Poly(hexamethylene guanidine)-poly(ethylene glycol) solid blend for water microbial deactivation

Poly(hexamethylene guanidine)-poly(ethylene glycol) solid blend for water microbial deactivation Polyhexamethylene guanidine hydrochloride (PHMG) is a cationic polymeric biocide used in the treatment of contaminated drinking water. This article describes a PHMG controlled release system made from melt blend of PHMG and solid PEG rods. The polymeric blend system gradually dissolves upon contact with running water and release effective and safe doses of PHMG to the passing water. The PEG-PHMG rod units were installed in a water purifier system, and microbial inactivation efficiency was tested according to the WQA certification program against P231/EPA for 250 L, using 25 L of passing water per day with a flow rate of 8–10 min per liter. The released PHMG was analyzed by Raman spectroscopy, and the antimicrobial activity was determined against Escherichia coli and the virus surrogate, MS2. A constant release of 0.35–0.5 ppm PHMG along 250 L of passing water was achieved. Inactivation results exceeded the minimal requirement for bacterial removal of 4–5 log reduction throughout the entire 250L. The rod height correlated with amount of water eroding the rod from bottom surface. Thus, these PEG/PHMG rod unit systems can be used in water purification to provide microbial free drinking water and serve as an indicator for quantity of water passing through the filter. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Degradation and Stability Elsevier

Poly(hexamethylene guanidine)-poly(ethylene glycol) solid blend for water microbial deactivation

Loading next page...
 
/lp/elsevier/poly-hexamethylene-guanidine-poly-ethylene-glycol-solid-blend-for-mdQ0TZtpOW
Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier Ltd
ISSN
0141-3910
D.O.I.
10.1016/j.polymdegradstab.2016.04.020
Publisher site
See Article on Publisher Site

Abstract

Polyhexamethylene guanidine hydrochloride (PHMG) is a cationic polymeric biocide used in the treatment of contaminated drinking water. This article describes a PHMG controlled release system made from melt blend of PHMG and solid PEG rods. The polymeric blend system gradually dissolves upon contact with running water and release effective and safe doses of PHMG to the passing water. The PEG-PHMG rod units were installed in a water purifier system, and microbial inactivation efficiency was tested according to the WQA certification program against P231/EPA for 250 L, using 25 L of passing water per day with a flow rate of 8–10 min per liter. The released PHMG was analyzed by Raman spectroscopy, and the antimicrobial activity was determined against Escherichia coli and the virus surrogate, MS2. A constant release of 0.35–0.5 ppm PHMG along 250 L of passing water was achieved. Inactivation results exceeded the minimal requirement for bacterial removal of 4–5 log reduction throughout the entire 250L. The rod height correlated with amount of water eroding the rod from bottom surface. Thus, these PEG/PHMG rod unit systems can be used in water purification to provide microbial free drinking water and serve as an indicator for quantity of water passing through the filter.

Journal

Polymer Degradation and StabilityElsevier

Published: Jul 1, 2016

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off