Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

Carbon capture experiment 'turns waste CO2 to stone'

RATE THIS! +33
Posted in Science on 10th Jun, 2016 07:56 PM by AlexMuller

Scientists think they have found a smart way to constrain carbon emissions; turn them to stone. Researchers report an experiment in Iceland where they have pumped CO2 and water underground into volcanic rock. Reactions with the minerals in the deep basalts convert the carbon dioxide to immobile chalky solid.

 

Even more encouraging, the team writes in Science magazine, is the speed at which this process occurs: on the order of months. "Of our 220 tonnes of injected CO2, 95% was converted to limestone in less than two years," said lead author Juerg Matter from Southampton University, UK.
 
"It was a huge surprise to all the scientists involved in the project, and we thought, 'Wow! This is really fast'," he recalled on the BBC's Science In Action programme.
 
With carbon dioxide concentrations in the atmosphere marching ever upwards and warming the planet, researchers are keen to investigate so called "carbon capture and storage" (CCS) solutions.
 
The Carbfix project on Iceland, on the other hand, seeks to solidify the unwanted carbon in place. Working with the Hellisheidi geothermal power plant outside Reykjavik, it combined the waste CO2 with water to make a slightly acidic liquid that was then sent hundreds of metres down into the volcanic basalts that make up so much of the North Atlantic island.
 
The low pH water (3.2) worked to dissolve the calcium and magnesium ions in the basalts, which then reacted with the carbon dioxide to make calcium and magnesium carbonates. Cores drilled into the experimental site pulled up rock with the tell-tale white carbonates occupying the pore spaces.
 
The Hellisheidi geothermal power station has now moved beyond the experiment reported in Science magazine and is routinely injecting CO2 into the subsurface in larger quantities. The company is also burying hydrogen sulphide - another byproduct from the plant. This benefits the locals who have had to suffer the occasional waft of rotten eggs coming over their properties.

Tags: rockcarboncarbon dioxideclimate changeenergychemistry

Read original article » Back to category

Comments

Author: Guest
Posted: 2016-06-11
+1
Amazing progress! This capture of CO2 works very fast and potentially can achieve great capacity to reduce CO2 effects on global warming
1 Replies
Author: Guest
Posted: 2016-06-11
+0
Yes, this is important. Reducing CO2 levels just by reducing emission is a difficult task and the ways to remove it and capture it are going to be needed to achieve overall reduction Reply
Reply


 

Recent headlines

  • Posted in Business on 2017-03-27 19:48:26
    Tech world debate on robots and jobs heats up..read more
    Posted in Science on 2017-03-27 19:37:58
    Chemical energy storage with water heating solar panels.....read more
    Posted in Science on 2017-03-27 19:31:49
    Blood test detects cancer and pinpoints location before.....read more
    Posted in Business on 2017-03-26 19:56:28
    The U.S. will be hit worse by job automation than other.....read more
    Posted in Business on 2017-03-26 19:49:51
    Elon Musk says Tesla will start taking orders for Solar.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me