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Review of co-processing of biocrudes in oil refineries

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The major compound groups in FPBO are water (20–25 wt %), carboxylic acids (∼ 5 wt %), aldehydes, ketones, and furfurals (25 wt %), sugar-like material (30–35 wt %), and lignin-derived compounds (20 wt %). In HTL, wet feedstock is liquefied in a hot (250–374 °C) and pressurized (4–22 MPa) water environment into biocrude oil.

Oil 448
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Researchers review risk to water resources from unconventional shale gas development in US

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They identified four potential modes of water resource degradation: (1) shallow aquifers contaminated by fugitive natural gas (i.e., They identified four potential modes of water resource degradation: (1) shallow aquifers contaminated by fugitive natural gas (i.e., Credit: ACS, Vengosh et al. Click to enlarge.

Water 306
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Interest in geologic hydrogen growing

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In 2020, Viacheslav Zgonnik, now the CEO of Natural Hydrogen Energy, published an open-access review of the geoscience of natural hydrogen in the journal Earth-Science Reviews. Using an interdisciplinary approach, this paper reviews current knowledge in the field of natural hydrogen. 2020.103140

Hydrogen 225
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GLBRC research review concludes cellulosic biofuels can benefit the environment if managed correctly

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Cellulosic biofuels could provide an environmentally sustainable way of meeting energy needs—but with a few important caveats, according to a new review of research by a team from the US Department of Energy-funded Great Lakes Bioenergy Research Center (GLBRC). Their paper is published in the journal Science.

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TMC pilot successfully collects seafloor polymetallic nodules, lifts to surface via 4 km riser

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From inside the collector, nodules were channeled to the jumper hose and into the riser where they were lifted on compressed air in a 12-minute-trip from seafloor to the Hidden Gem , where the return water was discharged to the midwater column at depth. Nodules on the conveyor.

Mariner 418
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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. An open-access paper on their work appears in the journal Renewable and Sustainable Energy Reviews. The researchers used a depth-cycling approach—i.e.,

Mariner 468
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PSI team develops web tool for consumers to compare environmental impact of passenger cars in detail

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Depletion of fresh water reserves [m 3 ]. Eutrophication of non-marine aquatic environments [kg N-eq.]. Eutrophication of non-marine aquatic environments [kg P-eq.]. Land occupation in an urban environment [m 2 / year]. Toxicity of marine aquatic environments [kg 1,4-DC-eq.]. in review).

Mariner 435