Skip to main content

Point-Of-Use Disinfection of Drinking Water using Cationic Antimicrobial Surface Coatings

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


One of the most pressing challenges of our time is securing safe water and sanitation to the billions who lack access. Point-of-use (POU) drinking water treatment devices are a promising way to provide water of improved microbial quality where centralized water treatment and distribution infrastructure is unavailable or mismanaged. A promising new potential technology for POU water treatment is antimicrobial filtration using quaternary ammonium silane (QAS) covalently bound to filtration media. These coatings are inexpensive, easy to apply, robust, and effective antimicrobial agents with the potential to be regenerated. Here we evaluate the performance of sands coated with dimethyloctadecyl [3-(trimethoxysilyl)propyl] ammonium chloride at filtering E. coli. Up to 6.1 log removal of E. coli was observed for coated sands, compared to no removal in columns containing uncoated sand. Removal is dependent on filter depth, but insensitive to flow velocity.

Keywords: antimicrobial; coating; drinking water; point-of-use; quaternary ammonium; surface; water; water treatment

Document Type: Research Article


Publication date: January 1, 2009

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more