http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 13.92Change: 0.11
R/$ = 11.01Change: 0.03
Au 1242.32 $/ozChange: -2.42
Pt 1265.50 $/ozChange: -4.50
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Contact Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Jul 20, 2012

Geo-engineering concept punted as possible climate change mitigator

Back
Engineering|PROJECT|The Philippines|Insurance Policy|Paint|Mount Pinatubo|Peter Davidson
Engineering|PROJECT||||
engineering|project|the-philippines|insurance-policy|paint|mount-pinatubo|peter-davidson
© Reuse this

Dispersing fine light-scattering particles into the upper atmosphere could help combat climate change, suggests a member of the Institution of Chemical Engineers (IChemE) and Royal Academy of Engineer- ing chartered chemical engineer Peter Davidson.

The technology involves dispersing benign titanium dioxide particles found in paint, inks and sunscreens into the stratosphere to deflect the sun’s rays.

“We have called for this geo-engineering concept to be properly researched as an insurance policy to cope with the possible catastrophic effects of global warming if we don’t manage to reduce emissions fast enough,” says Davidson.

He explains the concept mimics the earth-cooling effects of large volcanic eruptions, which occur several times during a century.

In 1991, Mount Pinatubo, in the Philippines, erupted and caused a 0.5 ºC global reduction in temperatures.

The eruption released 20- million tons of sulphur dioxide into the stratosphere, forming a fine mist of sulphuric acid particles, which spread around the globe within months.

“Volcanic aerosol particles are similar to the wavelength of sunlight in size, enabling them to reflect some light back into space,” says Davidson.

He claims that titanium dioxide is stable in air, nontoxic and seven times more effective at scattering light than sulphuric acid.

“The total capital cost of the project could be £500- million plus a further £600- million in yearly operating costs, which are about 30 times lower than the next best technologies offered to complete such a mammoth task,” he says.

Further, more than a million tons of titanium diox- ide would need to be dispersed each year for 50 to 150 years to keep global warming under control.

Edited by: Martin Zhuwakinyu
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Environment News
Particulate matter pollution remains a problem in major cities and industrial zones in Gauteng, Mpumalanga and KwaZulu-Natal. The most populated and industrial areas are consistently above the Air Quality Act standards for particulate matter and significantly above...
South Africa has for the first time been elected to the United Nations (UN) Convention on Biological Diversity (CBD) Conference of the Parties (CoP) bureau, strengthening the country’s status as a global player in the biodiversity field, the Department of...
WATER IMPORTANCE The major problem with the current management of water infrastructure is a lack of uniformity
Managing risk in the water services sector is key to the longevity and cost efficiency of South Africa’s water infrastructure, according to multinational professional services firm Arup.
More
 
 
Latest News
Trade union Solidarity warned on Wednesday that ongoing restructuring and retrenchments in the information and communication technology (ICT) industry continued to put employees in the sector under “immense” pressure. This as the union claimed it had received...
Directors of investment holding company Combined Motor Holdings (CMH) say they are satisfied with the results achieved in the six months ended August 31, during which time the local economic environment continued to battle impediments to growth and national dealer...
In the Medium-Term Budget Policy Statement Finance Minister Nhlanhla Nene has outlined concrete plans to consolidate South Africa’s pubic finances and restore macroeconomic balances. The proposed adjustments – lower than planned spending and increased tax revenues -...
More
 
 
Recent Research Reports
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail network, the funding and maintenance of these respective networks, and the push to move road...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
 
 
 
 
 
This Week's Magazine
The broad-based black economic-empowerment (BBBEE) alignment process in the con-struction sector has begun, dur-ing which the sector codes of the Construction Sector Charter Council (CSCC) will be aligned with the revised Codes of Good Practice (CoGP), which come...
It is second time lucky for Toby Venter. Ten years ago he negotiated to buy the Kyalami racetrack, but “the deal did not materialise”.
Environmental solutions company I-Cat started construction work on its R22-million, 1 949 m2 environmentally sustainable office and warehouse facility, commissioned by I-CAT Environmental Solutions, at a launch event in October. The new sustainable I-CAT campus,...
IAN EVANS AirWatch file synchronisation and sharing system was initially designed for a large airline company
Effective file synchronisation and sharing across an organisation’s structures can provide the basis for robust mobile-device and document management while maintaining proper backup, version control and content distribution. These are the lessons learned by complex...
Hotel group Carlson Rezidor currently holds the largest hotel pipeline in Africa with 30 hotels and 6 300 rooms under development. The hotel group develops and operates Radisson Blu in the upper upscale segment and Park Inn by Radisson in the mid-market segment. With...
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks