The Salt for the People

via GIPHY

For the region of Uttar Pradesh anemia is a big problem and the solution is to be salted. At the University of Toronto they have developed a new kind of salt that has been proven to reduce amen rates and improve the health of the population. Called double-fortified salt the new kind of salt is iron rich which took 20 years of research to create. It’s been proven to work in India so maybe it can work in other parts the world too.

Diosady began testing the efficacy of his creation during a pilot project in 2004 in the Indian state of Tamil Nadu, where the government supplies impoverished school children with one hot meal each day.

Regular salt was replaced with double-fortified salt in the lunches of more than three million children, 85 per cent of whom were anemic.

“In eight months, we cured a million kids from anemia,” Diosady said. “At the end, only 50 per cent were anemic.”

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Beets for Road Ice Removal

The traditional approach to deicing roads is to cover the roads (and thus the ground around the road) in salt – which is absolutely awful for the environment. Because so many people drive cars the demand for road salt is high and has come to negatively impact local economies and environments.

There is a solution to make salting less damaging and it’s already being used in some communities.

Beets are usually just used to create sugar or, like at Schrute Farms, beet soup. In Ontario roadworks departments have been using a byproduct from beet sugar processing to clear ice off of roads. They mix the beet byproduct with salt to create a new brine that works better and harms less.

Niagara Region has used the mixture for about three years, resulting in a 30 per cent reduction in road salt which damages tender fruit trees and vines, said Dave MacLeod, the region’s manager of transportation operations and technology.
The Ontario transportation ministry is working with Oakville and Grey County to test the effectiveness of other beet juice-based products that are added to brine, said a ministry spokesman.
“The ministry’s objective is to provide safe highways for all travellers by using the best available technology. At the same time, we recognize our responsibility to protect the environment, so we use technology to help us determine the best way to clear our highways in the most environmentally friendly, cost-effective way,” he said.

Read more at The Star.

Solar Power with Salt

Thermal solar power plants uses energy from the sun to heat up water and then run the resulting steam to power turbines. Simple enough, but now Siemens is looking to make that whole process more efficient by using salt.

Solar thermal power plants that produce hotter steam can capture more solar energy. That’s why Siemens is exploring an upgrade for solar thermal technology to push its temperature limit 160 °C higher than current designs. The idea is to expand the use of molten salts, which many plants already use to store extra heat. If the idea proves viable, it will boost the plants’ steam temperature up to 540 °C—the maximum temperature that steam turbines can take.

Siemens’s new solar thermal plant design, like all large solar thermal power plants now operating, captures solar heat via trough-shaped rows of parabolic mirrors that focus sunlight on steel collector tubes. The design’s Achilles’ heel is the synthetic oil that flows through the tubes and conveys captured heat to the plants’ centralized generators: the synthetic oil breaks down above 390 °C, capping the plants’ design temperature.

Startups such as BrightSource, eSolar, and SolarReserve propose to evade synthetic oil’s temperature cap by building so-called power tower plants, which use fields of mirrors to focus sunlight on a central tower. But Siemens hopes to upgrade the trough design, swapping in heat-stable molten salt to collect heat from the troughs. The resulting design should not only be more efficient than today’s existing trough-based plants, but also cheaper to build. “A logical next step is to just replace the oil with salt,” says Peter Mürau, Siemens’s molten salt technology program manager.

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