Tag Archive | "Water"

Scientists producing hydrogen energy from water at 30x faster rate

Scientists from the University of Glasgow have claimed to have cracked the process of creating hydrogen fuel from water 30 times faster and is fast, cheap and clean.

The ability to be able to produce hydrogen fuel on a mass-scale that would be both economically feasible and energy efficient would be one of the major breakthroughs of the modern era, according to phys.organd published in the scientific journal, Science.

As the process of producing hydrogen energy is created by separating hydrogen in water through electrolysis, its use an energy source would be enormously beneficial given that it would emit no harmful emissions whatsoever.

While the process of creating hydrogen energy, the main issue with it being available on a larger scale has been its reliance on using fossil fuels to power the electrolysis which is counter-intuitive.

Now the Scottish team claim that their new liquid storage solution will be able to produce large quantities of clean energy at lower energy input provided by other renewable energies.

Explaining the process, Professor Lee Cronin said: “The process uses a liquid that allows the hydrogen to be locked up in a liquid-based inorganic fuel.

“By using a liquid sponge known as a redox mediator that can soak up electrons and acid we’ve been able to create a system where hydrogen can be produced in a separate chamber without any additional energy input after the electrolysis of water takes place.”

Prof Cronin furthermore says that as 95pc of the world’s hydrogen is produced by fossil fuels, mostly used in food production, the potential for the redox mediator, as a reliable hydrogen production from renewable sources is enormous.

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Clues to lunar history found in water in moon rocks

A recent review of hundreds of chemical analyses of Moon rocks indicates that the amount of water in the Moon’s interior varies regionally — revealing clues about how water originated and was redistributed in the Moon. These discoveries provide a new tool to unravel the processes involved in the formation of the Moon, how the lunar crust cooled, and its impact history.

This is not liquid water, but water trapped in volcanic glasses or chemically bound in mineral grains inside lunar rocks. Rocks originating from some areas in the lunar interior contain much more water than rocks from other places. The hydrogen isotopic composition of lunar water also varies from region to region, much more dramatically than in Earth.

The present consensus is that the Moon formed as the result of a giant impact of an approximately Mars-sized planetesimal with the proto-Earth. The water in the Moon is a tracer of the processes that operated in the hot, partly silicate gas, partly magma disk surrounding Earth after that impact.

The source of the Moon’s water has important implications for determining the source of Earth’s water, which is vital to life. There are two options: either, water was inherited by the Moon from Earth during the Moon-forming impact, or it was added to the Moon later by comets or asteroids. It might also be a combination of these two processes.

“Basically, whatever happened to the Moon also happened to the Earth,” said Katharine Robinson, lead author of the study and Graduate Assistant at the University of Hawaii’s — Mānoa (UHM) School of Ocean and Earth Science and Technology.

Robinson and Researcher G. Jeffrey Taylor, both at the UHM Hawaii’s Institute of Geophysics and Planetology, compiled water measurements from lunar samples performed by colleagues from around the world, as well as their own. Specifically, they measured hydrogen and its isotope, deuterium (hydrogen with an extra neutron in its nucleus) with ion microprobes, which use a focused beam of ions to sputter ions from a small rock sample into a mass spectrometer. The ratio of hydrogen to deuterium can indicate the source of the water or trace magmatic processes in the lunar interior.

When water was first discovered in lunar samples in 2008, it was very surprising because from the time Apollo astronauts brought lunar samples, scientists thought that the Moon contained virtually no water.

“This was consistent with the idea that blossomed during the Origin of the Moon conference in Kona in 1984 — that the Moon formed by a giant impact with the still-growing Earth, leading to extensive loss of volatile chemicals. Our work is surprising because it shows that lunar formation and accretion were more complex than previously thought,” said Robinson.

The study of water in the Moon is still quite new, and many rocks have not yet been studied for water. The HIGP researchers have a new set of Apollo samples from NASA that they will be studying in the next few months, looking for additional clues about the early life of Earth and the Moon.

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