JUL 22, 2019 4:47 PM PDT

Littered Cigarette Butts are Harmful to Plants

WRITTEN BY: Tiffany Dazet

What do you think of when you hear the words, "plastic pollution"? Beverage bottles, straws, and packaging are probably just a few items that come to mind. However, cigarette butts are one of the most prevalent forms of plastic pollution on Earth, with approximately 4.5 trillion butts littered every year. In addition to the assortment of chemicals contained in a single cigarette butt, the cellulose acetate fiber filter poses a severe risk to the environment.

In a first-of-its-kind study, researchers from Anglia Ruskin University in Cambridge, England performed a series of experiments to determine how discarded cigarette butts may impact plant growth. They used both regular and menthol unsmoked, smoked, or partially smoked cigarettes. The plants they chose are common in both urban and agricultural areas: ryegrass and white clover. They added the cigarette butts to pots with each plant and monitored how the plants' development was impacted. Additionally, researchers counted cigarette butts around Cambridge and found areas with up to 128 discarded butts per square meter (with an average of 2.6 discarded butts per square meter).

Their study determined that the presence of any type of cigarette butt—regular or menthol, smoked or unsmoked—in soil reduced white clover germination success by 27% and stem length by 28%. Overall root biomass reduced by 57%. Ryegrass was also negatively impacted with a 10% reduction in germination success and 13% reduction in stem length. The filters caused an increased in chlorophyll-a in clover stems and chlorophyll-b in grass stems.

In a statement from ARU, lead author Dr. Dannielle Green said, "Many smokers think cigarette butts quickly biodegrade and therefore don't really consider them as litter. In reality, the filter is made out of a type of bioplastic that can take years, if not decades, to break down." 

Dr. Green and her research team encourage more research on this topic, and in the meantime, raising social awareness about cigarette filter litter is a vital first step. She'd like to see cigarette butt littering become as socially unacceptable as all other forms of littering. She said, "We need to raise awareness that the filters do not disappear and instead can cause serious damage to the environment."

Source: PHYS, Ecotoxicology and Environmental Safety

About the Author
  • Tiffany grew up in Southern California, where she attended San Diego State University. She graduated with a degree in Biology with a marine emphasis, thanks to her love of the ocean and wildlife. With 13 years of science writing under her belt, she now works as a freelance writer in the Pacific Northwest.
You May Also Like
APR 19, 2020
Earth & The Environment
APR 19, 2020
Enough is enough.
Who are we kidding? All these far-fetched climate change solutions aren’t actually helping anybody – if anyt ...
APR 27, 2020
Earth & The Environment
APR 27, 2020
Air pollution increasing in Africa
New research published in Environmental Research Letters reports that air pollution in Africa has increased significantl ...
MAY 12, 2020
Plants & Animals
MAY 12, 2020
It's Not a Choice - Cats Need Meat
While you or I might have the freedom of deciding between a carnivorous diet or going all out vegetarian, not all a ...
MAY 18, 2020
Earth & The Environment
MAY 18, 2020
How to use commerical aircraft to measure CO2 emissions
New research published in Scientific Reports turns to aircraft data to fill gaps in emissions monitoring of global green ...
MAY 26, 2020
Earth & The Environment
MAY 26, 2020
"Green Snow" Expected to Increase in Antarctica
When Antarctica comes to mind, the imagery probably includes a vast, frozen, and barren landscape. However, red and gree ...
JUN 26, 2020
Earth & The Environment
JUN 26, 2020
Another 2020 plague: locusts
2020 is determined to be a year to remember. On top of the global COVID-19 pandemic, the worst locust outbreak seen in o ...
Loading Comments...