American Society of Civil Engineers


Ceramic Water Filters Impregnated with Silver Nanoparticles for Point-of-Use Water Treatment: Results of Field Studies in Guatemala and South Africa


by James A. Smith, (Department of Civil and Environmental Engineering, University of Virginia, PO Box 400742, Charlottesville, VA, 22904-4742, USA E-mail: jsmith@virginia.edu), Lydia Abebe, (Department of Civil and Environmental Engineering, University of Virginia, PO Box 400742, Charlottesville, VA, 22904-4742, USA), Vinka Craver, (Department of Civil and Environmental Engineering, University of Rhode Island, Bliss Hall 213, Kingston, RI 02881, USA), Rebecca Dillingham, (Department of Civil and Environmental Engineering, University of Virginia, PO Box 400742, Charlottesville, VA, 22904-4742, USA), Erin Kallman, (Department of Civil and Environmental Engineering, University of Virginia, PO Box 400742, Charlottesville, VA, 22904-4742, USA), Beauty Mashao, (Department of Microbiology, University of Venda, Private Bag X5050, Thohoyandou 0950, South Africa), Sophia Narkiewicz, (Department of Civil and Environmental Engineering, University of Rhode Island, Bliss Hall 213, Kingston, RI 02881, USA), and Amidou Samie, (Department of Microbiology, University of Venda, Private Bag X5050, Thohoyandou 0950, South Africa)
Section: Groundwater Council—8th Symposium on Groundwater Hydrology, Quality, and Management, pp. 806-807, (doi:  http://dx.doi.org/10.1061/41114(371)90)

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Document type: Conference Proceeding Paper
Part of: World Environmental and Water Resources Congress 2010: Challenges of Change
Abstract: This work investigates the efficacy of ceramic filters treated with silver nanoparticles as a point-of-use water treatment intervention in two developing-world communities: San Mateo Ixtatan, Guatemala and Limpopo Province, S. Africa. In San Mateo Ixtatan, filter interventions were designed to evaluate the technological performance and social acceptance of the filter in 60 households. In Limpopo Province, an ongoing intervention is being studied for HIV-positive individuals with the goal of also evaluating health effects of the filters. This latter study recruited 66 individuals with about half receiving filters and the other half serving as a control group. Data for Guatemala show significant social acceptance of the filter and initial coliform bacteria and E. coli removal rates greater than 97%. Early data for the S. Africa study demonstrate a 69% reduction in the number of days of diarrhea per month in patients who received the filters compared to those who did not.


ASCE Subject Headings:
Filters
Water treatment
Guatemala
Latin America