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Evaluating methods for marine fuel sulfur content using microsensor sniffing systems on ocean-going vessels.
Sci Total Environ
September 2024
Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China. Electronic address:
Establishing emission control areas (ECAs) can effectively reduce air pollution from marine emissions, making efficient monitoring of the fuel sulfur content (FSC) of ocean-going vessels (OGVs) key to ECA policy enforcement. Various FSC detection approaches, including oil sample analysis, sniffing method, and optical remote sensing, have been proposed, each with its benefits and drawbacks. Among these, the sniffing method appears promising but requires further improvement in field operation protocol and data analysis processes.
View Article and Find Full Text PDFA Novel Biosurfactant-Based Oil Spill Response Dispersant for Efficient Application under Temperate and Arctic Conditions.
ACS Omega
February 2024
Department of Aquaculture, SINTEF Ocean, 7465 Trondheim, Norway.
Synthetic oil spill dispersants have become essential in offshore oil spill response strategies. However, their use raises significant concerns regarding toxicity to phyto- and zooplankton and other marine organisms, especially in isolated and vulnerable areas such as the Arctic and shorelines. Sustainable alternatives may be developed by replacing the major active components of commercial dispersants with their natural counterparts.
View Article and Find Full Text PDFFifty years of environmental progress for United States dairy farms.
J Dairy Sci
June 2024
AgNext, Colorado State University, Fort Collins, CO 80523.
Dairy farms in the United States have changed in many ways over the past 50 yr. Milk production efficiency has increased greatly, with ∼30% fewer cows producing about twice the amount of milk today. Other improvements include increases in crop yields, fuel efficiency of farm equipment, and efficiency in producing most resources used on farms (e.
View Article and Find Full Text PDFDevelopment of rapid and effective oil-spill response system integrated with oil collection, recovery and storage devices for small oil spills at initial stage: From lab-scale study to field-scale test.
J Environ Manage
November 2023
Department of Mechanical Engineering, Seoul National University, Seoul, 08826, South Korea; Institute of Advanced Machines and Design, Seoul National University, Seoul, 08826, South Korea. Electronic address:
In the present study, through the laboratory-to-field scale experiments and trials, we report the development and evaluation of an integrated oil-spill response system capable of oil collection, recovery (separation), and storage, for a timely and effective response to the initial stage of oil-spill accidents. With the laboratory-scale experiments, first, we evaluate that the water-surface waves tend to abate the oil recovery rate below 80% (it is above 95% for the optimized configuration without the waves), which is overcome by installing the hydrophilic (and oleophobic) porous structures at the inlet and/or near the water outlet of the separator. In the follow-up meso-scale towing tank tests with a scaled-up prototype, (i) we optimize the maneuverability of the assembled system depending on the speed and existence of waves, and (ii) evaluate the oil recovery performance (more than 80% recovery for the olive oil and Bunker A fuel oil).
View Article and Find Full Text PDFCharacterization of the physical and weathering properties of low sulfur fuel oil (LSFO) and its spreading on water surface.
J Hazard Mater
July 2023
Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea; Institute of Advanced Machines and Design, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:
Effective countermeasures against the marine pollution caused by spilled oil are enabled based on the understanding of its physical and weathering characteristics. In that sense, our knowledge of the newly enforced low-sulfur fuel oil (LSFO) needs to be secured urgently. First, we show that the oil viscosity increases with decreasing temperature, following the William-Landel-Ferry law developed for bunker oil.
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