Waste Coffee Grounds (image) American Chemical Society Caption Waste coffee grounds can provide a cheap, abundant source of biodiesel fuel (shown), researchers say. Credit Narasimharao Kondamudi, University of Nevada-Reno. Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.