertilizer Helps Reforestation of Monarch Butterflies’ Winter Retreat

New Organic Fertilizer Helps Reforestation of Monarch Butterflies’ Winter Retreat

Reuters - Innovations Video Online (Oct. 20, 2014) Using an organic fertiliser, a conservationist from the National Autonomous University of Mexico (UNAM), leads an award-winning project to reforest the sanctuary of monarch butterflies. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins