Featured Research

from universities, journals, and other organizations

Measuring changes in rock: Research looks at effect of captured and stored carbon dioxide on minerals

Date:
October 20, 2010
Source:
American Institute of Physics
Summary:
Researchers have developed a way to study the effects of super-critical carbon dioxide on minerals commonly found in potential underground storage sites, helping to evaluate one strategy for minimizing the impacts of greenhouse gases on global warming.

The capture and storage of carbon dioxide in deep geologic formations, a strategy for minimizing the impacts of greenhouse gases on global warming, may currently be technologically feasible. But one key question that must be answered is the ability of subsurface materials to maintain their integrity in the presence of supercritical carbon dioxide -- a fluid state in which the gas is condensed at high temperature and pressure into a liquid.

A research team at the Pacific Northwest National Laboratory has developed tools in EMSL, a national user facility at PNNL, to study the effects of supercritical CO2 on minerals commonly found in potential storage sites. They are presenting their results at the AVS 57th International Symposium & Exhibition, which takes place this week at the Albuquerque Convention Center in New Mexico.

"The mechanisms of surface interactions with carbon dioxide under these conditions are unknown," says Scott Lea of PNNL. "We need to know if the carbon dioxide can dry out the clay minerals, creating cracks or have other interactions that could create pores in the rock."

Because carbon dioxide will be stored at pressures many times greater than atmospheric pressure, the integrity of the rock must be assured.

The same temperature and pressure conditions create a challenge for researchers trying to observe changes in rock samples as they occur. The PNNL group will present a high pressure atomic force microscope (AFM) head that can integrate with existing commercial systems. The new AFM is designed to handle pressures up to 1500 psi. The presentation will show that the AFM head is capable of operating at temperatures and pressures required to maintain carbon dioxide in a supercritical state and that the noise levels are low enough to observe the atomic scale topographic changes due to chemical reactions that may occur between mineral substances and supercritical CO2.


Story Source:

The above story is based on materials provided by American Institute of Physics. Note: Materials may be edited for content and length.


Cite This Page:

American Institute of Physics. "Measuring changes in rock: Research looks at effect of captured and stored carbon dioxide on minerals." ScienceDaily. ScienceDaily, 20 October 2010. <www.sciencedaily.com/releases/2010/10/101020111214.htm>.
American Institute of Physics. (2010, October 20). Measuring changes in rock: Research looks at effect of captured and stored carbon dioxide on minerals. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2010/10/101020111214.htm
American Institute of Physics. "Measuring changes in rock: Research looks at effect of captured and stored carbon dioxide on minerals." ScienceDaily. www.sciencedaily.com/releases/2010/10/101020111214.htm (accessed April 23, 2014).

Share This



More Earth & Climate News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

California Drought Is Good News for Gold Prospectors

California Drought Is Good News for Gold Prospectors

AFP (Apr. 22, 2014) — For months California has suffered from a historic drought. The lack of water is worrying for farmers and ranchers, but for gold diggers it’s a stroke of good fortune. With water levels low, normally inaccessible areas are exposed. Duration: 01:57 Video provided by AFP
Powered by NewsLook.com
Raw: MN Lakes Still Frozen Before Fishing Opener

Raw: MN Lakes Still Frozen Before Fishing Opener

AP (Apr. 22, 2014) — With only three weeks until Minnesota's fishing opener, many are wondering if the ice will be gone. Some of the Northland lakes are still covered by up to three feet of ice, causing concern that just like last year, the lakes won't be ready. (April 22) Video provided by AP
Powered by NewsLook.com
Is North Korea Planning Nuclear Test #4?

Is North Korea Planning Nuclear Test #4?

Newsy (Apr. 22, 2014) — South Korean officials say North Korea is preparing to conduct another nuclear test, but is Pyongyang just bluffing this time? Video provided by Newsy
Powered by NewsLook.com
Nasa Gives You An Excuse to Post a Selfie on Earth Day

Nasa Gives You An Excuse to Post a Selfie on Earth Day

TheStreet (Apr. 22, 2014) — NASA is inviting all social media users to take a selfie of themselves alongside nature and to post it to Twitter, Facebook, Flickr, Instagram, or Google Plus with the hashtag #globalselfie. NASA's goal is to crowd-source a collection of snapshots of the earth, ground-up, that will be used to create one "unique mosaic of the Blue Marble." This image will be available to all in May. Since this is probably one of the few times posting a selfie to Twitter won't be embarrassing, we suggest you give it a go for a good cause. Video provided by TheStreet
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:
from the past week

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