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OSU team develops process to clean coal mine drainage and extract rare earth elements

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Researchers at The Ohio State University have developed a novel process to clean coal mine drainage and extract rare-earth elements from it. The TEP process uses the alkalinity and filtering capacity of stabilized flue gas desulfurization (sFGD) material or water treatment plant (WTP) sludge to remediate CMD waters and extract REEs.

Coal 283
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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. —Vikas Nandwana.

Water 243
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Double-duty catalyst generates hydrogen fuel while cleaning up wastewater

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Herein, we are aiming to construct a dual-functional photocatalyst system which can degrade pollutants and simultaneously split water to generate hydrogen. Harnessing the sun’s energy to split water to make hydrogen fuel is a promising renewable resource, but it is a slow process even when catalysts are used to speed it along.

Hydrogen 243
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Efficient recovery of lithium from spent LiFePO4 batteries via air oxidation–water leaching at room temperature

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Researchers in China report using air oxidation–water leaching to recover lithium selectively from spent LiFePO 4 (LFP) material, in which the high leaching efficiency of lithium and the good separation effect of lithium and iron were achieved simultaneously. An open-access paper on their work is published in the RSC journal Green Chemistry.

Water 186
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T&E: tests show cars powered by electrofuels emit high levels of criteria pollutants

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Proponents claim that if renewable electricity is used and CO 2 is captured from the air, then the e-gasoline and e-diesel are climate-neutral fuels that will also reduce pollution. The ethanol and e-fuel would separate out similarly to oil and water. However, said T&E, particle pollution was far from eliminated. pollution.

Pollution 186
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Ice core data show why air pollution is dropping more slowly in US and Western Europe despite lower sulfur emissions

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Low-sulfur gasoline standards and regulations on power plants have successfully cut sulfate concentrations in the air, reducing the fine particulate matter that harms human health and cleaning up the environmental hazard of acid rain. This makes conversion of sulfur dioxide to sulfate more efficient.

Pollution 221
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Study provides insight into mechanism of atmospheric new particle formation in polluted cities

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de novo rather than as direct emissions—via nucleation and growth is a major source of aerosol pollution in terms of number concentration. In spite of a great deal of research, it is still a puzzle why and how such new particule formation (NPF) occurs in a highly polluted urban atmosphere.

Pollution 186