Bio-bean partnered with Shell on demonstration project London-based company also makes biomass pellets from coffee London’s iconic red double-decker buses will soon run on a biofuel partially made from old coffee grounds. The fuel will be supplied by a demonstration project set up by Bio-bean Ltd. , a London-based company that joined with Royal Dutch Shell Plc on the initiative. It will produce 6,000 liters (1,583 gallons) a year of the fuel. “It’s got a high oil content, 20 percent oil by weight in the waste coffee grounds, so it’s a really great thing to make biodiesel out of,” said Arthur Kay, founder of Bio-bean, in a phone interview. As public pressure mounts against using food for fuel, companies are increasingly focusing on biofuels made from waste such as used cooking oil and inedible plants. Some crops such as corn and sugarcane are made into ethanol to be burned […]