Oak Ridge Lab runs blended bio-oil for green ship fuel

September 26, 2024 |

In Washington D.C. the U.S. Department of Energy’s Bioenergy Technology Office announced Oak Ridge National Laboratory successfully tested biointermediates in marine engines, representing a significant milestone in the quest to decarbonise large ocean-going vessels. In collaboration with national labs NREL, PNNL, and ANL, ORNL evaluated biointermediates derived from wood and municipal waste in a unique single-cylinder marine research engine, the Enterprise. Funded by BETO, the study aims to explore the feasibility of using biofuels in cargo and container ships, which contribute 3% of global greenhouse gas emissions.

The tests focused on biointermediates produced via fast pyrolysis and hydrothermal liquefaction, blended with very low sulfur fuel oil. The engine performed well with blends of up to 20%, showing no significant changes in combustion timing, power output, or emissions—key findings that demonstrate biofuels can seamlessly integrate with existing engine systems.

This research marks the first time such biointermediates have been successfully tested in a marine diesel engine, providing confidence for future trials at higher blend levels. With onboard ship testing planned by 2027, the study supports the International Maritime Organization’s goal of net-zero emissions by 2050, offering a pathway to cleaner maritime fuel solutions.

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Category: Sustainable Marine Fuels

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