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UN delegates reach agreement on protecting marine biodiversity in international waters

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Delegates of the Intergovernmental Conference on Marine Biodiversity of Areas Beyond National Jurisdiction (BBNJ) have finalized a text to ensure the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction, calling it a “breakthrough” after nearly two decades of talks.

Mariner 218
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ICCT life-cycle analysis finds no climate benefit in using LNG as marine fuel

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The results of a new analysis by the International Council on Clean Transportation (ICCT) show that, when combined with a trend toward higher methane leakage and combustion slip, there is no climate benefit from using liquefied natural gas (LNG) as a marine fuel—regardless of the engine technology. First, it contains very little sulfur.

Mariner 427
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Oleophobic hydrophobic magnetic sponge selectively soaks up oil, sparing water and wildlife

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A Northwestern Engineering-led team has developed a highly porous smart sponge that selectively soaks up oil in water. With an ability to absorb more than 30 times its weight in oil, the sponge could be used to clean up oil spills inexpensively and efficiently without harming marine life. —Vikas Nandwana.

Water 243
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UCSD/Sapphire team shows marine algae can be engineered to perform as well as fresh water algae to produce enzymes and biofuels; removing the constraint of fresh water

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have demonstrated for the first time that genetically engineered marine algae can be just as capable as fresh water algae in producing industrially relevant products such as enzymes or biofuels. What our research shows is that we can achieve in marine species exactly what we’ve already done in fresh water species.

San Diego 299
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USC study shows promising potential for giant-kelp-based biofuel with depth-cycling approach

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physically moving the macroalgae between deep nutrient-rich water at night and shallow depths within the photic zone during the day to optimize growth. 13 C values suggesting that the depth-cycled kelp were not nitrogen-deficient and assimilated nutrients from deep water. The researchers used a depth-cycling approach—i.e.,

Mariner 468
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Researchers devise seawater-resilient bipolar membrane electrolyzer for turning seawater into hydrogen

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Generation of H 2 and O 2 from untreated water sources represents a promising alternative to ultrapure water required in contemporary proton exchange membrane-based electrolysis. —Marin et al. Resources D.H. Marin, J.T. Perryman et al. 2023.03.005

Hydrogen 418
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MBL begins first test of tropical seaweed farming for biofuels production

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A team of researchers led by Loretta Roberson, associate scientist at the Marine Biological Laboratory, Woods Hole, has installed the first seaweed farm in Puerto Rico and US tropical waters. Facilitating research of this nature will be key for the development of sustainable aquaculture in this area. —Loretta Roberson.