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Category: energy – Page 158

Copper prices have surged in 2021. The base metal remains in high demand, much thanks to its need in green energy projects and electric cars. In May 2021, commodities analysts at Goldman Sachs called copper ‘the new oil.’ That’s because electric cars need several times more copper than their gas-powered counterparts. And power grids getting electricity from wind, solar and hydro sources also need copper—much more than the industry is currently producing. Here’s how copper became so important to the world economy and the green energy revolution.

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Why a looming copper shortage has big consequences for the green economy.

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Virginia is going from near-zero wind power to 2.6 gigawatts all at once, with the approval of a new offshore wind plan for Dominion Energy.

California is making waves with a big announcement of big plans for offshore wind, but the Golden State already hosts hundreds of wind turbines on shore. The really big news on the wind front is all the way across the country in Virginia, which has practically zero megawatts to its credit, onshore or off. That’s about to change all at once. Utility regulators in Virginia just stamped their seal of approval on a massive, Texas-sized offshore wind farm to the tune of 176 wind turbines totaling almost 2.6 gigawatts.

Wait, How Does An Offshore Wind Turbine Get To 14.7 Megawatts?

The new offshore wind farm comes under the umbrella of the Virginia-based company Dominion Energy, and we have questions.

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Researchers at Aalto University have developed a bio-based adhesive that can replace formaldehyde-containing adhesives in wood construction. The main raw material in the new adhesive is lignin, a structural component of wood and a by-product of the pulp industry that is usually burned after wood is processed. As an alternative to formaldehyde, lignin offers a healthier and more carbon-friendly way to use wood in construction.

The carbon footprint of timber construction is significantly lower than concrete construction, and timber construction has often been viewed as better for the health of human occupants as well. However, wood panels still use adhesives made from fossil . They contain formaldehyde, which can be harmful to health, especially for those working in the adhesive manufacturing process. People living in or visiting buildings can also be exposed to toxic formaldehyde from wood panels.

Lignin, on the other hand, comes from wood itself. It binds cellulose and hemicellulose together and gives wood its tough, strong structure. Lignin accounts for about a quarter of the weight of wood and is produced in huge quantities in the pulp and bioprocessing industry. Only two to five percent of the produced is used, and the rest is burned in factories for energy.

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Scientists in the Netherlands have developed a model to forecast the energy yield of a PV system. It is able to take into account factors such as partial shading and multiple module orientations. Tested against a reference cell and pyranometer, the model showed less than 5% error, and the scientists claim their approach is up to three orders of magnitude faster than more common approaches using complex ray tracing.

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Toxoplasma gondii (T.gondii) is a common parasite, one that scientists say may infect more than half the world’s population. Now, scientists also believe that T.gondii may be manipulating its hosts to make them more attractive to others. If true, it means there may be a parasite out there that makes people more attractive to fuel its spread to new hosts through sexual activity.

Parasites have always been known to influence the way their hosts behave when trying to move to a new host. T.gondii itself has been known to manipulate its hosts. Researchers previously discovered that the parasite could make infected rats attracted to the smell of urine from predator cats. This led the rats to take part in riskier behavior. As a result, the likelihood of a cat eating the rat increased dramatically.

This allowed the parasite to move on to its optimal host. Once it has reached that optimal host, though, the parasite can then reproduce sexually. What’s most terrifying about how this parasite works is that the manipulation doesn’t stop there. Instead, similar manipulations have been seen in chimpanzees, hyenas, and humans, too. If the parasite can make people more attractive, it could spread more easily.

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Batteries provide energy to electronic devices. Your body generates and uses energy. Ergo, you’re basically a battery.

As you run, walk, or even breathe, your body is moving. A system fine-tuned enough to collect and store that output can transpose it into energy for the electronics we carry with us everyday. The obvious substrate in which to build such a system is our clothes, since they move along with us.

But without a series of wires or magnetic coils, how can cotton, wool, polyester, or even leather garments collect, store, and transport electricity? A team at Nanyang Technological University (NTU) in Singapore thinks it has the answers to finally harness your inner generator—and keep you from needing to borrow a charging cord.

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The world is highly dependent on fossil fuels to power its industry and transportation. These fossil fuels lead to excessive carbon dioxide emission, which contributes to global warming and ocean acidification. One way to reduce this excessive carbon dioxide emission that is harmful to the environment is through the electroreduction of carbon dioxide into value-added fuels or chemicals using renewable energy. The idea of using this technology to produce methane has attracted wide interest. However, researchers have had limited success in developing efficient catalysts for methane.

A Soochow University research team has now developed a simple strategy for creating cobalt copper alloy catalysts that deliver outstanding methane activity and selectivity in electrocatalytic carbon dioxide reduction. Their research is published in Nano Research.

Over the past 10 years, scientists have made notable progress in advancing their understanding of catalysts and applying the knowledge to their fabrication. But the catalysts that have been developed have not been satisfactory for use with methane, in terms of selectivity or current density. Despite the great insights scientists have gained, the strategies they have attempted in creating catalysts for methane are just too costly to be useful in practical applications.

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For the first time ever, electricity is delivered through heated supercritical carbon dioxide.

The method has so far succeeded in adding 10 kilowatts to the grid.

Researchers were inspired by elevators to create the system.

They are now trying to get it to function at higher temperatures.

For the first time ever, Sandia National Laboratories have used heated supercritical carbon dioxide instead of steam to generate electricity, according to a press release by the organization. The breakthrough happened at the Sandia-Kirtland Air Force Base electrical grid.

A non-toxic stable material

The organization described supercritical carbon dioxide as a non-toxic, stable material that is under so much pressure that it behaves like both a liquid and a gas. Because it stays within the system and is not released as a greenhouse gas, it can get much hotter than steam (1,290 degrees Fahrenheit or 700 Celsius). These temperatures allow it to be much more efficient at turning heat from power plants into energy.

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