Comparison of a Native Clay Soil and an Engineered Clay used in Experimental Ceramic Pot Filter Fabrication
Ceramic pot filters (CPFs) have been shown to be an effective means of household water treatment in the developing world. The filters are typically made using local labor and locally available materials including clay soils and various burn out materials used to create porosity. Artisanal approaches may be used to manufacture the filters, and there have been efforts to improve CPF performance through laboratory studies. The importation of soil to make the filters may be highly regulated and could be cost prohibitive, so some researchers use commercially available clay to fabricate experimental filters. However, such efforts typically do not include a comparison of the engineered clay to native clay soil, nor do most studies compare the performance of experimental CPFs fabricated from engineered clay to CPFs made from native clay. This study compares mineralogical and geotechnical properties of a clay soil from Rabinal, Guatemala, used to produce CPFs in that country to an engineered clay developed for use in laboratory experiments. Flowrate is the primary quality control parameter used in CPF production, and performance testing indicated that experimental CPF flowrates were not necessarily a function of clay composition. However, engineered clay could be used as a surrogate for native soil with some limitations.
L. A. Hubbel et al., "Comparison of a Native Clay Soil and an Engineered Clay used in Experimental Ceramic Pot Filter Fabrication," Water Science and Technology: Water Supply, vol. 15, no. 3, pp. 569-577, IWA Publishing, Jun 2015.
The definitive version is available at https://doi.org/10.2166/ws.2015.007
Geosciences and Geological and Petroleum Engineering
Materials Science and Engineering
Keywords and Phrases
Ceramic pot filters; Clay; Drinking water; Flowrate; Guatemala; Ceramic materials; Developing countries; Flow rate; Potable water; Soils; Water treatment; Control parameters; Cost prohibitive; Geotechnical properties; In-laboratory experiments; Laboratory studies; Performance testing; biofiltration
International Standard Serial Number (ISSN)
Article - Journal
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