With the urgency and demand for access to safe drinking water still present across the developing world this paper assesses the potential for combining the photocatalytic properties of titanium dioxide (TiO2) doped with silver (Ag) with the ceramic water purifier (CWP), a simple point of use water treatment device developed by Potters for Peace. The aim of the work is to provide a low cost, low energy and low environmental impact water treatment solution, suitable for use in rural and peri-urban Sierra Leone. The ability of TiO2 and colloidal Ag to remove humic substances, ubiquitous organic contaminants (PAHs) and pathogens in solution and as a CWP coating has been investigated under similar conditions to those found in Sierra Leone. This study showed an almost complete removal of Escherichia coli using TiO2, Ag or Ag doped TiO2 coatings (>99%); a high removal (80%) of PAHs in the permeate by CWP coated with Ag doped TiO2, and a removal of 40 and 60% HA in the permeate by CWP coated with Ag and TiO2, respectively.
Skip Nav Destination
Article navigation
Research Article|
March 01 2012
Efficacy of ceramic water purifiers coated with colloidal Ag doped TiO2 against polyaromatic hydrocarbons and pathogens in Sierra Leone Available to Purchase
M. L. Hansen;
1Institute for Materials and Processes, School of Engineering, University of Edinburgh, EH9 3JL, UK
E-mail: [email protected]
Search for other works by this author on:
A. Vieira;
A. Vieira
2Institute for Infrastructure and Environment, School of Engineering, University of Edinburgh, EH9 3JL, UK
Search for other works by this author on:
B. Antizar-Ladislao
B. Antizar-Ladislao
2Institute for Infrastructure and Environment, School of Engineering, University of Edinburgh, EH9 3JL, UK
Search for other works by this author on:
Water Supply (2012) 12 (2): 133–139.
Article history
Received:
August 15 2011
Accepted:
September 20 2011
Citation
M. L. Hansen, A. Vieira, B. Antizar-Ladislao; Efficacy of ceramic water purifiers coated with colloidal Ag doped TiO2 against polyaromatic hydrocarbons and pathogens in Sierra Leone. Water Supply 1 March 2012; 12 (2): 133–139. doi: https://doi.org/10.2166/ws.2012.105
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00