Navigation Links
Researchers develop better membranes for water treatment, drug delivery
Date:11/29/2007

CHAMPAIGN, Ill. Researchers at the University of Illinois have developed a new generation of biomimetic membranes for water treatment and drug delivery. The highly permeable and selective membranes are based on the incorporation of the functional water channel protein Aquaporin Z into a novel A-B-A triblock copolymer.

The experimental membranes, currently in the form of vesicles, show significantly higher water transport than existing reverse-osmosis membranes used in water purification and desalination. The researchers describe their membranes in a paper accepted for publication in the Proceedings of the National Academy of Sciences. The paper is to be published in PNAS Online Early Edition this week.

We took a close look at how kidneys so efficiently transport water through a membrane with aquaporins, and then we found a way to duplicate that in a synthetic system, said Manish Kumar, a graduate research assistant at the U. of I., and the papers lead author.

Unlike most biological membranes, polymer membranes are very stable and can withstand considerable pressure essential requirements for water purification and desalination processes. Placing aquaporins in materials that we can use outside the body opens doors to industrial and municipal applications, Kumar said.

To make their protein-polymer membranes, the researchers begin with a polymer that self-assembles into hollow spheres called vesicles. While the polymer is assembling, the researchers add Aquaporin Z a protein found in Escherichia coli bacteria.

Aquaporin Z makes a hole in the membrane that only water can go through, so its both fast and selective, said membrane specialist Mark Clark, a professor of civil and environmental engineering and one of the papers co-authors.

By varying the amount of Aquaporin Z, we can vary the membranes permeability, Kumar said, which could be very useful for drug-delivery applications.

With their high permeability and high selectivity, the biomimetic membranes also are ideal for water treatment by desalination, which is becoming increasingly important for water purification in semiarid coastal regions.

When tested, the productivity of the Aquaporin Z-incorporated polymer membranes was more than 10 times greater than other salt-rejecting polymeric membranes.

Currently, the experimental polymer membranes exist only as small vesicles. Our next step is to convert the vesicles into larger, more practical membranes, Kumar said. We also want to optimize the membranes for maximum permeability.


'/>"/>

Contact: James E. Kloeppel
kloeppel@uiuc.edu
217-244-1073
University of Illinois at Urbana-Champaign
Source:Eurekalert

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Researchers discover new strategies for antibiotic resistance
8. Researchers find new taste in fruit flies: carbonated water
9. Binghamton University researchers investigate evolving malaria resistance
10. UIC researchers find promising new targets for antibiotics
11. Researchers develop simple method to create natural drug products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... -- The Department of Transport Management (DOTM) of ... US Dollar project, for the , Supply and ... and IT Infrastructure , to Decatur ... of Identity Management Solutions. Numerous renowned international vendors participated in ... was selected for the most compliant and innovative solution. ...
(Date:6/1/2016)... NEW YORK , June 1, 2016 ... Biometric Technology in Election Administration and Criminal Identification to ... According to a recently released TechSci Research report, " ... Sector, By Region, Competition Forecast and Opportunities, 2011 - ... $ 24.8 billion by 2021, on account of growing ...
(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... the release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” ... and retention in this eBook by providing practical tips, tools, and strategies for ...
(Date:6/23/2016)... Md. , June 23, 2016 A person ... from the crime scene to track the criminal down. ... the U.S. Food and Drug Administration (FDA) uses DNA evidence ... Sound far-fetched? It,s not. The FDA ... sequencing to support investigations of foodborne illnesses. Put as simply ...
(Date:6/23/2016)... 2016  The Biodesign Challenge (BDC), a university competition ... harness living systems and biotechnology, announced its winning teams ... New York City . The ... projects at MoMA,s Celeste Bartos Theater during the daylong ... senior curator of architecture and design, and Suzanne ...
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report published ... how a patient who developed lymphedema after being treated for breast cancer benefitted from ... the paradigm for dealing with this debilitating, frequent side effect of cancer treatment. ...
Breaking Biology Technology: