Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Nanotubes help to solve desalination problem

Abstract:
A team of researchers from The Australian National University have discovered a way to remove salt from seawater using nanotubes made from boron and nitrogen atoms that will make the process up to five times faster.

Nanotubes help to solve desalination problem

Australia | Posted on August 26th, 2009

With 25 percent of the world's population currently affected by water shortages, researchers Dr Tamsyn Hilder, Dr Dan Gordon and group leader Professor Shin-Ho Chung from the Computational Biophysics Group at the Research School of Biology at ANU have come up with a way to eliminate all salt from seawater whilst maintaining high water flow rates. Their results have been published in the journal Small.

With population growth and climate change limiting the world's fresh water stores, desalination and demineralisation are fast becoming feasible solutions. However, there is an urgent need to make the process of desalination more effective and less costly than current methods. Nanotechnology-based water purification devices, such as those proposed by Hilder, Gordon and Chung, have the potential to transform the field of desalination.

"Boron nitride nanotubes can be thought of as a hollow cylindrical tube made up of boron and nitrogen atoms," said Dr Hilder. "These nanotubes are incredibly small, with diameters less than one-billionth of a meter, or 10,000 times smaller than the thickness of a single strand of human hair.

"Current desalination methods force seawater through a filter using energies four times larger than necessary. Throughout the desalination process salt must be removed from one side of the filter to avoid the need to apply even larger energies.

"Using boron nitride nanotubes, and the same operating pressure as current desalination methods, we can achieve 100 percent salt rejection for concentrations twice that of seawater with water flowing four times faster, which means a much faster and more efficient desalination process."

Hilder, Gordon and Chung use computational tools to simulate the water and salt moving through the nanotube. They found that the boron nitride nanotubes not only eliminate salt but also allow water to flow through extraordinarily fast, comparable to biological water channels naturally found in the body.

"Our research also suggests the possibility of engineering simple nanotubes that mimic some of the functions of complex biological nanotubes or nanochannels," said Professor Chung, and work is continuing to investigate these possibilities further. These devices, once successfully manufactured, may be used for antibiotics, ultra-sensitive detectors or anti-cancer drugs.

A copy of the paper is available at: dx.doi.org/10.1002/smll.200900349

####

About Australian National University
ANU was established by the Chifley government in 1946 to build the nation’s intellectual infrastructure. We are still driven by our founding mission to advance the cause of learning and research in Australia and take our place amongst the great universities of the world. Explore this gateway to find out more about our history, governance and structure, our campus and our community.

For more information, please click here

Contacts:
For interviews:
Dr Tamsyn Hilder
02 6125 4034 / 0401 481 575

Professor Shin-Ho Chung
02 6125 2024 / 0400 195 897

For media assistance:
Penny Cox
02 6125 3549 / 0424 016 978

Copyright © Australian National University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Renishaw receives Queen's Award for spectroscopy developments November 25th, 2014

JPK reports on the use of AFM and the CellHesion module to study plant cells at the University of Queensland November 25th, 2014

Vegetable oil ingredient key to destroying gastric disease bacteria: In mice, therapeutic nanoparticles dampen H. pylori bacteria and inflammation that lead to ulcers and gastric cancer November 25th, 2014

Research yields material made of single-atom layers that snap together like Legos November 25th, 2014

Possible Futures

A novel method for identifying the body’s ‘noisiest’ networks November 19th, 2014

Researchers discern the shapes of high-order Brownian motions November 17th, 2014

VDMA Electronics Production Equipment: Growth track for 2014 and 2015 confirmed: Business climate survey shows robust industry sector November 14th, 2014

Open Materials Development Will Be Key for HP's Success in 3D Printing: HP can make a big splash in 3D printing, but it needs to shore up technology claims and avoid the temptation of the razor/razor blade business model in order to flourish November 11th, 2014

Nanotubes/Buckyballs

Tesla NanoCoatings Increasing Use of SouthWest NanoTechnologies Carbon Nanotubes (CNTs) for its Infrastructure Coatings and Paints: High Quality SMW™ Specialty Multi-wall Carbon Nanotubes Incorporated into Teslan®-brand coatings used by Transportation, Oil and Gas Companies November 19th, 2014

Graphene/nanotube hybrid benefits flexible solar cells: Rice University labs create novel electrode for dye-sensitized cells November 17th, 2014

SouthWest NanoTechnologies to Demonstrate 3D Capacitive Touch Sensor Featuring Transparent, Thermoformed Carbon Nanotube Ink at Printed Electronics USA 2014 (Booth J25) -- “Conductive and Semiconducting Single-Wall Carbon Nanotube Inks” will be Topic of Company Presentation November 10th, 2014

Neural Canals Produced in Iran for Recovery of Sciatica Nerve November 8th, 2014

Announcements

Renishaw receives Queen's Award for spectroscopy developments November 25th, 2014

JPK reports on the use of AFM and the CellHesion module to study plant cells at the University of Queensland November 25th, 2014

Vegetable oil ingredient key to destroying gastric disease bacteria: In mice, therapeutic nanoparticles dampen H. pylori bacteria and inflammation that lead to ulcers and gastric cancer November 25th, 2014

Research yields material made of single-atom layers that snap together like Legos November 25th, 2014

Water

Iranian Experts Clean Uranium-Contaminated Water by Nano-Particles November 23rd, 2014

Nano Sorbents Able to Remove Pollutions Caused by Oil Derivatives November 20th, 2014

Application of Nanocomposites in Production of Photocatalysts for Water Treatment November 17th, 2014

Newly-Developed Enzyme Catalyst Able to Remove Pollutants from Wastewater November 12th, 2014

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More












ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE