Powered By Java: Me & My Car

Let our journalists help you make sense of the noise: Subscribe to the Mother Jones Daily newsletter and get a recap of news that matters.


800px-A_small_cup_of_coffee.JPG Looking for a spare 340 million gallons of biodiesel? Waste coffee grounds can provide a cheap, abundant, and environmentally friendly source of biodiesel fuel for cars and trucks. Spent grounds contain 11-20 percent oil by weight—about the same as rapeseed, palm, and soybean oil. Growers already produce more than 16 billion pounds of coffee yearly and the spent grounds generally wind up in the trash.

To see if that oil from those grounds is worth putting into your diesel tank, researchers from the U of Nevada collected separated the oil from the grounds and used an inexpensive process to convert 100 percent of it into biodiesel.

The result: a coffee-based fuel that actually smells like java. Mmmm. Plus it’s more stable than traditional biodiesel due to the coffee’s high antioxidant content. The solids left over from the conversion process can be converted to ethanol or used as compost. The researchers estimate the process could make a profit of >$8 million a year in the U.S. alone. Worldwide it could produce 340 million gallons of biodiesel annually. The team plans to develop a pilot plant in the next eight months.

The study appears in the American Chemical Society’s Journal of Agricultural and Food Chemistry. Drink it up. Wake up your car.

Julia Whitty is Mother Jones’ environmental correspondent, lecturer, and 2008 winner of the PEN USA Literary Award, the Kiriyama Prize and the John Burroughs Medal.

FACT:

Mother Jones was founded as a nonprofit in 1976 because we knew corporations and the wealthy wouldn't fund the type of hard-hitting journalism we set out to do.

Today, reader support makes up about two-thirds of our budget, allows us to dig deep on stories that matter, and lets us keep our reporting free for everyone. If you value what you get from Mother Jones, please join us with a tax-deductible donation today so we can keep on doing the type of journalism 2020 demands.

payment methods

FACT:

Mother Jones was founded as a nonprofit in 1976 because we knew corporations and the wealthy wouldn't fund the type of hard-hitting journalism we set out to do.

Today, reader support makes up about two-thirds of our budget, allows us to dig deep on stories that matter, and lets us keep our reporting free for everyone. If you value what you get from Mother Jones, please join us with a tax-deductible donation today so we can keep on doing the type of journalism 2020 demands.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate