Elemental Contents (IMAGE) Aarhus University Caption The graphs show the contents of oxygen, hydrogen and carbon in HTL-oil before and after upgrading, compared to other fuel types. Credit Mørup et al., <I>Energy & Fuels</I>, 2012, 26 (9), 5944-5953 Usage Restrictions Image may only be used with appropriate caption or credit License Licensed content 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.