FLUORIDE 30 (2)  1997, p. 128	International Society for Fluoride Research	Table of Contents

A SIMPLE METHOD FOR DEFLUORIDATION OF DRINKING WATER AT
VILLAGE LEVEL BY ADSORPTION ON ANDO SOIL IN KENYA

C Zevenbergen, L P van Reeuwijk, G Frapporti, R J Louws and R D Schuiling
Rotterdam, The Netherlands

Abstract from Science of the Total Environment 188 (2-3) 225-232 1996

In this paper a new and simple defluoridation method is presented using local Kenyan soil derived from volcanic ash (e.g. Ando soils or soils with 'andic' properties) as a fluoride sorbent. The ability of Kenyan Ando soil to adsorb fluoride was determined experimentally. These results were extended to possible technical application using a one dimensional solute transport model. Based on the results it is concluded that the use of Ando soils appears to be an economical and efficient method for defluoridation of drinking water on a small scale in rural areas of Kenya and other regions along the Rift Zone. Further research is warranted to evaluate its practical applications and social acceptance.

Key words: Defluoridation, Kenya.
Reprints: IWACO BV, NL-3009 AM, Rotterdam, The Netherlands.

FLUORIDE 30 (2)  1997, p. 128	International Society for Fluoride Research
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