Medindia

X

Various Antimicrobial Metals for Use in Water Filters Evaluated

by Kathy Jones on  May 28, 2012 at 7:33 PM Research News   - G J E 4
Colloidal silver, which is often coated in porous ceramic water filters, prevents the growth of microbes trapped in the micro- and nano-scale pores of the filter.
 Various Antimicrobial Metals for Use in Water Filters Evaluated
Various Antimicrobial Metals for Use in Water Filters Evaluated
Advertisement

Other metals such as copper and zinc have also been shown to exhibit anti-microbial activity. Researchers from Princeton University in New Jersey used atomic force microscopy (AFM) measurements to study the adhesion interaction between Escherichia coli (E. coli) bacteria and colloidal silver, silver nanoparticles, and copper nanoparticles, as well as the interactions of the bacteria and the three different types of metal to porous clay-based ceramic surfaces. As reported in the American Institute of Physics' (AIP) Journal of Applied Physics, of the three antimicrobial metals studied the silver nanoparticles had the highest affinity for E. coli bacteria. The colloidal silver had the highest affinity for a porous ceramic surface and is therefore the least likely to leach into the filtrate. However, since the adhesion between colloidal silver and E. coli is in the same range as the adhesion between copper and the bacteria, copper may have potential as a less expensive disinfectant coating for ceramic water filters.

Advertisement


Source: Eurekalert
Advertisement

Post your Comments

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
User Avatar
* Your comment can be maximum of 2500 characters
Notify me when reply is posted I agree to the terms and conditions

You May Also Like

Advertisement
View All