Navigation Links
Simple approach could clean up oil remaining from Exxon Valdez spill
Date:9/29/2010

Traces of crude oil that linger on the shores of Alaska's Prince William Sound after the Exxon Valdez oil spill remain highly biodegradable, despite almost 20 years of weathering and decomposition, scientists are reporting in a new study. Their findings, which appear in ACS' semi-monthly journal Environmental Science & Technology, suggest a simple approach for further cleaning up remaining traces of the Exxon Valdez spill the largest in U.S. waters until the 2010 Deepwater Horizon episode.

Albert D. Venosa and colleagues note that bacteria, evaporation, sunlight, and other items in Mother's Nature's clean-up kit work together to break down the oil and make it disappear. Scientists have known for years that adding nitrogen and phosphorus fertilizer to oil-contaminated soil can speed the growth of bacteria that decompose, or biodegrade, oil. But it has been uncertain whether oil that has lingered in the environment for almost 20 years still is biodegradable, leaving questions on whether further clean-up efforts might be worthwhile.

The scientists collected oil-contaminated soil from different beaches in Prince William Sound and treated the samples with phosphorus and nitrogen fertilizer in the presence of excess oxygen from the air. Oil in the fertilized samples biodegraded up to twice as fast as oil in the unfertilized control samples, but significant biodegradation occurred even in the unfertilized controls. The results showed that oxygen supply was the major bottleneck, or limiting factor, in the field that prevented further decomposition of the oil. The scientists used data from the research to postulate a simple treatment scheme that would involve applying simple nitrate salts to possibly break down the natural organic matter in the sediment. That would cause an increase in sediment porosity that would allow dissolved oxygen in seawater to penetrate to the oiled zone and create oxygen-rich conditions that might stimulate more rapid biodegradation.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Related biology news :

1. Caltech chemists develop simple technique to visualize atomic-scale structures
2. Health diagnosis made simpler
3. The secret of life may be as simple as what happens between the sheets -- mica sheets
4. Research develops simple recipe for fungus-free horseradish
5. Study finds that simple 2-question survey can better identify hungry children
6. Cheap, simple, noninvasive blood test may replace invasive diagnostic techniques in early pregnancy
7. New study documents use of hormone progesterone in simple microscopic aquatic animals
8. Pitt researcher says simple polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico tests
9. Coral transplantation the simple and cheap solution to reef restoration
10. Sari cloth a simple sustainable protector from cholera
11. Transportation governed by simple rules
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/8/2017)... , Feb. 7, 2017 Report Highlights ... billion by 2021 from $8.3 billion in 2016 at ... 2016 to 2021. Report Includes - An overview ... global market trends, with data from 2015 and 2016, ... 2021. - Segmentation of the market on the basis ...
(Date:2/7/2017)... Feb. 7, 2017 Zimmer Biomet Holdings, Inc. ... healthcare, will present at the LEERINK Partners 6th Annual ... Hotel on Wednesday, February 15, 2017 at 10 a.m. ... the presentation can be accessed at http://wsw.com/webcast/leerink28/zbh .  ... conference via Zimmer Biomet,s Investor Relations website at ...
(Date:2/6/2017)... 2017 According to Acuity Market Intelligence, ... authorities to continue to embrace biometric and digital ... Automated Border Control (ABC) eGates and 1436 Automated ... than 163 ports of entry across the globe. ... a combined CAGR of 37%. APC Kiosks reached ...
Breaking Biology News(10 mins):
(Date:2/18/2017)... ... February 17, 2017 , ... A leader in ... Kong. , Nerium International is proud to introduce its Age-Defying Night Cream, NeriumAD™ ... Formula to consumers across Hong Kong. The luxury skincare products contain innovative ingredients ...
(Date:2/17/2017)... IPSWICH, Mass. , Feb. 17, 2017 /PRNewswire/ ... a small tumor had a mutation-conferring resistance to ... treatment. Recently, genomics research has focused on finding ... — or even from circulating tumor DNA in ... identify new oncology therapeutics. Unfortunately, however, ...
(Date:2/16/2017)... , ... February 16, 2017 , ... Avomeen & MichBio ... The event will be held at Avomeen Analytical Services (4840 Venture Dr., Ann Arbor, ... member organization. They provide an opportunity to interact with peers, make new connections and ...
(Date:2/16/2017)... Feb. 16, 2017  ArmaGen, Inc., a privately ... to treat severe neurological disorders, today reported preliminary ... AGT-181, the company,s investigational therapy for the treatment ... mucopolysaccharidosis type I, or MPS I). The initial ... study, presented today at the 13 th ...
Breaking Biology Technology: