The idea of decontamination by exposure to sunlight is not, in any way, a novel one. It is a traditional pra­ctice for housewives to keep bed covers, for a short whi­le, in a sunny place, and to expose white clothes to di­rect sunrays, to make them look " whiter "

This idea was grasped by a team of Lebanese resear­chers, who applied this method to disinfect small amounts of drinking water. This very method is adopted, through the present work, to the Egyptian conditions. It is found that contaminated water is perfectly fit for human consumption after being exposed to direct sunrays for a period of three hours. However, the time needed for this process depends on the type of the contai­ner used, its color, wall thickness and transmissivity, as well as on the energy of the solar radiatio·n beams, transmitted, through the container, to the polluted wa­ter. Solar disinfection of drinking water is a very simple and cheap method of acquiring pure water-. It is convenient for application in rural areas of the world, where potable , water is not found.


School of Sciences and Engineering

Date of Award


Online Submission Date


First Advisor


Second Advisor


Committee Member 1

Nabil Goubran

Committee Member 2

F. Assabgy

Committee Member 3


Document Type



146 leaves :

Library of Congress Subject Heading 1

Water purification equipment industry.

Library of Congress Subject Heading 2



The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy.

Call Number

Thesis 1986/697



Included in

Engineering Commons