HOME >> BIOLOGY >> NEWS
Natural approach to cleaning up toxic freeway runoff urged

Taking a clever, low-cost and natural approach to the problem, UCLA researchers hope to prevent storm-water runoff from washing thousands of pounds of pollutants into the ocean each time it rains.

When the rain begins to fall in Southern California, the freeways get slippery because the water lifts the oil and grease that has collected on the pavement. The initial cloudburst also breaks loose tons of pollutants, sending them down the storm drains and into the ocean, according to Michael K. Stenstrom, professor of civil and environmental engineering at UCLA's Henry Samueli School of Engineering and Applied Science.

Stenstrom and his team are currently trying to ascertain how much higher the concentration of pollutants is in the first part of the storm-water runoff. If the data support his theory that the first burst of storm water contains the most potent concentration of toxins, Stenstrom said, "we have the opportunity for some natural treatment systems."

His goal is to find a way of reducing the amount of pollutants reaching the ocean. He hopes to use the data he is collecting "to save money because there is such a high volume of storm water that you can't possibly treat it all."

This is the fourth year of a $1.2 million research project, funded by Caltrans.

Mixed with the crankcase drippings and partially burned fuels that become polynuclear aeromatic hydrocarbons (PAHs), some of which are carcinogenic, the toxic stew that makes up storm-water runoff also contains heavy metals such as zinc, copper, nickel and chrome, Stenstrom said. Some of these are the products of automobile corrosion; some comes from brake pads.

"When a car hasn't been washed in a while, you can see a layer of black powder around the wheels. That powder is from the brake pads and can be loaded with heavy metals," Stenstrom said.

Stenstrom noted that some PAHs can be found in soot-like, micron-size particles. He cited diesel engines as one
'"/>

Contact: David Brown
media@ea.ucla.edu
310-206-0540
University of California - Los Angeles
31-Mar-2003


Page: 1 2 3

Related biology news :

1. Natural mineral locks up carbon dioxide
2. Naturalists of the Isthmus of Panama
3. Natural selection at work in genetic variation to taste
4. Natural, man-made mix promises biggest landscape plant growth
5. Natural enemies help scientists untangle tropical forest food webs
6. Natural killer cellers are made, not born
7. Natural selection in a nutshell
8. Natural fat compound may be basis for new class of drugs targeting obesity
9. Natural hormone could reverse heart damage
10. New biography details adventures of Fritz Muller, A Naturalist in Brazil
11. Natural selections fingerprint identified on fruit fly evolution

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/4/2017)... YORK , April 4, 2017   EyeLock ... today announced that the United States Patent and Trademark ... patent broadly covers the linking of an iris image ... same transaction) and represents the company,s 45 th ... latest patent is very timely given the multi-modal biometric ...
(Date:3/30/2017)... 30, 2017  On April 6-7, 2017, Sequencing.com will ... hackathon at Microsoft,s headquarters in ... focus on developing health and wellness apps that provide ... the Genome is the first hackathon for personal ... largest companies in the genomics, tech and health industries ...
(Date:3/30/2017)... 2017 Trends, opportunities and forecast in this ... technology (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, ... end use industry (government and law enforcement, commercial and ... and others), and by region ( North America ... Asia Pacific , and the Rest of the ...
Breaking Biology News(10 mins):
(Date:9/20/2017)... Station, TX (PRWEB) , ... ... ... Services, LLC (IPS), a leading global provider of engineering, architecture, project controls, ... provider of prefabricated cleanrooms, today announced the unveiling of the iCON™ brand ...
(Date:9/20/2017)... ... September 20, 2017 , ... RoviSys, a leading independent provider ... opening of an office in Taipei, Taiwan. This new location allows RoviSys to ... new relationships in the region. Located in the Neihu area of Taipei, the ...
(Date:9/19/2017)... ... September 19, 2017 , ... The new and improved Oakton® pocket testers, ... even stand upright with a new cap design that is versatile, functional and leakproof. ... who need to test water quality. , The Oakton pocket testers have many user-friendly ...
(Date:9/19/2017)... (PRWEB) , ... September 19, ... ... York State Department of Financial Services (NYS DFS) cybersecurity regulations have ... banking, finance and insurance organizations operating in the state (“Covered Entities”) to ...
Breaking Biology Technology:
Cached News: