Original Article of Special Reports: Impending Issues on Water Resource in Arid Region and Countermeasures
Fluoride Removal from Groundwater by an Electrolysis System
2017 Volume 27 Issue 1 Pages 41-47
Details
2017 Volume 27 Issue 1 Pages 41-47
Fluoride concentrations in well water in Sri Lanka and Tunisia were measured with the intention to elucidate the adverse effect of excess intake of fluoride on human health. According to the survey, dental fluorosis was found to be prevalent in both of the countries. An electrolysis system, in which fluoride is removed by a co-precipitation with magnesium hydroxide in the cathode bath, was proposed in the current study. High concentration of magnesium generally contained in the well water of Sri Lanka and Tunisia enables the electrolysis system to remove fluoride without any additional chemicals. In addition, chlorine generated by the electrolysis in the anode bath can be used as a disinfectant. A pilot scale plant installed at Anuradhapura in Sri Lanka, which was operated with a flow rate of 120L/day, proved that 67% of fluoride was removed from the well water.
