[an error occurred while processing this directive]
Skip to Main Content

Latest News

April 12, 2010

Cigarette Butts Yield A Chemical Rebuttal

Recycling: Extracting anticorrosion compounds from spent cigarettes could benefit the environment and steel

Stephen K. Ritter

Useful eyesores Researchers extracted compounds that can be used as metal-corrosion inhibitors from cigarette butts found on the streets. Shutterstock
USEFUL EYESORES Researchers extracted compounds that can be used as metal-corrosion inhibitors from cigarette butts found on the streets.
  • Print this article
  • Email the editor

Latest News

October 28, 2011

Speedy Homemade-Explosive Detector

Forensic Chemistry: A new method could increase the number of explosives detected by airport screeners.

Solar Panel Makers Cry Foul

Trade: U.S. companies complain of market dumping by China.

Novartis To Cut 2,000 Jobs

Layoffs follow similar moves by Amgen, AstraZeneca.

Nations Break Impasse On Waste

Environment: Ban to halt export of hazardous waste to developing world.

New Leader For Lawrence Livermore

Penrose (Parney) Albright will direct DOE national lab.

Hair Reveals Source Of People's Exposure To Mercury

Toxic Exposure: Mercury isotopes in human hair illuminate dietary and industrial sources.

Why The Long Fat?

Cancer Biochemistry: Mass spectrometry follows the metabolism of very long fatty acids in cancer cells.

Text Size A A

Chinese researchers think there's great potential to do something useful with cigarette butts: Extract the chemicals trapped in the filter and in residual tobacco, and then use the resulting brew as an anticorrosion treatment for steel and other metal-based materials.

Cigarette butts are one of the most ubiquitous forms of pollution on the planet, with an estimated 4.5 trillion butts flicked out of car windows, tossed aside on sidewalks, or otherwise discarded each year. The environmental impact of cigarette butts goes beyond being an eyesore because chemicals leaching from residual tobacco are toxic to fish.

Jun Zhao of Xi'an Jiaotong University and coworkers extracted cigarette butts they picked up from the street or out of the garbage with water for 24 hours and used infrared spectroscopy and mass spectrometry to identify nine compounds in the solution. These included nicotine, as well as anthraquinone and β-carotene derivatives (Ind. Eng. Chem. Res., DOI: 10.1021/ie100168s).

The researchers acidified the extract and used it to treat steel disks, achieving up to 95% efficiency in preventing metal corrosion compared with untreated steel. They believe the chemical adsorb and form a protective layer on the metal surface. In addition, the leftover cellulose acetate from the filters is amenable to recycling to make other materials.

Zhao says her team is pursuing a patent on the process and would like to develop it on a large scale. But she believes ridding the world of cigarette butts will need the help of governments to provide incentives for systematically collecting them.

The paper on cigarette butts caught the attention of I&ECR Editor Donald R. Paul, a chemical engineer at the University of Texas, Austin. "There has been much research on developing corrosion inhibitors to combat the costly corrosion of metals," Paul says. "A few surprising reports and patents suggest tobacco products have some anticorrosion benefits. This paper adds further evidence for and details about potential corrosion inhibition by tobacco and suggests an interesting use for discarded cigarette butts."

Chemical & Engineering News
ISSN 0009-2347
Copyright © 2011 American Chemical Society
  • Print this article
  • Email the editor

Services & Tools

ACS Resources

ACS is the leading employment source for recruiting scientific professionals. ACS Careers and C&EN Classifieds provide employers direct access to scientific talent both in print and online. Jobseekers | Employers

» Join ACS

Join more than 161,000 professionals in the chemical sciences world-wide, as a member of the American Chemical Society.
» Join Now!