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US MARAD study finds marine use of natural gas substantially reduces some air pollutants and slightly reduces GHG emissions

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A recently released total fuel cycle analysis for maritime case studies shows that natural gas fuels reduce some air quality pollutants substantially, and reduce major greenhouse gas (GHG) emissions slightly, when compared to conventional petroleum-based marine fuels (low-sulfur and high-sulfur).

Mariner 291
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EPA announces $46M for latest Diesel Emissions Reduction Act funding

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The US Environmental Protection Agency (EPA) announced the availability of grant funding to implement projects which reduce emissions from the nation’s existing fleet of older diesel engines. Under this competition, EPA anticipates awarding between 40 and 70 assistance agreements.

EPA 207
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Neste charters two new lower-emission tankers from Terntank; methanol and sails

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Neste has signed an agreement to charter two new lower-emission product tankers from Terntank. At the refineries, products such as renewable diesel and sustainable aviation fuel (SAF) will be loaded for transport. The ships can operate on new low-emission fuels such as e-methanol to meet net-zero emission goals.

Emissions 300
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ORNL computational study finds 15% bio-oil mixture in two-stroke marine engines can cut NOx 13% with efficiency parity

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A team at Oak Ridge National Laboratory (ORNL) has developed a new computational model of a two-stroke scaled marine engine, with reduced chemical mechanisms for diesel, biodiesel, bio-oil, and polycyclic aromatic hydrocarbons (PAH). This work aims to develop a computational model of a scaled marine engine. —Chuahy et al.

Mariner 170
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UBC researchers find life-cycle GHG benefits of LNG in marine shipping only from high-pressure dual-fuel engines in ocean-going vessels

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A life-cycle assessment of emissions from domestic and imported liquefied natural gas (LNG), and heavy-fuel oil (HFO) for marine shipping by a team from the University of British Columbia has found that only high-pressure dual-fuel (HPDF) engines robustly reduce well-to-wake GHG emissions by 10% compared with their HFO-fueled counterparts.

Mariner 236
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EU research project IDEALFUEL seeks to develop marine low-sulfur heavy fuel oils from biomass; Bio-HFO

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In an EU-funded research project, an international consortium is aiming to develop new production methods for sustainable marine fuels to replace heavy fuel oils in shipping. IDEALFUEL seeks to develop methods to convert woody residual and waste materials such as sawdust and wood chips into renewable marine fuels.

Mariner 273
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EPA announces ~$44M in DERA funding to reduce emissions from diesel engines

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The US Environmental Protection Agency (EPA) is announcing the availability of grant funding to implement projects aimed at reducing emissions from the nation’s existing fleet of older diesel engines. EPA anticipates awarding approximately $44 million in Diesel Emission Reduction Program (DERA) grant funding to eligible applicants.

EPA 170