Thursday, March 24, 2016

Discovering more efficient storage of green energy |

“Today on a solar farm or a wind farm, storage is typically provided with batteries. But batteries are expensive, and can typically only store a fixed amount of energy,” says Sargent. “That’s why discovering a more efficient and highly scalable means of storing energy generated by renewables is one of the grand challenges in this field.”

This device efficiently splits water into its component elements, hydrogen and oxygen, storing energy as H2. The key is a new catalyst based on abundant metals tungsten, iron and cobalt, that is three times more efficient than the current state-of-the-art.

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Monday, March 14, 2016

Desert cactus purifies contaminated water for aquaculture, drinking and more |

Farm-grown fish are an important source of food with significant and worldwide societal and economic benefits, but the fish that come from these recirculating systems can have unpleasant tastes and odors. To clean contaminated water for farmed fish, drinking and other uses, scientists are now turning to an unlikely source—the mucilage of cacti.
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