From Cup To Car

Image: Daniel Leal-Olivas/AFP/Getty Images

Coffee gets us started every morning.  Now it gets your car started too.

With help from Shell Oil Company, bio-bean, a company that has been collecting London’s 220,000 tons of annually spent coffee grounds, put their new biofuel into the gas tanks of London’s famous double decker buses.  By partnering with large coffee shops like Costa Coffee and Caffe Nero, a steady stream of grounds will produce enough fuel to power a city bus for a year.

On the American front, Mano Misra’s , Susanta Mohapatra’s, and Narasimharao Kondamudi’s study has been published online in the American Chemical Society’s (ACS) Journal of Agricultural and Food Chemistry, a bi-weekly publication.  Written by Mark T.Sampson, they report that waste coffee grounds provide a cheap, abundant, and environmentally friendly source of biodiesel fuel.  They found that spent coffee grounds contain between 11 and 20 percent oil by weight, which could add an estimated 340 million gallons of biodiesel to the world’s fuel supply.

In 2016, about 143.22 billion gallons of finished motor gasoline (a complex mixture of relatively volatile hydrocarbons with or without small quantities of additives, blended to form a fuel suitable for use in spark-ignition engines) were consumed in the United States.

The new “B20” coffee-based fuel smells like java and has the major advantage of being more stable than traditional biodiesel; due to coffee’s high antioxidant content.  Solids left over from the conversion can be converted to ethanol or used as compost.  The biofuel is 20% coffee oil, while the rest of the mix comes from fossil diesel.

Biofuels burn cleaner than fossil fuels, releasing less carbon into the atmosphere, but the production and harvesting of plants destined for fuel (like corn, wheat and sugarcane) can cancel out the benefits.  Using waste products—like coffee grounds—to create fuel minimizes damage to the environment on the production end, and reduces overloading of landfill.

Through a partnership with Argent Energy, many households in the UK have begun to use this in their homes.  This is a technology I want to hear more about.

Put Put Put Off You Go

Until next time,

Garbage Girl

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