Navigation Links
A dash of lime -- a new twist that may cut CO2 levels back to pre-industrial levels
Date:7/20/2008

Scientists say they have found a workable way of reducing CO2 levels in the atmosphere by adding lime to seawater. And they think it has the potential to dramatically reverse CO2 accumulation in the atmosphere, reports Cath O'Driscoll in SCI's Chemistry & Industry magazine published today.

Shell is so impressed with the new approach that it is funding an investigation into its economic feasibility. 'We think it's a promising idea,' says Shell's Gilles Bertherin, a coordinator on the project. 'There are potentially huge environmental benefits from addressing climate change and adding calcium hydroxide to seawater will also mitigate the effects of ocean acidification, so it should have a positive impact on the marine environment.'

Adding lime to seawater increases alkalinity, boosting seawater's ability to absorb CO2 from air and reducing the tendency to release it back again.

However, the idea, which has been bandied about for years, was thought unworkable because of the expense of obtaining lime from limestone and the amount of CO2 released in the process.

Tim Kruger, a management consultant at London firm Corven is the brains behind the plan to resurrect the lime process. He argues that it could be made workable by locating it in regions that have a combination of low-cost 'stranded' energy considered too remote to be economically viable to exploit like flared natural gas or solar energy in deserts and that are rich in limestone, making it feasible for calcination to take place on site.

Kruger says: 'There are many such places for example, Australia's Nullarbor Plain would be a prime location for this process, as it has 10 000km3 of limestone and soaks up roughly 20MJ/m2 of solar irradiation every day.'

The process of making lime generates CO2, but adding the lime to seawater absorbs almost twice as much CO2. The overall process is therefore 'carbon negative'.

'This process has the potential to reverse the accumulation of CO2 in the atmosphere. It would be possible to reduce CO2 to pre-industrial levels,' Kruger says.

And Professor Klaus Lackner, a researcher in the field from Columbia University, says: 'The theoretical CO2 balance is roughly rightit is certainly worth thinking through carefully.'

The oceans are already the world's largest carbon sink, absorbing 2bn tonnes of carbon every year. Increasing absorption ability by just a few percent could dramatically increase CO2 uptake from the atmosphere.


'/>"/>

Contact: Meral Nugent
meral.nugent@soci.org
020-759-81533
Society of Chemical Industry
Source:Eurekalert

Related biology news :

1. MIT reports new twist in microRNA biology
2. Intellifit(R) Offers Custom-Made Jeans with a High-Tech Twist
3. New twist on lifes power source
4. New fossil tells twisted tale of how flatfishes ended up with two eyes on one side of head
5. Low levels of key protein may indicate pancreatic cancer risk
6. Gray whales a fraction of historic levels, genetic research says
7. Folic acid lowers blood arsenic levels, according to Mailman School of Public Health study
8. Study finds that even aloof husbands have lower testosterone levels than unmarried men
9. Folic acid lowers blood arsenic levels in Bangladesh
10. Wildfire drives carbon levels in northern forests
11. Even minute levels of lead cause brain damage in children
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/2/2017)... 2, 2017 Who risk to be deprived ... the full report: https://www.reportbuyer.com/product/4313699/ WILL APPLE ... FIELD? Fingerprint sensors using capacitive technology represent a ... vendor Idex forecasts an increase of 360% of the ... of the fingerprint sensor market between 2014 and 2017 ...
(Date:3/1/2017)... -- Aware, Inc. (NASDAQ: AWRE), a leading supplier of biometrics ... has resigned, effective March 3, 2017, as co-Chief ... Treasurer of Aware citing a desire to retire.  Mr. ... the Board of Directors of Aware. ... co-President, General Counsel has been named Chief Executive Officer, ...
(Date:2/28/2017)... News solutions for biometrics, bag drop and New ADA-compliant kiosk ... At PTE 2017 ... Materna will present its complete end-to-end passenger journey, from ... benefit for passengers. To accelerate the whole passenger handling process, ... to take passengers through the complete integrated process with a ...
Breaking Biology News(10 mins):
(Date:3/28/2017)... March 28, 2017  Viking Therapeutics, Inc. ("Viking") (NASDAQ: ... of novel therapies for metabolic and endocrine disorders, today ... , Ph.D., will deliver a corporate presentation at H.C. ... Conference, being held April 3, 2017 at the St. ... for this presentation are as follows: ...
(Date:3/28/2017)... 2017 Focus is on ... due to the scientifically intensive operations of companies ... environmental, and industrial. In today,s pre-market research, Stock-Callers.com dedicates ... (NASDAQ: PTLA), OvaScience Inc. (NASDAQ: OVAS), Ocera Therapeutics ... OCUL ). Learn more about these ...
(Date:3/27/2017)... N.J. , March 27, 2017 Roka Bioscience, ... advanced testing solutions for the detection of foodborne pathogens,  today ... the Sidoti & Company Spring 2017 Convention on March 29 ... New York Marriott Marquis. About Roka Bioscience ... ...
(Date:3/27/2017)...  The global market for clinical laboratory services ... new report from Kalorama Information.  In addition to ... evaluate disease progression, monitor drug treatment and conditions, ... healthcare market research firm,s report, Clinical ... of the medical laboratory industry and the trends ...
Breaking Biology Technology: