Graphene-oxide membranes are known to be great filters. They have been modified in the past to be impermeable to all solvents except water. The International Business Times had reported in April that a team of researchers from the University of Manchester has made a breakthrough that could potentially change the way we drink water. They used a grapheme-oxide membrane that can be used as a sieve to remove salt from seawater. Now, the same team has tweaked the filter around a bit to remove the amber pigment from whiskey, making it clear.
In the world of engineering, you can usually trust nature to have done it first, and better. A newly-developed fuel cell technology looks to the cactus to solve a problem involving this promising but complex form of clean energy, which generates power without emitting planet-warming greenhouse gases. The technology, which is a thin plastic membrane, could help improve the performance of fuel cells to make them more useful for everything from electric cars to desalination plants. SEE ALSO: Elon Musk's SpaceX wants to send a spacecraft to Mars by 2018 The result of a collaboration between the CSIRO, Australia's peak science body, and Korea's Hanyang University, the research was published Thursday in the journal Nature. The new membrane aims to help keep fuel cells cool, Aaron Thornton, CSIRO researcher and the report's co-author, told Mashable Australia, solving a significant problem for the development of green technology.
April 7, 2017 --In recent decades, arid regions around the world have turned to the seas for drinking water. Desalination – removing salt from seawater – offers dry places from the Middle East to the American Southwest an alternative to scarce rainfall and groundwater. With 1.8 billion people projected to live "in countries or regions with absolute water scarcity" by 2025, the demand for solutions to water-supply challenges looks set to grow in coming years, according to the United Nations. Better filtration membranes could make desalination more viable as one of these solutions. Most modern plants use reverse osmosis, an energy-intensive process of pumping seawater through membranes to filter out the salt.
A UK-based team of researchers has created a graphene-based sieve capable of removing salt from seawater. The sought-after development could aid the millions of people without ready access to clean drinking water. The promising graphene oxide sieve could be highly efficient at filtering salts, and will now be tested against existing desalination membranes. It has previously been difficult to manufacture graphene-based barriers on an industrial scale. Reporting their results in the journal Nature Nanotechnology, scientists from the University of Manchester, led by Dr Rahul Nair, shows how they solved some of the challenges by using a chemical derivative called graphene oxide.