2026-09-19T21:09:13Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/744082022-01-13T07:54:23Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Susan Murcott.
Miller, Matthew Rhodes
Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering.
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
f-gh---
2012-10-26T18:06:43Z
2012-10-26T18:06:43Z
2012
2012
http://hdl.handle.net/1721.1/74408
812876196
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 76-78).
Pure Home Water (PHW) is a non-profit based in Ghana that seeks to bring safe drinking water to those most in need in Northern Ghana through the production, sale, and distribution of ceramic pot filters (CPF) and other water, sanitation and hygiene innovations. This thesis documents the improvement of the performance of PHW's CPF in three areas; flow rate, bacteria removal, and strength. This thesis also documents the improvement of the PHW filter factory's quality assurance program primarily through the discovery of more efficient quality control measures. Of particular importance is the quality control measure known as the "First Drip Test" which accurately predicts both a CPF's flow rate and bacteria removal effectiveness. Two other tests, the "Bubble Test" and a tortuosity representation, were also found to be accurate quality control measures. In the production of CPFs, it was found that the percentage of combustible by mass, in this case rice husk, is the primary factor in determining both the flow rate characteristics and strength characteristics of the CPF. The flow rate increases linearly as the percentage of combustible used in the CPF composition increases. The strength decreases as the percentage of combustible used increases.
by Matthew Rhodes Miller.
M.Eng.
86 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Civil and Environmental Engineering.
Hemispheric ceramic pot filter evaluation and quality assurance program in Northern Ghana
Ceramic pot filter evaluation and optimization in Northern Ghana
Thesis
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<Abstract>Pure Home Water (PHW) is a non-profit based in Ghana that seeks to bring safe drinking water to those most in need in Northern Ghana through the production, sale, and distribution of ceramic pot filters (CPF) and other water, sanitation and hygiene innovations. This thesis documents the improvement of the performance of PHW's CPF in three areas; flow rate, bacteria removal, and strength. This thesis also documents the improvement of the PHW filter factory's quality assurance program primarily through the discovery of more efficient quality control measures. Of particular importance is the quality control measure known as the "First Drip Test" which accurately predicts both a CPF's flow rate and bacteria removal effectiveness. Two other tests, the "Bubble Test" and a tortuosity representation, were also found to be accurate quality control measures. In the production of CPFs, it was found that the percentage of combustible by mass, in this case rice husk, is the primary factor in determining both the flow rate characteristics and strength characteristics of the CPF. The flow rate increases linearly as the percentage of combustible used in the CPF composition increases. The strength decreases as the percentage of combustible used increases.</Abstract>
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